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block mutation of read-only array in series #14359

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block mutation of read-only array in series #14359

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llllllllll
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  • tests added / passed
  • passes git diff upstream/master | flake8 --diff
  • whatsnew entry

reproduction case:

In [1]: array = np.array([1, 2, 3])

In [2]: array.flags.writeable = False

In [3]: series = pd.Series(array)

In [4]: series[0] = -1

In [5]: series
Out[5]: 
0   -1
1    2
2    3
dtype: int64

In [6]: array
Out[6]: array([-1,  2,  3])

In the case I was running into I was passing a numpy.memmap which is a subclass of ndarray but was over a read only memory segment so attempting the setitem was causing a segfault. The new behavior matches the numpy behavior:

In [4]: series[0] = -1
---------------------------------------------------------------------------
ValueError                                Traceback (most recent call last)
<ipython-input-5-2ad0997d5cf2> in <module>()
----> 1 series[0] = -1
   ...
ValueError: assignment destination is read-only

In [5]: array[0] = -1
---------------------------------------------------------------------------
ValueError                                Traceback (most recent call last)
<ipython-input-7-f67d1d011a13> in <module>()
----> 1 array[0] = -1

ValueError: assignment destination is read-only

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regarding the travis failure: do you cache the compilation accross the runs? I noticed that I needed to ensure that the .so and .c was removed because for some reason the .pyd was not treated as a dependency that required recompilation.

@chris-b1
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chris-b1 commented Oct 6, 2016 •
edited
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Here's the PR where caching was added/modified
#13526

I don't really know how it works, but it doesn't seem to check .pxd files which would explain your issue.

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chris-b1 commented Oct 6, 2016

Working on this in #14363

jreback
jreback reviewed Oct 6, 2016
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doc/source/whatsnew/v0.20.0.txt
@@ -79,3 +79,6 @@ Performance Improvements

Bug Fixes
~~~~~~~~~

- Bug in ``Series.__setitem__`` which allowed mutating arrays read-only arrays
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move to 0.19.1

@chris-b1 chris-b1 mentioned this pull request Oct 6, 2016
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jreback
jreback reviewed Oct 6, 2016
View reviewed changes
pandas/src/util.pxd
@@ -59,6 +59,10 @@ cdef inline object get_value_at(ndarray arr, object loc):
cdef inline set_value_at(ndarray arr, object loc, object value):
cdef:
Py_ssize_t i, sz

if not cnp.PyArray_ISWRITEABLE(arr):
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I think this needs to be in the dependency chain in setup.py (for all cython extesnsion, though you could make more fine-grained if you want)

jreback
jreback reviewed Oct 6, 2016
View reviewed changes
pandas/src/util.pxd
@@ -59,6 +59,10 @@ cdef inline object get_value_at(ndarray arr, object loc):
cdef inline set_value_at(ndarray arr, object loc, object value):
cdef:
Py_ssize_t i, sz

if not cnp.PyArray_ISWRITEABLE(arr):
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This might actuallly be a performance hit. This routines is called in a lot of places. can you do some simple tests.

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I might put this at a higher level with a single check per-array (and not on an individual set, even though that is technically more correct).

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Sure, I will profile this to see. There is a lot of python code happening in __setitem__ so I think that will drown the hit here. This is just a macro that does a bitwise and on the flags so the real cost is dereferencing the array, but we need to do that later in the function anyways.

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It looks like this may actually be slowing things down slightly. I will see if I can make up that time somewhere else. If we cache at a per-array level then what should be do if someone changes the flags on the underlying array between setitem calls?

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Okay, I profiled __setitem__ to see if I could make back the time I was adding to the write, I think I have come up with something reasonable here. My changes remove a getattr and a builtin lookup which were measurable amounts of the call times. I confimed that with cProfile and line_profile and tested my changes with perf.

master

........................................
Metadata:
- aslr: Full randomization
- boot_time: 2016-10-03T11:28:53
- cpu_config: 0-3=driver:intel_pstate, intel_pstate:turbo, governor:powersave; idle:intel_idle
- cpu_count: 4
- cpu_model_name: Intel(R) Core(TM) i7-5600U CPU @ 2.60GHz
- hostname: funami
- loops: 2^15
- name: timeit
- perf_version: 0.7.12
- platform: Linux-4.7.5-1-ARCH-x86_64-with-arch
- python_cflags: -Wno-unused-result -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes
- python_executable: /home/yui/.virtualenvs/databazaar/bin/python
- python_implementation: cpython
- python_version: 3.4.3 (64-bit) revision b4cbecbc0781
- timeit_setup: 'import pandas as pd;s = pd.Series([1, 2, 3])'
- timeit_stmt: 's[0] = 1'
- timer: clock_gettime(CLOCK_MONOTONIC), resolution: 1.00 ns

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Run 14: warmup (20): 4.42 us (+6%), 4.45 us (+7%), 4.49 us (+8%), 4.47 us (+7%), 4.40 us (+6%), 4.46 us (+7%), 4.47 us (+7%), 4.45 us (+7%), 4.43 us (+7%), 4.41 us (+6%), 4.45 us (+7%), 4.47 us (+7%), 4.40 us (+6%), 4.43 us (+6%), 4.42 us (+6%), 4.49 us (+8%), 4.44 us (+7%), 4.40 us (+6%), 4.40 us (+6%), 4.37 us (+5%); samples (50): 4.38 us (+5%), 4.40 us (+6%), 4.34 us, 4.31 us, 4.41 us (+6%), 4.32 us, 4.41 us (+6%), 4.31 us, 4.29 us, 4.34 us, 4.37 us (+5%), 4.30 us, 4.30 us, 4.42 us (+6%), 4.42 us (+6%), 4.37 us (+5%), 4.41 us (+6%), 4.43 us (+6%), 4.38 us (+5%), 4.41 us (+6%), 4.43 us (+6%), 4.48 us (+8%), 4.45 us (+7%), 4.45 us (+7%), 4.47 us (+7%), 4.45 us (+7%), 4.37 us (+5%), 5.25 us (+26%), 5.45 us (+31%), 4.43 us (+6%), 4.54 us (+9%), 4.63 us (+11%), 4.38 us (+5%), 4.42 us (+6%), 4.43 us (+7%), 4.42 us (+6%), 4.44 us (+7%), 4.40 us (+6%), 4.41 us (+6%), 4.54 us (+9%), 4.42 us (+6%), 4.35 us, 4.42 us (+6%), 4.52 us (+9%), 4.46 us (+7%), 4.43 us (+7%), 4.44 us (+7%), 4.97 us (+19%), 4.43 us (+6%), 4.29 us
Run 15: warmup (20): 4.24 us, 4.25 us, 4.18 us, 4.22 us, 4.17 us, 4.25 us, 4.21 us, 4.30 us, 4.30 us, 4.29 us, 4.24 us, 4.40 us (+6%), 4.23 us, 4.28 us, 4.32 us, 4.28 us, 4.40 us (+6%), 4.30 us, 4.38 us (+5%), 4.27 us; samples (50): 4.29 us, 4.26 us, 4.30 us, 4.33 us, 4.24 us, 4.25 us, 4.26 us, 4.29 us, 4.29 us, 4.29 us, 4.38 us (+5%), 4.32 us, 4.32 us, 4.38 us (+5%), 4.28 us, 4.26 us, 4.30 us, 4.22 us, 4.26 us, 4.35 us, 4.28 us, 4.23 us, 4.23 us, 4.22 us, 4.27 us, 4.31 us, 4.25 us, 4.28 us, 4.27 us, 4.31 us, 4.30 us, 4.32 us, 4.28 us, 4.20 us, 4.26 us, 4.30 us, 4.20 us, 4.21 us, 4.19 us, 4.21 us, 4.24 us, 4.19 us, 4.26 us, 4.29 us, 4.25 us, 4.33 us, 4.28 us, 4.31 us, 4.41 us (+6%), 4.29 us
Run 16: warmup (20): 4.01 us, 4.10 us, 4.08 us, 4.07 us, 4.09 us, 4.09 us, 4.05 us, 4.13 us, 4.07 us, 4.06 us, 4.06 us, 4.00 us, 4.08 us, 4.10 us, 4.06 us, 4.08 us, 4.07 us, 4.24 us, 4.10 us, 4.08 us; samples (50): 4.06 us, 4.11 us, 4.08 us, 4.06 us, 4.08 us, 4.18 us, 4.15 us, 4.01 us, 4.05 us, 4.04 us, 4.05 us, 4.07 us, 4.05 us, 4.07 us, 4.12 us, 4.10 us, 4.06 us, 4.12 us, 4.05 us, 4.02 us, 4.05 us, 4.02 us, 4.09 us, 4.12 us, 4.17 us, 4.15 us, 4.17 us, 4.18 us, 4.23 us, 4.20 us, 4.16 us, 4.10 us, 4.10 us, 4.10 us, 4.21 us, 4.10 us, 4.11 us, 4.00 us, 3.98 us, 4.04 us, 3.98 us, 4.00 us, 4.10 us, 4.14 us, 4.05 us, 4.02 us, 4.00 us, 3.99 us, 3.97 us, 4.05 us
Run 17: warmup (20): 3.96 us, 4.08 us, 4.13 us, 4.13 us, 4.08 us, 4.13 us, 4.18 us, 4.12 us, 4.07 us, 4.13 us, 4.09 us, 4.19 us, 4.10 us, 4.13 us, 4.12 us, 4.10 us, 4.09 us, 4.09 us, 4.02 us, 4.03 us; samples (50): 4.05 us, 4.09 us, 4.06 us, 4.09 us, 4.10 us, 4.11 us, 4.15 us, 4.31 us, 4.14 us, 4.08 us, 4.07 us, 4.08 us, 4.41 us (+6%), 4.84 us (+16%), 4.92 us (+18%), 4.99 us (+20%), 4.07 us, 4.09 us, 4.06 us, 4.30 us, 4.98 us (+20%), 4.56 us (+10%), 4.21 us, 4.07 us, 4.04 us, 4.24 us, 6.99 us (+68%), 5.76 us (+38%), 5.55 us (+33%), 5.10 us (+22%), 5.21 us (+25%), 5.33 us (+28%), 5.16 us (+24%), 5.52 us (+33%), 6.22 us (+49%), 5.94 us (+43%), 5.71 us (+37%), 5.18 us (+24%), 5.26 us (+26%), 5.28 us (+27%), 5.17 us (+24%), 5.45 us (+31%), 5.23 us (+26%), 4.97 us (+19%), 5.39 us (+30%), 5.30 us (+27%), 5.15 us (+24%), 5.27 us (+27%), 5.44 us (+31%), 5.55 us (+33%)
Run 18: warmup (20): 5.94 us (+43%), 5.10 us (+23%), 5.29 us (+27%), 6.49 us (+56%), 5.07 us (+22%), 5.17 us (+24%), 5.20 us (+25%), 4.98 us (+20%), 4.63 us (+11%), 4.22 us, 4.24 us, 4.20 us, 4.21 us, 4.21 us, 4.21 us, 4.20 us, 4.20 us, 4.21 us, 4.19 us, 4.20 us; samples (50): 4.42 us (+6%), 5.17 us (+24%), 4.26 us, 4.19 us, 4.21 us, 4.22 us, 4.16 us, 4.17 us, 4.18 us, 4.18 us, 4.22 us, 4.21 us, 4.17 us, 4.19 us, 4.20 us, 4.15 us, 4.06 us, 4.19 us, 4.21 us, 4.21 us, 4.19 us, 4.19 us, 4.18 us, 4.17 us, 4.20 us, 4.19 us, 4.17 us, 4.25 us, 4.23 us, 4.97 us (+19%), 5.33 us (+28%), 4.20 us, 4.20 us, 4.21 us, 4.19 us, 4.19 us, 4.20 us, 4.19 us, 4.12 us, 4.20 us, 4.11 us, 4.22 us, 4.26 us, 4.20 us, 4.20 us, 4.16 us, 4.15 us, 4.14 us, 4.12 us, 4.15 us
Run 19: warmup (20): 3.95 us (-5%), 5.68 us (+36%), 4.10 us, 4.24 us, 3.99 us, 3.95 us, 3.97 us, 4.02 us, 3.98 us, 3.92 us (-6%), 3.96 us, 3.96 us, 3.93 us (-6%), 3.93 us (-5%), 3.92 us (-6%), 3.95 us (-5%), 3.96 us, 3.95 us (-5%), 3.91 us (-6%), 3.91 us (-6%); samples (50): 3.92 us (-6%), 3.90 us (-6%), 3.89 us (-6%), 3.88 us (-7%), 3.88 us (-7%), 3.91 us (-6%), 3.89 us (-6%), 3.90 us (-6%), 4.98 us (+20%), 3.97 us, 3.98 us, 3.92 us (-6%), 3.90 us (-6%), 3.90 us (-6%), 3.93 us (-6%), 3.99 us, 3.95 us (-5%), 4.18 us, 3.93 us (-5%), 4.43 us (+6%), 4.70 us (+13%), 4.24 us, 4.22 us, 4.29 us, 4.24 us, 4.26 us, 4.27 us, 4.02 us, 4.30 us, 4.07 us, 3.96 us, 4.13 us, 4.94 us (+19%), 4.33 us, 4.01 us, 4.00 us, 4.19 us, 4.58 us (+10%), 4.05 us, 4.00 us, 4.00 us, 3.96 us, 4.10 us, 4.10 us, 4.08 us, 4.14 us, 4.01 us, 4.62 us (+11%), 4.10 us, 4.12 us
Run 20: warmup (20): 5.35 us (+29%), 4.13 us, 4.78 us (+15%), 4.23 us, 4.19 us, 4.60 us (+11%), 4.22 us, 4.28 us, 4.09 us, 3.98 us, 3.94 us (-5%), 3.94 us (-5%), 3.95 us (-5%), 3.97 us, 3.95 us (-5%), 3.98 us, 3.94 us (-5%), 3.96 us, 4.00 us, 3.94 us (-5%); samples (50): 3.97 us, 3.95 us (-5%), 3.94 us (-5%), 3.98 us, 3.93 us (-5%), 4.00 us, 4.09 us, 3.93 us (-6%), 3.91 us (-6%), 3.96 us, 3.94 us (-5%), 3.93 us (-6%), 5.96 us (+43%), 5.13 us (+23%), 3.92 us (-6%), 3.95 us (-5%), 3.97 us, 4.00 us, 3.95 us (-5%), 4.00 us, 3.97 us, 3.98 us, 3.93 us (-5%), 3.98 us, 3.96 us, 3.97 us, 4.01 us, 3.99 us, 3.97 us, 3.98 us, 3.91 us (-6%), 3.87 us (-7%), 3.87 us (-7%), 3.89 us (-7%), 3.87 us (-7%), 3.88 us (-7%), 3.97 us, 3.91 us (-6%), 3.89 us (-7%), 3.88 us (-7%), 3.88 us (-7%), 3.87 us (-7%), 5.58 us (+34%), 5.65 us (+36%), 3.86 us (-7%), 3.93 us (-6%), 3.89 us (-6%), 3.87 us (-7%), 3.87 us (-7%), 3.90 us (-6%)
Run 21: warmup (20): 4.02 us, 4.12 us, 4.11 us, 4.09 us, 4.06 us, 4.10 us, 4.08 us, 4.05 us, 4.01 us, 4.04 us, 4.07 us, 4.13 us, 4.08 us, 4.16 us, 4.09 us, 4.07 us, 4.09 us, 4.10 us, 4.08 us, 4.07 us; samples (50): 4.06 us, 4.10 us, 4.12 us, 4.10 us, 4.13 us, 4.15 us, 4.12 us, 4.12 us, 4.36 us, 4.69 us (+13%), 4.35 us, 4.08 us, 4.44 us (+7%), 4.15 us, 4.06 us, 4.04 us, 4.09 us, 4.09 us, 4.29 us, 4.09 us, 4.06 us, 4.08 us, 4.09 us, 4.08 us, 4.10 us, 4.11 us, 4.07 us, 4.06 us, 4.05 us, 4.05 us, 4.11 us, 4.12 us, 4.03 us, 4.03 us, 4.07 us, 4.10 us, 4.02 us, 4.05 us, 4.00 us, 4.00 us, 4.00 us, 4.00 us, 4.02 us, 4.02 us, 3.99 us, 4.01 us, 4.07 us, 4.04 us, 4.03 us, 3.98 us
Run 22: warmup (20): 4.09 us, 4.13 us, 4.12 us, 4.60 us (+10%), 4.77 us (+15%), 5.14 us (+23%), 4.78 us (+15%), 4.96 us (+19%), 5.02 us (+21%), 5.42 us (+30%), 4.65 us (+12%), 4.70 us (+13%), 4.73 us (+14%), 4.10 us, 4.18 us, 4.08 us, 4.15 us, 4.52 us (+9%), 4.15 us, 4.52 us (+9%); samples (50): 4.08 us, 4.45 us (+7%), 4.12 us, 4.08 us, 4.23 us, 4.17 us, 4.10 us, 4.32 us, 4.15 us, 4.10 us, 4.09 us, 4.12 us, 4.12 us, 4.09 us, 4.12 us, 4.14 us, 4.11 us, 4.10 us, 4.15 us, 4.09 us, 4.12 us, 4.13 us, 4.10 us, 4.10 us, 4.10 us, 4.14 us, 4.07 us, 4.12 us, 4.09 us, 4.14 us, 4.13 us, 4.12 us, 4.10 us, 4.13 us, 4.12 us, 4.09 us, 4.11 us, 4.10 us, 4.09 us, 4.08 us, 4.05 us, 4.06 us, 4.08 us, 4.10 us, 4.09 us, 4.13 us, 4.05 us, 4.08 us, 4.09 us, 4.08 us
Run 23: warmup (20): 4.08 us, 4.11 us, 4.20 us, 4.15 us, 4.36 us, 4.33 us, 4.21 us, 4.07 us, 4.07 us, 4.07 us, 4.10 us, 4.12 us, 4.06 us, 4.17 us, 4.12 us, 4.09 us, 4.11 us, 4.02 us, 4.00 us, 4.01 us; samples (50): 3.99 us, 4.07 us, 4.01 us, 4.02 us, 4.06 us, 4.01 us, 4.06 us, 4.06 us, 4.16 us, 4.15 us, 4.12 us, 4.05 us, 4.05 us, 4.11 us, 4.17 us, 4.24 us, 4.14 us, 4.11 us, 4.11 us, 4.07 us, 4.10 us, 4.10 us, 4.08 us, 4.10 us, 4.12 us, 4.09 us, 4.08 us, 4.07 us, 4.09 us, 4.06 us, 4.08 us, 4.10 us, 4.11 us, 4.10 us, 4.14 us, 4.06 us, 4.12 us, 4.06 us, 4.03 us, 4.08 us, 4.06 us, 4.07 us, 4.10 us, 4.06 us, 4.09 us, 4.11 us, 4.08 us, 4.09 us, 4.10 us, 4.06 us
Run 24: warmup (20): 4.14 us, 4.13 us, 4.23 us, 4.15 us, 4.17 us, 4.20 us, 4.21 us, 4.17 us, 4.17 us, 4.25 us, 4.21 us, 4.71 us (+13%), 5.30 us (+27%), 5.08 us (+22%), 5.15 us (+24%), 6.00 us (+44%), 5.31 us (+28%), 4.85 us (+16%), 5.92 us (+42%), 6.52 us (+57%); samples (50): 5.60 us (+35%), 4.90 us (+18%), 5.00 us (+20%), 5.43 us (+31%), 5.86 us (+41%), 5.12 us (+23%), 4.95 us (+19%), 5.08 us (+22%), 4.97 us (+19%), 5.10 us (+23%), 5.34 us (+28%), 5.39 us (+30%), 6.41 us (+54%), 5.16 us (+24%), 5.29 us (+27%), 5.56 us (+34%), 4.37 us, 4.33 us, 4.32 us, 4.34 us, 4.34 us, 4.36 us, 4.97 us (+19%), 4.46 us (+7%), 4.33 us, 4.36 us, 4.39 us (+5%), 4.33 us, 4.91 us (+18%), 4.33 us, 4.28 us, 4.18 us, 4.21 us, 4.35 us, 4.25 us, 4.45 us (+7%), 4.16 us, 4.17 us, 4.17 us, 4.19 us, 4.19 us, 4.16 us, 4.15 us, 4.24 us, 4.24 us, 4.18 us, 4.24 us, 4.13 us, 4.28 us, 4.18 us
Run 25: warmup (20): 4.09 us, 4.14 us, 4.10 us, 4.11 us, 4.13 us, 4.12 us, 4.10 us, 4.10 us, 4.12 us, 4.08 us, 4.08 us, 4.10 us, 4.12 us, 4.09 us, 4.13 us, 4.11 us, 4.08 us, 4.09 us, 4.05 us, 4.08 us; samples (50): 4.10 us, 4.07 us, 4.11 us, 4.10 us, 4.12 us, 4.11 us, 4.11 us, 4.15 us, 4.07 us, 4.10 us, 4.08 us, 4.08 us, 4.05 us, 4.05 us, 4.06 us, 4.09 us, 4.12 us, 4.11 us, 4.10 us, 4.12 us, 4.11 us, 4.10 us, 4.13 us, 4.69 us (+13%), 6.03 us (+45%), 4.66 us (+12%), 4.16 us, 4.14 us, 4.12 us, 4.13 us, 4.10 us, 4.12 us, 4.09 us, 4.08 us, 4.09 us, 4.11 us, 5.98 us (+44%), 6.57 us (+58%), 5.00 us (+20%), 4.15 us, 4.08 us, 4.12 us, 4.13 us, 4.14 us, 4.13 us, 4.09 us, 4.06 us, 4.08 us, 4.08 us, 4.10 us
Run 26: warmup (20): 4.19 us, 4.23 us, 4.22 us, 4.23 us, 4.24 us, 4.21 us, 4.41 us (+6%), 4.49 us (+8%), 4.21 us, 4.23 us, 4.26 us, 4.24 us, 4.19 us, 4.25 us, 4.19 us, 4.22 us, 4.18 us, 4.25 us, 4.17 us, 4.13 us; samples (50): 4.15 us, 4.17 us, 4.14 us, 4.22 us, 4.15 us, 4.21 us, 4.17 us, 4.20 us, 4.22 us, 4.19 us, 4.17 us, 4.17 us, 4.15 us, 4.24 us, 4.20 us, 4.20 us, 4.18 us, 4.24 us, 4.18 us, 4.25 us, 5.86 us (+41%), 6.70 us (+61%), 5.53 us (+33%), 4.16 us, 4.19 us, 4.19 us, 4.19 us, 4.24 us, 4.17 us, 4.18 us, 4.18 us, 4.25 us, 4.21 us, 4.22 us, 4.21 us, 4.16 us, 4.19 us, 4.16 us, 4.17 us, 4.12 us, 4.15 us, 4.18 us, 4.18 us, 4.18 us, 4.23 us, 4.16 us, 4.29 us, 4.16 us, 4.20 us, 4.20 us
Run 27: warmup (20): 4.53 us (+9%), 4.38 us (+5%), 4.21 us, 4.22 us, 4.10 us, 4.09 us, 4.12 us, 4.07 us, 4.12 us, 4.09 us, 4.09 us, 4.43 us (+6%), 4.44 us (+7%), 4.15 us, 4.17 us, 4.15 us, 4.12 us, 4.35 us, 4.51 us (+8%), 4.32 us; samples (50): 4.12 us, 4.09 us, 4.19 us, 4.25 us, 4.13 us, 4.15 us, 4.17 us, 4.18 us, 4.16 us, 4.16 us, 4.16 us, 4.35 us, 4.24 us, 4.90 us (+18%), 4.15 us, 4.16 us, 4.10 us, 4.21 us, 5.43 us (+31%), 6.56 us (+58%), 4.56 us (+9%), 4.16 us, 4.15 us, 4.19 us, 4.14 us, 4.14 us, 4.10 us, 4.17 us, 4.15 us, 4.22 us, 4.26 us, 4.21 us, 6.23 us (+50%), 6.26 us (+50%), 4.14 us, 4.26 us, 4.18 us, 4.17 us, 4.13 us, 4.08 us, 4.06 us, 4.06 us, 4.09 us, 4.02 us, 4.13 us, 4.11 us, 4.11 us, 4.12 us, 4.09 us, 4.07 us
Run 28: warmup (20): 4.18 us, 4.21 us, 4.23 us, 4.25 us, 4.42 us (+6%), 4.29 us, 4.30 us, 4.26 us, 4.30 us, 4.31 us, 4.30 us, 4.25 us, 4.20 us, 4.19 us, 4.19 us, 4.21 us, 4.42 us (+6%), 4.22 us, 4.53 us (+9%), 4.16 us; samples (50): 4.22 us, 4.19 us, 4.18 us, 4.17 us, 4.24 us, 4.83 us (+16%), 4.47 us (+7%), 4.18 us, 4.18 us, 4.22 us, 4.22 us, 4.14 us, 4.65 us (+12%), 4.16 us, 4.18 us, 4.17 us, 4.18 us, 4.15 us, 4.17 us, 4.17 us, 4.16 us, 4.16 us, 4.16 us, 4.17 us, 4.13 us, 4.21 us, 4.16 us, 4.24 us, 4.10 us, 4.71 us (+13%), 4.94 us (+19%), 4.33 us, 4.26 us, 4.32 us, 4.16 us, 4.10 us, 4.18 us, 4.28 us, 4.15 us, 4.12 us, 4.15 us, 4.12 us, 4.10 us, 4.16 us, 4.28 us, 4.26 us, 4.15 us, 4.12 us, 4.47 us (+7%), 4.69 us (+13%)
Run 29: warmup (20): 4.05 us, 4.11 us, 4.05 us, 4.02 us, 4.01 us, 4.00 us, 4.05 us, 4.07 us, 4.07 us, 4.07 us, 4.23 us, 4.04 us, 4.03 us, 4.06 us, 4.07 us, 4.09 us, 4.04 us, 4.05 us, 4.08 us, 4.05 us; samples (50): 4.05 us, 4.01 us, 4.06 us, 4.06 us, 4.06 us, 4.05 us, 4.04 us, 4.06 us, 4.03 us, 4.08 us, 4.04 us, 4.05 us, 4.05 us, 4.00 us, 4.07 us, 4.01 us, 4.00 us, 3.97 us, 4.04 us, 3.97 us, 3.97 us, 3.94 us (-5%), 4.16 us, 4.26 us, 4.17 us, 3.99 us, 4.03 us, 4.11 us, 4.10 us, 4.10 us, 4.18 us, 4.06 us, 4.02 us, 4.03 us, 4.04 us, 4.04 us, 3.95 us (-5%), 3.94 us (-5%), 3.95 us (-5%), 3.94 us (-5%), 3.98 us, 3.94 us (-5%), 3.94 us (-5%), 3.97 us, 4.01 us, 3.94 us (-5%), 4.00 us, 4.03 us, 3.98 us, 4.00 us
Run 30: warmup (20): 4.16 us, 4.20 us, 4.16 us, 4.26 us, 4.15 us, 4.16 us, 4.20 us, 4.27 us, 4.15 us, 4.20 us, 4.15 us, 4.16 us, 4.12 us, 4.14 us, 4.24 us, 4.26 us, 4.20 us, 4.30 us, 4.96 us (+19%), 4.41 us (+6%); samples (50): 4.23 us, 4.16 us, 4.21 us, 4.25 us, 4.32 us, 5.44 us (+31%), 5.21 us (+25%), 5.07 us (+22%), 7.74 us (+86%), 4.20 us, 4.16 us, 4.24 us, 4.22 us, 4.27 us, 4.16 us, 4.18 us, 4.14 us, 4.10 us, 4.09 us, 4.18 us, 4.19 us, 4.23 us, 4.17 us, 4.77 us (+15%), 5.01 us (+20%), 7.23 us (+74%), 5.17 us (+24%), 4.98 us (+20%), 5.61 us (+35%), 6.96 us (+67%), 6.23 us (+50%), 5.05 us (+21%), 5.18 us (+25%), 5.10 us (+23%), 6.35 us (+53%), 5.06 us (+22%), 5.23 us (+26%), 5.07 us (+22%), 5.07 us (+22%), 5.32 us (+28%), 5.12 us (+23%), 5.26 us (+26%), 5.17 us (+24%), 6.21 us (+49%), 5.41 us (+30%), 5.07 us (+22%), 6.64 us (+60%), 6.62 us (+59%), 5.30 us (+27%), 5.25 us (+26%)
Run 31: warmup (20): 5.82 us (+40%), 5.96 us (+43%), 5.49 us (+32%), 5.65 us (+36%), 5.76 us (+38%), 4.75 us (+14%), 4.46 us (+7%), 4.41 us (+6%), 4.37 us, 4.37 us (+5%), 4.41 us (+6%), 4.39 us (+6%), 4.40 us (+6%), 4.42 us (+6%), 4.35 us, 4.42 us (+6%), 4.35 us, 4.34 us, 4.29 us, 4.47 us (+7%); samples (50): 4.29 us, 4.31 us, 4.39 us (+5%), 4.92 us (+18%), 4.53 us (+9%), 4.41 us (+6%), 4.37 us (+5%), 4.44 us (+7%), 4.46 us (+7%), 4.71 us (+13%), 4.97 us (+19%), 4.39 us (+6%), 4.31 us, 4.31 us, 4.25 us, 4.28 us, 5.03 us (+21%), 4.39 us (+5%), 4.27 us, 4.34 us, 4.32 us, 4.32 us, 4.51 us (+8%), 4.45 us (+7%), 5.08 us (+22%), 4.71 us (+13%), 4.64 us (+11%), 4.32 us, 4.36 us, 8.54 us (+105%), 8.24 us (+98%), 6.47 us (+55%), 4.90 us (+18%), 4.53 us (+9%), 4.50 us (+8%), 4.32 us, 4.47 us (+7%), 4.35 us, 4.43 us (+6%), 5.37 us (+29%), 4.61 us (+11%), 4.38 us (+5%), 4.32 us, 5.23 us (+26%), 5.66 us (+36%), 7.15 us (+72%), 9.15 us (+120%), 5.28 us (+27%), 8.12 us (+95%), 8.83 us (+112%)
Run 32: warmup (20): 5.00 us (+20%), 4.65 us (+12%), 4.31 us, 4.30 us, 5.78 us (+39%), 4.48 us (+8%), 4.74 us (+14%), 4.84 us (+16%), 4.42 us (+6%), 4.66 us (+12%), 4.33 us, 4.24 us, 4.17 us, 4.24 us, 6.27 us (+51%), 5.14 us (+24%), 4.96 us (+19%), 4.65 us (+12%), 5.72 us (+37%), 5.40 us (+30%); samples (50): 5.17 us (+24%), 8.48 us (+104%), 8.12 us (+95%), 4.50 us (+8%), 4.34 us, 4.16 us, 4.18 us, 4.13 us, 4.21 us, 4.20 us, 4.16 us, 4.24 us, 4.16 us, 4.21 us, 4.23 us, 4.15 us, 4.20 us, 4.25 us, 4.18 us, 4.24 us, 4.17 us, 4.28 us, 4.18 us, 4.21 us, 4.25 us, 4.23 us, 4.18 us, 4.34 us, 4.27 us, 4.32 us, 4.15 us, 4.19 us, 4.14 us, 4.18 us, 4.14 us, 4.16 us, 4.21 us, 4.15 us, 4.15 us, 4.18 us, 4.17 us, 4.18 us, 4.08 us, 4.91 us (+18%), 6.70 us (+61%), 5.54 us (+33%), 4.15 us, 4.11 us, 4.15 us, 4.14 us
Run 33: warmup (20): 4.85 us (+17%), 4.83 us (+16%), 4.88 us (+17%), 4.98 us (+20%), 4.94 us (+19%), 4.79 us (+15%), 4.87 us (+17%), 4.78 us (+15%), 4.73 us (+14%), 5.14 us (+23%), 4.82 us (+16%), 4.79 us (+15%), 4.76 us (+14%), 4.77 us (+15%), 4.84 us (+16%), 4.76 us (+14%), 4.67 us (+12%), 4.78 us (+15%), 4.82 us (+16%), 4.86 us (+17%); samples (50): 4.81 us (+16%), 4.85 us (+17%), 4.90 us (+18%), 4.86 us (+17%), 4.91 us (+18%), 5.03 us (+21%), 5.07 us (+22%), 4.74 us (+14%), 4.76 us (+14%), 4.85 us (+16%), 4.73 us (+14%), 4.76 us (+14%), 4.70 us (+13%), 4.79 us (+15%), 4.72 us (+14%), 4.69 us (+13%), 4.71 us (+13%), 4.72 us (+13%), 4.73 us (+14%), 4.68 us (+12%), 4.74 us (+14%), 4.76 us (+14%), 4.76 us (+14%), 4.71 us (+13%), 4.73 us (+14%), 4.73 us (+14%), 4.73 us (+14%), 4.70 us (+13%), 4.68 us (+12%), 4.68 us (+12%), 4.91 us (+18%), 4.88 us (+17%), 4.76 us (+14%), 4.73 us (+14%), 4.70 us (+13%), 4.70 us (+13%), 5.08 us (+22%), 4.69 us (+13%), 4.69 us (+13%), 4.67 us (+12%), 4.65 us (+12%), 4.68 us (+13%), 4.66 us (+12%), 4.72 us (+13%), 4.96 us (+19%), 4.66 us (+12%), 4.71 us (+13%), 4.77 us (+15%), 4.78 us (+15%), 4.71 us (+13%)
Run 34: warmup (20): 4.78 us (+15%), 4.94 us (+19%), 4.85 us (+17%), 4.79 us (+15%), 5.00 us (+20%), 4.84 us (+16%), 5.25 us (+26%), 5.12 us (+23%), 4.86 us (+17%), 4.93 us (+18%), 4.91 us (+18%), 4.80 us (+15%), 4.85 us (+17%), 4.94 us (+19%), 4.75 us (+14%), 4.79 us (+15%), 4.72 us (+13%), 4.73 us (+14%), 4.72 us (+13%), 4.69 us (+13%); samples (50): 4.70 us (+13%), 4.83 us (+16%), 4.67 us (+12%), 4.68 us (+13%), 4.77 us (+15%), 5.28 us (+27%), 5.01 us (+20%), 4.70 us (+13%), 4.69 us (+13%), 4.75 us (+14%), 4.68 us (+12%), 4.73 us (+14%), 4.71 us (+13%), 4.68 us (+12%), 4.70 us (+13%), 4.80 us (+15%), 4.71 us (+13%), 4.73 us (+14%), 4.74 us (+14%), 4.65 us (+12%), 4.72 us (+14%), 4.72 us (+13%), 4.77 us (+15%), 4.75 us (+14%), 4.83 us (+16%), 4.71 us (+13%), 4.78 us (+15%), 4.69 us (+13%), 4.76 us (+14%), 4.76 us (+14%), 4.75 us (+14%), 4.84 us (+16%), 4.78 us (+15%), 4.73 us (+14%), 4.74 us (+14%), 4.72 us (+14%), 4.78 us (+15%), 4.70 us (+13%), 4.72 us (+13%), 4.70 us (+13%), 4.75 us (+14%), 4.72 us (+13%), 4.75 us (+14%), 4.74 us (+14%), 4.75 us (+14%), 4.72 us (+13%), 4.70 us (+13%), 4.71 us (+13%), 4.71 us (+13%), 4.72 us (+13%)
Run 35: warmup (20): 3.95 us (-5%), 4.15 us, 4.48 us (+8%), 4.64 us (+12%), 4.17 us, 4.17 us, 4.24 us, 4.14 us, 4.27 us, 4.66 us (+12%), 4.06 us, 3.98 us, 3.90 us (-6%), 4.06 us, 5.36 us (+29%), 4.50 us (+8%), 3.98 us, 4.13 us, 4.00 us, 3.97 us; samples (50): 3.94 us (-5%), 3.93 us (-6%), 4.00 us, 4.02 us, 4.06 us, 3.99 us, 4.03 us, 4.00 us, 4.01 us, 4.01 us, 4.03 us, 3.99 us, 4.00 us, 4.07 us, 4.05 us, 4.02 us, 4.04 us, 3.96 us, 3.99 us, 4.00 us, 3.99 us, 4.01 us, 3.99 us, 3.96 us, 3.99 us, 3.95 us (-5%), 3.93 us (-6%), 3.92 us (-6%), 4.01 us, 4.00 us, 3.93 us (-6%), 3.98 us, 3.95 us, 3.99 us, 3.93 us (-6%), 4.02 us, 4.37 us (+5%), 4.10 us, 4.15 us, 4.11 us, 4.08 us, 4.14 us, 4.06 us, 4.12 us, 4.31 us, 4.11 us, 4.03 us, 4.01 us, 4.00 us, 4.04 us
Run 36: warmup (20): 4.89 us (+17%), 4.21 us, 4.29 us, 4.26 us, 4.25 us, 4.21 us, 4.26 us, 4.22 us, 4.17 us, 4.19 us, 4.16 us, 4.20 us, 4.14 us, 4.55 us (+9%), 4.63 us (+11%), 4.33 us, 4.20 us, 4.15 us, 4.15 us, 4.13 us; samples (50): 4.19 us, 5.19 us (+25%), 4.43 us (+6%), 4.37 us, 4.21 us, 4.18 us, 4.17 us, 4.09 us, 4.23 us, 4.25 us, 4.14 us, 4.33 us, 4.60 us (+10%), 4.18 us, 4.23 us, 4.30 us, 4.28 us, 4.15 us, 5.12 us (+23%), 5.57 us (+34%), 6.00 us (+44%), 5.58 us (+34%), 6.27 us (+51%), 7.99 us (+92%), 5.60 us (+35%), 6.21 us (+49%), 6.34 us (+52%), 5.02 us (+21%), 6.13 us (+47%), 4.96 us (+19%), 5.16 us (+24%), 5.15 us (+24%), 5.00 us (+20%), 4.98 us (+20%), 5.10 us (+23%), 5.50 us (+32%), 6.25 us (+50%), 5.10 us (+23%), 4.94 us (+19%), 5.11 us (+23%), 7.11 us (+71%), 5.35 us (+29%), 5.29 us (+27%), 4.94 us (+19%), 5.26 us (+26%), 6.18 us (+49%), 5.52 us (+33%), 5.01 us (+20%), 5.11 us (+23%), 5.13 us (+23%)
Run 37: warmup (20): 5.23 us (+26%), 4.72 us (+13%), 4.23 us, 4.16 us, 4.18 us, 4.17 us, 4.16 us, 4.22 us, 4.20 us, 4.22 us, 4.24 us, 4.80 us (+15%), 4.47 us (+7%), 4.24 us, 4.85 us (+17%), 4.26 us, 4.40 us (+6%), 4.25 us, 4.26 us, 4.15 us; samples (50): 4.12 us, 4.16 us, 4.15 us, 4.13 us, 4.12 us, 4.15 us, 4.12 us, 4.13 us, 4.11 us, 4.09 us, 4.11 us, 4.16 us, 4.15 us, 4.09 us, 4.07 us, 4.10 us, 4.14 us, 4.18 us, 4.16 us, 4.16 us, 4.11 us, 4.17 us, 4.18 us, 4.19 us, 4.23 us, 4.12 us, 4.18 us, 4.13 us, 4.19 us, 4.39 us (+5%), 4.18 us, 4.17 us, 4.29 us, 4.95 us (+19%), 4.44 us (+7%), 4.20 us, 4.43 us (+7%), 4.48 us (+8%), 4.17 us, 4.19 us, 4.17 us, 4.23 us, 4.30 us, 4.25 us, 4.24 us, 4.22 us, 4.28 us, 4.29 us, 4.27 us, 4.20 us
Run 38: warmup (20): 4.28 us, 4.34 us, 4.33 us, 4.31 us, 4.33 us, 4.29 us, 4.38 us (+5%), 4.29 us, 4.22 us, 4.28 us, 4.31 us, 4.44 us (+7%), 4.75 us (+14%), 4.46 us (+7%), 4.29 us, 4.34 us, 4.52 us (+9%), 4.30 us, 4.28 us, 4.30 us; samples (50): 4.26 us, 4.27 us, 4.47 us (+7%), 4.28 us, 4.27 us, 4.28 us, 4.28 us, 4.33 us, 4.22 us, 4.30 us, 4.29 us, 4.27 us, 4.28 us, 4.30 us, 4.28 us, 4.52 us (+9%), 4.26 us, 4.31 us, 4.28 us, 4.30 us, 4.28 us, 4.34 us, 4.30 us, 4.31 us, 4.34 us, 4.34 us, 4.34 us, 4.37 us (+5%), 4.39 us (+6%), 4.34 us, 4.37 us (+5%), 4.87 us (+17%), 4.29 us, 4.27 us, 4.26 us, 4.29 us, 4.28 us, 4.36 us, 4.28 us, 4.28 us, 4.30 us, 4.28 us, 4.28 us, 4.25 us, 4.22 us, 4.22 us, 4.23 us, 4.23 us, 4.20 us, 4.20 us
Run 39: warmup (20): 4.37 us (+5%), 4.45 us (+7%), 4.41 us (+6%), 4.46 us (+7%), 4.45 us (+7%), 4.48 us (+8%), 4.44 us (+7%), 4.38 us (+5%), 4.42 us (+6%), 4.45 us (+7%), 4.48 us (+8%), 4.46 us (+7%), 4.44 us (+7%), 4.44 us (+7%), 4.41 us (+6%), 4.48 us (+8%), 4.44 us (+7%), 4.49 us (+8%), 4.37 us (+5%), 4.40 us (+6%); samples (50): 4.43 us (+6%), 4.50 us (+8%), 4.45 us (+7%), 4.49 us (+8%), 4.50 us (+8%), 4.49 us (+8%), 4.52 us (+9%), 4.49 us (+8%), 4.45 us (+7%), 4.42 us (+6%), 4.45 us (+7%), 4.45 us (+7%), 4.44 us (+7%), 4.41 us (+6%), 4.45 us (+7%), 4.44 us (+7%), 4.40 us (+6%), 4.41 us (+6%), 4.42 us (+6%), 4.47 us (+8%), 4.45 us (+7%), 4.45 us (+7%), 4.42 us (+6%), 4.38 us (+5%), 4.46 us (+7%), 4.48 us (+8%), 4.45 us (+7%), 4.38 us (+5%), 4.41 us (+6%), 4.44 us (+7%), 4.44 us (+7%), 4.47 us (+7%), 4.50 us (+8%), 4.44 us (+7%), 4.46 us (+7%), 4.46 us (+7%), 4.46 us (+7%), 4.36 us, 4.41 us (+6%), 4.47 us (+7%), 4.42 us (+6%), 4.35 us, 4.40 us (+6%), 4.39 us (+6%), 4.34 us, 4.39 us (+6%), 4.41 us (+6%), 4.40 us (+6%), 4.42 us (+6%), 4.37 us
Run 40: warmup (20): 3.91 us (-6%), 3.96 us, 3.97 us, 3.97 us, 3.94 us (-5%), 3.96 us, 4.00 us, 3.97 us, 3.96 us, 3.99 us, 3.97 us, 3.95 us, 3.96 us, 3.96 us, 3.92 us (-6%), 3.96 us, 3.93 us (-6%), 3.96 us, 4.04 us, 4.13 us; samples (50): 4.08 us, 3.98 us, 3.94 us (-5%), 4.00 us, 4.08 us, 4.03 us, 4.01 us, 3.99 us, 4.13 us, 4.15 us, 5.44 us (+31%), 4.15 us, 4.31 us, 5.36 us (+29%), 4.42 us (+6%), 4.07 us, 4.19 us, 4.95 us (+19%), 4.83 us (+16%), 4.69 us (+13%), 4.91 us (+18%), 4.67 us (+12%), 4.27 us, 4.44 us (+7%), 4.14 us, 4.30 us, 4.06 us, 4.22 us, 4.09 us, 4.87 us (+17%), 4.86 us (+17%), 4.53 us (+9%), 4.21 us, 4.27 us, 4.04 us, 4.01 us, 4.00 us, 3.98 us, 3.98 us, 4.04 us, 3.98 us, 4.02 us, 3.97 us, 4.02 us, 4.02 us, 4.01 us, 4.04 us, 3.98 us, 3.96 us, 4.65 us (+12%)

3.70 us:  119 #######
3.97 us: 1156 #################################################################
4.23 us:  371 #####################
4.50 us:  116 #######
4.76 us:   77 ####
5.02 us:   64 ####
5.29 us:   32 ##
5.55 us:   15 #
5.82 us:   12 #
6.08 us:   14 #
6.35 us:    4 |
6.61 us:    5 |
6.88 us:    3 |
7.14 us:    2 |
7.40 us:    0 |
7.67 us:    1 |
7.93 us:    3 |
8.20 us:    1 |
8.46 us:    3 |
8.73 us:    1 |
8.99 us:    1 |

WARNING: the benchmark seems unstable, the standard deviation is high (stdev/median: 13%)
Try to rerun the benchmark with more runs, samples and/or loops

Median +- std dev: 4.16 us +- 0.53 us

with changes

........................................
Metadata:
- aslr: Full randomization
- boot_time: 2016-10-03T11:28:53
- cpu_config: 0-3=driver:intel_pstate, intel_pstate:turbo, governor:powersave; idle:intel_idle
- cpu_count: 4
- cpu_model_name: Intel(R) Core(TM) i7-5600U CPU @ 2.60GHz
- hostname: funami
- loops: 2^15
- name: timeit
- perf_version: 0.7.12
- platform: Linux-4.7.5-1-ARCH-x86_64-with-arch
- python_cflags: -Wno-unused-result -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes
- python_executable: /home/yui/.virtualenvs/databazaar/bin/python
- python_implementation: cpython
- python_version: 3.4.3 (64-bit) revision b4cbecbc0781
- timeit_setup: 'import pandas as pd;s = pd.Series([1, 2, 3])'
- timeit_stmt: 's[0] = 1'
- timer: clock_gettime(CLOCK_MONOTONIC), resolution: 1.00 ns

Run 1: warmup (36): 1.04 ms (+26664%), 26.9 us (+596%), 14.8 us (+283%), 10.6 us (+174%), 8.62 us (+123%), 7.60 us (+97%), 7.21 us (+86%), 7.11 us (+84%), 6.85 us (+77%), 7.09 us (+83%), 6.98 us (+80%), 6.64 us (+72%), 3.75 us, 3.63 us (-6%), 3.66 us (-5%), 3.71 us, 3.74 us, 3.83 us, 3.79 us, 3.65 us (-6%), 3.72 us, 3.70 us, 3.71 us, 3.73 us, 3.73 us, 3.66 us (-5%), 3.83 us, 4.85 us (+25%), 3.73 us, 3.74 us, 4.29 us (+11%), 3.71 us, 3.77 us, 3.75 us, 3.74 us, 3.67 us (-5%); samples (50): 3.67 us (-5%), 3.64 us (-6%), 3.65 us (-6%), 3.65 us (-6%), 3.73 us, 4.11 us (+6%), 4.20 us (+9%), 3.68 us, 4.48 us (+16%), 4.63 us (+20%), 3.79 us, 3.63 us (-6%), 3.73 us, 3.64 us (-6%), 3.63 us (-6%), 3.63 us (-6%), 3.64 us (-6%), 3.72 us, 3.70 us, 3.70 us, 3.82 us, 3.83 us, 3.79 us, 3.74 us, 3.63 us (-6%), 3.69 us, 3.79 us, 3.83 us, 3.75 us, 3.89 us, 3.73 us, 3.75 us, 3.77 us, 4.33 us (+12%), 4.78 us (+23%), 4.14 us (+7%), 4.85 us (+25%), 4.02 us, 3.98 us, 3.96 us, 3.83 us, 3.72 us, 3.73 us, 3.76 us, 3.73 us, 3.77 us, 3.68 us, 3.68 us, 4.08 us (+6%), 3.73 us
Run 2: warmup (20): 4.53 us (+17%), 4.47 us (+16%), 4.45 us (+15%), 4.44 us (+15%), 4.30 us (+11%), 4.36 us (+13%), 4.32 us (+12%), 4.31 us (+11%), 4.25 us (+10%), 4.26 us (+10%), 4.35 us (+12%), 4.34 us (+12%), 4.31 us (+11%), 4.31 us (+11%), 4.42 us (+14%), 4.41 us (+14%), 4.34 us (+12%), 4.32 us (+12%), 4.41 us (+14%), 4.34 us (+12%); samples (50): 4.57 us (+18%), 4.36 us (+13%), 4.30 us (+11%), 4.29 us (+11%), 4.40 us (+14%), 4.38 us (+13%), 4.31 us (+11%), 4.21 us (+9%), 4.36 us (+13%), 4.83 us (+25%), 4.37 us (+13%), 4.35 us (+13%), 4.43 us (+15%), 4.40 us (+14%), 4.41 us (+14%), 4.41 us (+14%), 4.53 us (+17%), 4.39 us (+13%), 4.98 us (+29%), 5.35 us (+38%), 6.78 us (+75%), 5.24 us (+36%), 5.14 us (+33%), 4.31 us (+11%), 4.32 us (+12%), 4.27 us (+10%), 4.34 us (+12%), 4.33 us (+12%), 4.36 us (+13%), 4.40 us (+14%), 4.45 us (+15%), 4.57 us (+18%), 5.20 us (+35%), 4.31 us (+11%), 4.49 us (+16%), 5.58 us (+44%), 6.60 us (+71%), 6.91 us (+79%), 6.67 us (+72%), 5.98 us (+55%), 5.44 us (+41%), 5.60 us (+45%), 5.56 us (+44%), 5.58 us (+44%), 6.68 us (+73%), 6.60 us (+71%), 6.24 us (+61%), 4.78 us (+24%), 6.12 us (+58%), 8.45 us (+118%)
Run 3: warmup (20): 6.46 us (+67%), 4.96 us (+28%), 4.88 us (+26%), 4.73 us (+22%), 4.28 us (+11%), 4.33 us (+12%), 4.29 us (+11%), 4.98 us (+29%), 7.88 us (+104%), 5.76 us (+49%), 5.82 us (+50%), 4.56 us (+18%), 4.71 us (+22%), 8.21 us (+112%), 8.16 us (+111%), 6.01 us (+56%), 6.12 us (+58%), 4.57 us (+18%), 3.90 us, 3.82 us; samples (50): 3.85 us, 3.80 us, 3.79 us, 3.81 us, 3.79 us, 3.80 us, 3.85 us, 3.83 us, 3.91 us, 4.41 us (+14%), 4.11 us (+6%), 3.91 us, 3.91 us, 3.77 us, 3.83 us, 3.82 us, 3.81 us, 3.96 us, 3.84 us, 3.84 us, 3.92 us, 3.85 us, 3.84 us, 3.84 us, 3.86 us, 3.86 us, 3.85 us, 3.82 us, 3.82 us, 3.84 us, 3.83 us, 3.89 us, 3.94 us, 3.84 us, 3.82 us, 3.87 us, 4.95 us (+28%), 4.62 us (+19%), 3.87 us, 3.85 us, 4.75 us (+23%), 7.72 us (+100%), 4.54 us (+17%), 4.41 us (+14%), 4.28 us (+11%), 4.02 us, 3.94 us, 3.90 us, 3.89 us, 3.84 us
Run 4: warmup (20): 4.04 us, 4.11 us (+6%), 4.01 us, 4.02 us, 4.02 us, 3.98 us, 4.03 us, 4.02 us, 3.96 us, 3.96 us, 3.96 us, 3.95 us, 3.96 us, 3.94 us, 3.92 us, 3.95 us, 3.96 us, 3.92 us, 3.93 us, 3.95 us; samples (50): 3.92 us, 3.95 us, 3.99 us, 3.92 us, 3.92 us, 3.96 us, 4.04 us, 3.96 us, 3.97 us, 3.93 us, 3.96 us, 3.94 us, 3.97 us, 3.92 us, 3.93 us, 3.90 us, 3.95 us, 3.95 us, 3.95 us, 3.95 us, 3.99 us, 4.03 us, 4.01 us, 3.97 us, 3.95 us, 3.96 us, 3.99 us, 4.06 us, 4.07 us (+5%), 3.96 us, 3.89 us, 3.93 us, 3.93 us, 3.93 us, 3.88 us, 3.92 us, 3.94 us, 3.95 us, 3.86 us, 3.88 us, 4.45 us (+15%), 4.32 us (+12%), 4.17 us (+8%), 4.26 us (+10%), 4.01 us, 3.92 us, 3.92 us, 3.95 us, 3.89 us, 3.93 us
Run 5: warmup (20): 3.96 us, 3.75 us, 4.10 us (+6%), 5.04 us (+30%), 3.77 us, 3.71 us, 3.99 us, 4.08 us (+5%), 3.76 us, 3.73 us, 3.73 us, 3.75 us, 3.68 us, 3.70 us, 3.71 us, 3.69 us, 3.72 us, 3.72 us, 3.73 us, 3.70 us; samples (50): 3.72 us, 3.72 us, 3.77 us, 3.69 us, 3.72 us, 3.68 us, 3.75 us, 3.82 us, 3.75 us, 3.75 us, 3.73 us, 3.76 us, 3.78 us, 3.74 us, 3.71 us, 3.76 us, 3.72 us, 3.71 us, 3.70 us, 3.69 us, 3.66 us (-5%), 3.73 us, 3.74 us, 3.69 us, 3.69 us, 3.68 us, 3.68 us, 3.69 us, 3.71 us, 3.69 us, 3.70 us, 3.70 us, 3.70 us, 3.69 us, 3.67 us (-5%), 3.67 us (-5%), 3.73 us, 3.68 us, 3.68 us, 3.71 us, 3.77 us, 3.69 us, 3.67 us (-5%), 3.70 us, 3.70 us, 3.72 us, 3.68 us, 3.72 us, 3.78 us, 3.72 us
Run 6: warmup (20): 3.79 us, 3.81 us, 3.83 us, 3.82 us, 3.83 us, 4.03 us, 3.84 us, 3.81 us, 3.96 us, 4.11 us (+6%), 4.34 us (+12%), 4.21 us (+9%), 4.14 us (+7%), 4.19 us (+8%), 4.02 us, 4.07 us (+5%), 3.90 us, 3.89 us, 3.87 us, 3.89 us; samples (50): 3.81 us, 3.81 us, 3.85 us, 3.88 us, 3.84 us, 4.09 us (+6%), 4.30 us (+11%), 4.41 us (+14%), 4.12 us (+6%), 4.18 us (+8%), 4.06 us (+5%), 4.75 us (+23%), 5.03 us (+30%), 3.83 us, 4.94 us (+28%), 3.82 us, 3.88 us, 3.84 us, 3.83 us, 3.85 us, 3.82 us, 3.83 us, 3.81 us, 3.86 us, 3.88 us, 4.20 us (+8%), 3.87 us, 3.81 us, 3.85 us, 3.84 us, 3.82 us, 3.83 us, 3.81 us, 3.88 us, 3.85 us, 3.84 us, 3.89 us, 4.04 us, 3.90 us, 3.80 us, 3.82 us, 3.80 us, 3.77 us, 3.77 us, 3.79 us, 4.14 us (+7%), 3.93 us, 3.80 us, 3.86 us, 3.79 us
Run 7: warmup (20): 3.67 us (-5%), 3.79 us, 3.75 us, 3.76 us, 3.76 us, 3.86 us, 3.77 us, 3.79 us, 3.84 us, 3.78 us, 3.75 us, 3.80 us, 3.76 us, 3.77 us, 3.74 us, 3.74 us, 4.38 us (+13%), 5.60 us (+45%), 3.69 us, 3.71 us; samples (50): 3.74 us, 3.72 us, 3.68 us, 3.72 us, 5.38 us (+39%), 5.94 us (+54%), 5.90 us (+52%), 3.72 us, 3.76 us, 3.75 us, 4.12 us (+7%), 5.96 us (+54%), 5.15 us (+33%), 3.70 us, 3.88 us, 3.77 us, 3.74 us, 3.77 us, 3.86 us, 3.74 us, 3.72 us, 3.73 us, 3.72 us, 3.76 us, 4.02 us, 4.36 us (+13%), 4.09 us (+6%), 3.87 us, 3.78 us, 3.75 us, 3.74 us, 3.74 us, 3.70 us, 3.74 us, 3.73 us, 3.87 us, 3.74 us, 3.75 us, 3.73 us, 3.73 us, 3.74 us, 3.75 us, 3.76 us, 3.73 us, 3.73 us, 3.74 us, 3.78 us, 3.77 us, 3.74 us, 3.75 us
Run 8: warmup (20): 3.69 us, 3.74 us, 3.73 us, 3.75 us, 3.75 us, 3.71 us, 3.74 us, 3.76 us, 3.70 us, 3.69 us, 3.70 us, 3.74 us, 3.74 us, 3.70 us, 3.72 us, 3.72 us, 3.78 us, 3.75 us, 3.74 us, 3.74 us; samples (50): 3.72 us, 3.77 us, 3.70 us, 3.75 us, 3.72 us, 3.74 us, 3.72 us, 3.77 us, 3.74 us, 3.78 us, 3.77 us, 3.77 us, 3.73 us, 3.77 us, 3.73 us, 3.73 us, 3.74 us, 3.72 us, 3.72 us, 3.74 us, 3.74 us, 3.75 us, 3.76 us, 3.75 us, 3.73 us, 3.74 us, 3.74 us, 3.72 us, 3.73 us, 3.73 us, 3.70 us, 3.69 us, 3.77 us, 3.72 us, 3.72 us, 3.68 us, 3.71 us, 3.71 us, 3.68 us, 3.73 us, 3.70 us, 3.71 us, 3.71 us, 3.74 us, 3.73 us, 3.72 us, 3.74 us, 3.71 us, 3.74 us, 3.70 us
Run 9: warmup (20): 3.92 us, 3.90 us, 3.94 us, 4.01 us, 3.93 us, 3.89 us, 3.96 us, 3.90 us, 3.88 us, 3.90 us, 3.96 us, 4.18 us (+8%), 3.88 us, 3.94 us, 3.88 us, 3.88 us, 4.12 us (+6%), 3.86 us, 3.87 us, 4.00 us; samples (50): 3.89 us, 3.90 us, 3.92 us, 4.00 us, 4.69 us (+21%), 3.90 us, 3.85 us, 3.86 us, 3.92 us, 3.90 us, 3.93 us, 3.91 us, 3.92 us, 3.93 us, 3.93 us, 4.18 us (+8%), 3.87 us, 3.92 us, 4.01 us, 3.98 us, 3.91 us, 3.99 us, 3.97 us, 4.31 us (+11%), 4.00 us, 3.98 us, 5.13 us (+33%), 6.13 us (+58%), 6.07 us (+57%), 5.33 us (+38%), 5.94 us (+54%), 5.90 us (+52%), 5.11 us (+32%), 5.02 us (+30%), 5.09 us (+32%), 4.93 us (+27%), 4.89 us (+26%), 5.04 us (+30%), 5.02 us (+30%), 5.17 us (+34%), 4.98 us (+29%), 4.81 us (+24%), 4.99 us (+29%), 4.96 us (+28%), 5.54 us (+43%), 5.90 us (+53%), 5.78 us (+49%), 6.18 us (+60%), 5.09 us (+31%), 5.07 us (+31%)
Run 10: warmup (20): 6.41 us (+66%), 6.36 us (+64%), 6.70 us (+73%), 6.65 us (+72%), 5.99 us (+55%), 5.48 us (+42%), 6.16 us (+59%), 6.14 us (+59%), 4.08 us (+6%), 4.00 us, 4.01 us, 4.06 us, 4.13 us (+7%), 4.12 us (+7%), 4.03 us, 4.08 us (+5%), 4.05 us, 4.11 us (+6%), 4.04 us, 4.16 us (+7%); samples (50): 4.01 us, 3.98 us, 4.04 us, 3.99 us, 3.97 us, 3.94 us, 4.00 us, 5.32 us (+37%), 4.82 us (+25%), 3.96 us, 3.96 us, 4.02 us, 4.05 us, 4.11 us (+6%), 3.97 us, 4.06 us (+5%), 4.05 us, 4.01 us, 3.98 us, 4.08 us (+5%), 3.99 us, 4.02 us, 4.08 us (+5%), 4.07 us (+5%), 3.98 us, 4.04 us, 4.03 us, 5.59 us (+45%), 4.98 us (+29%), 3.99 us, 4.05 us, 4.05 us, 4.00 us, 3.98 us, 4.01 us, 3.99 us, 4.00 us, 4.02 us, 4.05 us, 3.99 us, 3.95 us, 4.33 us (+12%), 6.48 us (+68%), 4.07 us (+5%), 4.06 us, 4.04 us, 4.04 us, 3.99 us, 3.96 us, 4.01 us
Run 11: warmup (20): 3.78 us, 3.78 us, 3.75 us, 4.67 us (+21%), 5.66 us (+46%), 3.80 us, 3.80 us, 3.77 us, 3.78 us, 3.75 us, 3.80 us, 3.77 us, 3.75 us, 3.77 us, 3.76 us, 3.77 us, 3.78 us, 3.78 us, 3.78 us, 3.74 us; samples (50): 3.75 us, 3.76 us, 3.74 us, 3.76 us, 3.77 us, 3.78 us, 3.71 us, 3.76 us, 3.74 us, 3.80 us, 3.73 us, 3.77 us, 3.76 us, 3.77 us, 3.78 us, 3.82 us, 3.75 us, 3.78 us, 3.77 us, 3.74 us, 3.73 us, 3.79 us, 3.78 us, 3.73 us, 3.78 us, 3.77 us, 3.78 us, 3.75 us, 3.74 us, 3.80 us, 3.80 us, 5.09 us (+32%), 5.45 us (+41%), 3.74 us, 3.77 us, 3.75 us, 3.75 us, 3.78 us, 3.74 us, 3.73 us, 3.72 us, 3.76 us, 3.72 us, 3.75 us, 3.75 us, 3.72 us, 3.97 us, 6.03 us (+56%), 4.36 us (+13%), 3.77 us
Run 12: warmup (20): 3.73 us, 3.80 us, 3.80 us, 3.79 us, 3.79 us, 3.81 us, 3.80 us, 3.80 us, 3.77 us, 3.81 us, 3.77 us, 3.82 us, 3.84 us, 3.80 us, 3.80 us, 3.81 us, 3.83 us, 3.77 us, 3.76 us, 3.81 us; samples (50): 3.85 us, 4.06 us, 4.17 us (+8%), 3.84 us, 3.80 us, 3.78 us, 3.76 us, 3.83 us, 3.78 us, 3.80 us, 3.81 us, 3.80 us, 4.07 us (+5%), 3.83 us, 3.83 us, 3.81 us, 3.83 us, 4.80 us (+24%), 4.29 us (+11%), 3.80 us, 4.14 us (+7%), 3.78 us, 4.82 us (+25%), 4.24 us (+10%), 3.81 us, 3.76 us, 3.78 us, 4.61 us (+19%), 4.61 us (+19%), 3.81 us, 3.82 us, 3.82 us, 4.05 us, 3.93 us, 3.78 us, 3.73 us, 3.73 us, 3.74 us, 3.72 us, 3.79 us, 3.82 us, 3.73 us, 3.79 us, 3.80 us, 3.76 us, 3.74 us, 3.74 us, 3.78 us, 3.79 us, 3.75 us
Run 13: warmup (20): 3.70 us, 3.71 us, 3.78 us, 3.76 us, 3.74 us, 3.76 us, 3.73 us, 3.75 us, 3.72 us, 3.73 us, 3.73 us, 3.72 us, 3.83 us, 3.76 us, 3.71 us, 3.74 us, 3.74 us, 3.74 us, 3.73 us, 3.72 us; samples (50): 3.73 us, 3.72 us, 3.75 us, 3.72 us, 3.73 us, 3.77 us, 3.73 us, 3.76 us, 3.76 us, 3.73 us, 3.73 us, 3.77 us, 3.76 us, 3.81 us, 3.78 us, 3.76 us, 3.73 us, 3.77 us, 3.72 us, 3.74 us, 3.74 us, 3.78 us, 3.77 us, 3.76 us, 3.76 us, 3.76 us, 3.81 us, 3.78 us, 3.73 us, 3.77 us, 3.77 us, 4.23 us (+9%), 3.78 us, 3.78 us, 3.77 us, 3.76 us, 3.77 us, 3.73 us, 3.71 us, 3.74 us, 3.67 us (-5%), 3.70 us, 3.74 us, 3.72 us, 3.72 us, 3.73 us, 3.73 us, 3.76 us, 3.71 us, 3.73 us
Run 14: warmup (20): 3.76 us, 3.76 us, 3.74 us, 3.74 us, 3.71 us, 3.71 us, 3.73 us, 3.75 us, 3.76 us, 3.70 us, 3.71 us, 3.72 us, 3.68 us, 3.76 us, 3.66 us (-5%), 3.70 us, 3.67 us (-5%), 3.69 us, 3.74 us, 3.68 us; samples (50): 3.69 us, 3.77 us, 3.71 us, 3.70 us, 3.71 us, 3.71 us, 3.73 us, 3.71 us, 3.80 us, 3.73 us, 3.72 us, 3.76 us, 3.72 us, 3.76 us, 3.73 us, 3.73 us, 3.77 us, 3.76 us, 3.77 us, 3.73 us, 3.72 us, 3.81 us, 3.70 us, 3.74 us, 3.76 us, 3.74 us, 3.79 us, 3.74 us, 3.76 us, 3.71 us, 3.75 us, 3.75 us, 3.68 us, 3.72 us, 3.68 us, 3.70 us, 3.72 us, 3.71 us, 3.69 us, 3.69 us, 3.69 us, 3.76 us, 3.71 us, 3.70 us, 3.71 us, 3.70 us, 3.74 us, 3.70 us, 3.71 us, 3.72 us
Run 15: warmup (20): 3.73 us, 3.83 us, 3.78 us, 3.86 us, 3.83 us, 3.81 us, 3.80 us, 3.88 us, 3.81 us, 3.79 us, 3.76 us, 3.80 us, 3.73 us, 3.80 us, 3.74 us, 3.80 us, 3.77 us, 3.68 us, 3.78 us, 3.74 us; samples (50): 3.72 us, 3.74 us, 3.70 us, 3.70 us, 3.73 us, 3.69 us, 3.74 us, 3.72 us, 3.71 us, 3.78 us, 3.76 us, 3.79 us, 3.70 us, 3.74 us, 3.76 us, 3.71 us, 3.78 us, 3.75 us, 3.72 us, 3.80 us, 3.71 us, 3.74 us, 3.75 us, 3.76 us, 3.77 us, 3.71 us, 3.75 us, 3.75 us, 3.72 us, 3.74 us, 3.78 us, 3.83 us, 3.74 us, 3.72 us, 3.74 us, 3.75 us, 3.74 us, 3.68 us, 3.68 us, 3.73 us, 3.70 us, 3.72 us, 3.77 us, 3.81 us, 3.76 us, 3.68 us, 3.71 us, 3.72 us, 3.70 us, 3.70 us
Run 16: warmup (20): 4.29 us (+11%), 4.58 us (+19%), 4.49 us (+16%), 4.34 us (+12%), 4.39 us (+13%), 4.40 us (+14%), 4.36 us (+13%), 4.35 us (+12%), 4.31 us (+12%), 4.33 us (+12%), 4.32 us (+12%), 4.36 us (+13%), 4.37 us (+13%), 4.33 us (+12%), 4.31 us (+12%), 4.33 us (+12%), 4.54 us (+17%), 4.28 us (+11%), 4.33 us (+12%), 4.31 us (+11%); samples (50): 4.32 us (+12%), 4.34 us (+12%), 4.31 us (+11%), 5.14 us (+33%), 4.38 us (+13%), 4.31 us (+12%), 4.29 us (+11%), 4.28 us (+11%), 4.27 us (+10%), 4.27 us (+10%), 4.29 us (+11%), 4.31 us (+12%), 4.32 us (+12%), 4.32 us (+12%), 4.27 us (+10%), 4.29 us (+11%), 4.29 us (+11%), 4.33 us (+12%), 4.51 us (+17%), 6.48 us (+67%), 6.42 us (+66%), 6.27 us (+62%), 6.18 us (+60%), 6.46 us (+67%), 5.97 us (+54%), 5.67 us (+47%), 5.12 us (+32%), 4.58 us (+18%), 4.48 us (+16%), 4.67 us (+21%), 5.02 us (+30%), 5.00 us (+29%), 4.96 us (+28%), 5.17 us (+34%), 5.30 us (+37%), 4.95 us (+28%), 4.97 us (+28%), 4.90 us (+27%), 4.95 us (+28%), 5.23 us (+35%), 4.44 us (+15%), 5.21 us (+35%), 4.42 us (+14%), 4.48 us (+16%), 5.01 us (+30%), 5.52 us (+43%), 5.17 us (+34%), 5.24 us (+35%), 6.49 us (+68%), 6.70 us (+73%)
Run 17: warmup (20): 3.95 us, 4.40 us (+14%), 3.87 us, 3.86 us, 3.76 us, 3.75 us, 3.71 us, 3.69 us, 3.74 us, 3.72 us, 3.75 us, 3.69 us, 3.76 us, 3.72 us, 3.75 us, 3.71 us, 3.74 us, 3.75 us, 3.69 us, 3.71 us; samples (50): 3.72 us, 3.71 us, 3.68 us, 3.70 us, 3.67 us (-5%), 3.76 us, 3.77 us, 3.73 us, 3.74 us, 3.74 us, 3.73 us, 3.73 us, 3.78 us, 3.80 us, 3.79 us, 3.81 us, 3.79 us, 3.75 us, 3.79 us, 3.81 us, 3.86 us, 3.82 us, 3.78 us, 3.76 us, 3.76 us, 3.81 us, 3.72 us, 3.71 us, 3.69 us, 3.71 us, 3.71 us, 3.71 us, 3.68 us, 3.68 us, 3.69 us, 3.70 us, 3.75 us, 3.72 us, 3.70 us, 3.71 us, 3.69 us, 3.74 us, 3.73 us, 3.72 us, 3.70 us, 3.71 us, 3.71 us, 3.72 us, 3.68 us, 3.72 us
Run 18: warmup (20): 3.94 us, 3.96 us, 4.08 us (+5%), 4.07 us (+5%), 4.01 us, 4.06 us (+5%), 4.06 us, 4.01 us, 4.02 us, 3.99 us, 4.00 us, 4.04 us, 3.99 us, 4.03 us, 4.81 us (+24%), 3.98 us, 4.04 us, 3.99 us, 4.02 us, 4.00 us; samples (50): 3.99 us, 4.04 us, 3.99 us, 4.00 us, 4.00 us, 4.02 us, 4.12 us (+6%), 4.02 us, 4.03 us, 5.03 us (+30%), 3.98 us, 4.01 us, 4.00 us, 4.00 us, 4.05 us, 3.97 us, 4.03 us, 4.02 us, 3.97 us, 4.87 us (+26%), 3.97 us, 4.04 us, 3.97 us, 4.27 us (+11%), 4.06 us, 4.06 us, 4.08 us (+5%), 4.01 us, 4.02 us, 4.04 us, 4.00 us, 4.11 us (+6%), 4.08 us (+5%), 4.04 us, 4.07 us (+5%), 4.17 us (+8%), 4.18 us (+8%), 3.98 us, 4.28 us (+11%), 4.69 us (+21%), 3.95 us, 4.02 us, 3.98 us, 3.98 us, 3.97 us, 3.98 us, 4.01 us, 3.98 us, 3.96 us, 3.95 us
Run 19: warmup (20): 4.14 us (+7%), 4.59 us (+19%), 3.86 us, 3.85 us, 3.89 us, 3.84 us, 3.92 us, 3.82 us, 3.80 us, 3.92 us, 3.87 us, 3.86 us, 3.87 us, 3.95 us, 3.88 us, 3.83 us, 4.94 us (+28%), 3.85 us, 3.83 us, 3.92 us; samples (50): 3.89 us, 3.90 us, 3.89 us, 3.96 us, 3.85 us, 3.89 us, 3.83 us, 3.90 us, 3.86 us, 3.89 us, 3.84 us, 4.21 us (+9%), 3.82 us, 3.85 us, 3.86 us, 3.93 us, 3.86 us, 3.88 us, 3.82 us, 3.82 us, 3.80 us, 3.85 us, 4.81 us (+24%), 3.82 us, 4.04 us, 4.36 us (+13%), 4.82 us (+25%), 4.51 us (+17%), 3.87 us, 3.89 us, 3.97 us, 3.86 us, 3.89 us, 4.79 us (+24%), 4.59 us (+19%), 3.90 us, 3.90 us, 3.85 us, 3.83 us, 3.87 us, 3.89 us, 3.86 us, 3.92 us, 3.92 us, 3.82 us, 3.84 us, 3.81 us, 3.84 us, 3.96 us, 3.82 us
Run 20: warmup (20): 3.89 us, 3.88 us, 3.84 us, 3.81 us, 3.79 us, 3.82 us, 3.77 us, 3.77 us, 3.78 us, 3.80 us, 3.78 us, 3.77 us, 3.76 us, 3.79 us, 3.77 us, 3.74 us, 3.77 us, 3.75 us, 3.74 us, 3.78 us; samples (50): 3.75 us, 3.77 us, 3.75 us, 3.77 us, 3.77 us, 3.76 us, 3.76 us, 3.81 us, 3.81 us, 3.83 us, 3.80 us, 3.82 us, 3.77 us, 3.76 us, 3.74 us, 3.80 us, 3.76 us, 3.80 us, 3.76 us, 3.75 us, 3.80 us, 3.77 us, 3.74 us, 3.78 us, 3.76 us, 3.77 us, 3.81 us, 3.74 us, 3.75 us, 3.77 us, 3.75 us, 3.79 us, 3.80 us, 3.74 us, 3.74 us, 3.79 us, 3.83 us, 3.79 us, 3.78 us, 3.79 us, 3.79 us, 3.77 us, 3.76 us, 3.76 us, 3.79 us, 3.83 us, 3.76 us, 3.74 us, 3.77 us, 3.78 us
Run 21: warmup (20): 4.01 us, 4.10 us (+6%), 4.02 us, 4.03 us, 4.07 us (+5%), 4.06 us, 4.04 us, 4.04 us, 4.05 us, 3.98 us, 3.97 us, 4.03 us, 4.00 us, 4.00 us, 4.02 us, 4.00 us, 4.00 us, 4.01 us, 4.01 us, 3.94 us; samples (50): 4.00 us, 4.00 us, 4.00 us, 4.05 us, 4.00 us, 3.99 us, 4.13 us (+7%), 4.01 us, 3.97 us, 3.99 us, 4.03 us, 4.01 us, 3.97 us, 4.03 us, 4.06 us (+5%), 4.06 us, 4.02 us, 4.05 us, 4.01 us, 4.03 us, 4.23 us (+9%), 4.45 us (+15%), 4.49 us (+16%), 4.16 us (+8%), 4.13 us (+7%), 4.07 us (+5%), 3.97 us, 3.96 us, 3.94 us, 4.24 us (+10%), 4.06 us, 4.00 us, 3.98 us, 4.09 us (+6%), 3.94 us, 4.05 us, 3.97 us, 3.97 us, 3.92 us, 3.93 us, 4.01 us, 3.97 us, 3.99 us, 3.97 us, 3.96 us, 4.17 us (+8%), 3.97 us, 4.01 us, 4.06 us, 3.99 us
Run 22: warmup (20): 4.07 us (+5%), 4.05 us, 4.09 us (+6%), 4.22 us (+9%), 4.02 us, 4.17 us (+8%), 4.18 us (+8%), 4.53 us (+17%), 5.20 us (+34%), 4.02 us, 4.04 us, 4.10 us (+6%), 4.05 us, 4.04 us, 4.02 us, 4.05 us, 4.09 us (+6%), 4.09 us (+6%), 4.02 us, 4.01 us; samples (50): 4.01 us, 4.10 us (+6%), 4.06 us, 3.97 us, 3.98 us, 4.08 us (+5%), 4.07 us (+5%), 4.05 us, 4.04 us, 4.06 us, 4.08 us (+5%), 4.08 us (+5%), 3.99 us, 4.05 us, 4.08 us (+5%), 4.07 us (+5%), 4.05 us, 4.03 us, 4.04 us, 3.99 us, 3.97 us, 4.00 us, 4.01 us, 4.03 us, 4.12 us (+7%), 4.07 us (+5%), 4.03 us, 4.01 us, 4.05 us, 4.12 us (+7%), 4.00 us, 5.51 us (+42%), 4.14 us (+7%), 4.10 us (+6%), 4.08 us (+5%), 4.01 us, 4.14 us (+7%), 4.00 us, 4.00 us, 4.06 us (+5%), 4.08 us (+5%), 4.01 us, 4.03 us, 4.10 us (+6%), 4.00 us, 4.06 us (+5%), 4.20 us (+9%), 4.05 us, 4.01 us, 4.05 us
Run 23: warmup (20): 3.94 us, 3.99 us, 3.98 us, 4.00 us, 3.99 us, 4.01 us, 3.97 us, 4.05 us, 3.99 us, 3.99 us, 3.99 us, 3.99 us, 3.99 us, 4.01 us, 4.01 us, 4.03 us, 4.00 us, 4.00 us, 3.96 us, 3.93 us; samples (50): 3.93 us, 3.94 us, 3.97 us, 3.96 us, 3.95 us, 3.95 us, 3.95 us, 3.95 us, 6.29 us (+63%), 6.04 us (+56%), 4.51 us (+17%), 6.12 us (+58%), 6.09 us (+57%), 6.34 us (+64%), 6.77 us (+75%), 5.96 us (+54%), 6.38 us (+65%), 7.50 us (+94%), 8.22 us (+112%), 6.06 us (+57%), 6.12 us (+58%), 6.97 us (+80%), 6.13 us (+58%), 5.72 us (+48%), 6.41 us (+66%), 6.50 us (+68%), 6.40 us (+65%), 5.80 us (+50%), 7.34 us (+90%), 6.54 us (+69%), 6.44 us (+67%), 8.51 us (+120%), 6.14 us (+59%), 4.52 us (+17%), 4.33 us (+12%), 4.97 us (+29%), 4.59 us (+19%), 4.21 us (+9%), 4.27 us (+10%), 4.14 us (+7%), 4.23 us (+9%), 4.19 us (+8%), 4.02 us, 4.73 us (+22%), 4.00 us, 4.00 us, 4.03 us, 4.02 us, 4.00 us, 4.01 us
Run 24: warmup (20): 3.73 us, 3.80 us, 3.79 us, 3.77 us, 3.76 us, 3.80 us, 3.87 us, 3.78 us, 3.72 us, 3.75 us, 3.76 us, 3.76 us, 3.74 us, 3.76 us, 3.74 us, 3.78 us, 3.76 us, 3.77 us, 3.75 us, 3.83 us; samples (50): 3.74 us, 3.75 us, 3.76 us, 3.76 us, 3.78 us, 4.66 us (+20%), 4.31 us (+11%), 3.78 us, 4.41 us (+14%), 5.06 us (+31%), 3.91 us, 4.40 us (+14%), 3.89 us, 4.49 us (+16%), 3.99 us, 3.84 us, 3.75 us, 4.44 us (+15%), 4.40 us (+14%), 4.58 us (+18%), 4.41 us (+14%), 4.42 us (+14%), 6.83 us (+76%), 4.38 us (+13%), 3.87 us, 3.91 us, 3.88 us, 4.59 us (+19%), 4.30 us (+11%), 4.58 us (+18%), 4.06 us (+5%), 3.85 us, 3.81 us, 3.79 us, 3.84 us, 3.84 us, 3.83 us, 3.80 us, 3.76 us, 3.78 us, 3.72 us, 3.75 us, 3.73 us, 4.67 us (+21%), 3.73 us, 3.74 us, 3.74 us, 3.76 us, 3.79 us, 3.75 us
Run 25: warmup (20): 3.73 us, 3.75 us, 3.74 us, 3.79 us, 3.73 us, 3.73 us, 3.75 us, 3.76 us, 3.74 us, 3.74 us, 3.74 us, 3.76 us, 3.74 us, 3.76 us, 3.73 us, 3.78 us, 3.71 us, 3.73 us, 3.72 us, 3.74 us; samples (50): 3.77 us, 3.72 us, 3.72 us, 3.73 us, 3.74 us, 3.75 us, 3.74 us, 3.77 us, 3.75 us, 3.79 us, 3.76 us, 3.77 us, 3.73 us, 3.73 us, 3.78 us, 3.79 us, 3.78 us, 3.78 us, 3.76 us, 3.74 us, 3.77 us, 3.76 us, 3.73 us, 3.75 us, 3.76 us, 3.74 us, 3.77 us, 3.79 us, 3.76 us, 3.75 us, 3.78 us, 3.76 us, 3.78 us, 3.77 us, 3.75 us, 3.79 us, 3.79 us, 3.77 us, 3.74 us, 3.72 us, 3.73 us, 3.78 us, 3.71 us, 3.74 us, 3.74 us, 3.72 us, 3.70 us, 3.75 us, 3.72 us, 3.76 us
Run 26: warmup (20): 4.23 us (+9%), 4.33 us (+12%), 4.35 us (+12%), 4.30 us (+11%), 4.30 us (+11%), 4.31 us (+11%), 4.29 us (+11%), 4.30 us (+11%), 4.27 us (+10%), 4.33 us (+12%), 4.28 us (+11%), 4.27 us (+11%), 4.28 us (+11%), 4.30 us (+11%), 4.30 us (+11%), 4.34 us (+12%), 4.27 us (+11%), 4.31 us (+11%), 4.25 us (+10%), 4.30 us (+11%); samples (50): 4.31 us (+11%), 4.30 us (+11%), 4.31 us (+11%), 4.29 us (+11%), 4.28 us (+11%), 4.28 us (+11%), 4.26 us (+10%), 4.27 us (+10%), 4.34 us (+12%), 4.28 us (+11%), 4.32 us (+12%), 4.26 us (+10%), 4.26 us (+10%), 4.24 us (+10%), 4.26 us (+10%), 4.34 us (+12%), 4.29 us (+11%), 4.28 us (+11%), 4.28 us (+11%), 4.27 us (+11%), 4.32 us (+12%), 4.33 us (+12%), 4.27 us (+10%), 4.30 us (+11%), 4.22 us (+9%), 4.28 us (+11%), 4.31 us (+11%), 4.30 us (+11%), 4.30 us (+11%), 5.48 us (+42%), 6.22 us (+61%), 4.33 us (+12%), 4.37 us (+13%), 4.29 us (+11%), 4.29 us (+11%), 4.28 us (+11%), 4.28 us (+11%), 4.25 us (+10%), 4.23 us (+9%), 4.23 us (+9%), 4.26 us (+10%), 4.27 us (+10%), 4.25 us (+10%), 4.21 us (+9%), 4.83 us (+25%), 6.66 us (+72%), 6.63 us (+71%), 6.76 us (+75%), 6.68 us (+73%), 4.26 us (+10%)
Run 27: warmup (20): 3.75 us, 3.83 us, 3.78 us, 3.73 us, 3.79 us, 3.75 us, 3.78 us, 3.76 us, 3.77 us, 3.72 us, 3.76 us, 3.77 us, 3.75 us, 3.76 us, 4.08 us (+5%), 4.60 us (+19%), 4.25 us (+10%), 3.77 us, 3.89 us, 3.78 us; samples (50): 3.79 us, 3.78 us, 3.78 us, 3.78 us, 3.80 us, 3.76 us, 3.91 us, 3.90 us, 3.96 us, 3.80 us, 3.81 us, 3.82 us, 3.80 us, 3.81 us, 3.83 us, 3.87 us, 5.96 us (+54%), 5.97 us (+54%), 4.94 us (+28%), 3.78 us, 3.77 us, 3.78 us, 3.78 us, 3.76 us, 4.80 us (+24%), 5.61 us (+45%), 3.76 us, 3.74 us, 3.77 us, 4.04 us, 5.98 us (+55%), 5.52 us (+43%), 3.73 us, 3.73 us, 3.75 us, 3.78 us, 3.80 us, 3.76 us, 3.74 us, 3.76 us, 3.75 us, 3.72 us, 3.73 us, 3.77 us, 3.75 us, 3.81 us, 3.77 us, 3.73 us, 3.79 us, 3.74 us
Run 28: warmup (20): 3.75 us, 3.86 us, 3.81 us, 3.79 us, 3.74 us, 3.75 us, 3.76 us, 3.78 us, 3.74 us, 3.77 us, 3.74 us, 3.73 us, 3.73 us, 3.76 us, 3.71 us, 3.76 us, 3.75 us, 3.74 us, 3.91 us, 3.79 us; samples (50): 3.73 us, 3.74 us, 3.78 us, 3.72 us, 5.63 us (+46%), 5.95 us (+54%), 5.32 us (+38%), 3.76 us, 3.77 us, 3.77 us, 3.75 us, 3.80 us, 3.77 us, 3.78 us, 3.75 us, 3.78 us, 3.75 us, 3.75 us, 3.73 us, 3.77 us, 3.72 us, 3.72 us, 3.77 us, 3.74 us, 3.74 us, 3.74 us, 3.85 us, 3.76 us, 3.77 us, 3.74 us, 3.73 us, 3.78 us, 3.76 us, 3.71 us, 3.73 us, 3.74 us, 3.74 us, 3.74 us, 3.75 us, 3.75 us, 3.76 us, 3.77 us, 3.77 us, 3.75 us, 3.77 us, 3.72 us, 3.74 us, 3.75 us, 3.81 us, 3.75 us
Run 29: warmup (20): 3.84 us, 3.90 us, 3.93 us, 3.96 us, 3.96 us, 3.91 us, 3.90 us, 3.87 us, 3.85 us, 3.88 us, 3.93 us, 3.89 us, 3.93 us, 3.91 us, 3.88 us, 3.90 us, 3.87 us, 3.87 us, 3.86 us, 3.92 us; samples (50): 3.90 us, 3.94 us, 4.89 us (+27%), 4.41 us (+14%), 3.90 us, 3.95 us, 3.85 us, 3.88 us, 3.91 us, 3.92 us, 3.90 us, 3.97 us, 4.18 us (+8%), 4.76 us (+23%), 3.93 us, 3.92 us, 3.92 us, 3.93 us, 3.85 us, 3.94 us, 3.91 us, 3.90 us, 3.94 us, 3.95 us, 3.99 us, 3.90 us, 3.90 us, 3.90 us, 3.84 us, 4.74 us (+23%), 4.12 us (+7%), 4.01 us, 3.88 us, 3.85 us, 3.87 us, 3.94 us, 3.88 us, 3.90 us, 3.88 us, 3.87 us, 3.87 us, 3.88 us, 3.86 us, 4.84 us (+25%), 3.92 us, 4.04 us, 3.94 us, 3.96 us, 3.90 us, 3.87 us
Run 30: warmup (20): 3.87 us, 3.85 us, 3.78 us, 3.74 us, 3.77 us, 3.78 us, 3.82 us, 3.85 us, 4.82 us (+25%), 4.43 us (+14%), 4.00 us, 3.90 us, 3.89 us, 3.86 us, 3.85 us, 3.88 us, 3.85 us, 3.85 us, 3.96 us, 3.87 us; samples (50): 3.89 us, 3.84 us, 3.86 us, 3.85 us, 4.14 us (+7%), 3.87 us, 3.77 us, 3.87 us, 3.87 us, 3.86 us, 3.85 us, 3.86 us, 3.88 us, 3.87 us, 3.83 us, 3.88 us, 3.90 us, 3.87 us, 3.85 us, 3.88 us, 4.01 us, 4.42 us (+14%), 6.62 us (+71%), 4.36 us (+13%), 3.92 us, 3.87 us, 3.89 us, 4.98 us (+29%), 4.65 us (+20%), 4.65 us (+20%), 4.43 us (+15%), 4.42 us (+14%), 4.76 us (+23%), 4.67 us (+21%), 3.89 us, 3.73 us, 3.69 us, 3.75 us, 4.62 us (+19%), 4.82 us (+25%), 3.83 us, 3.86 us, 3.77 us, 4.56 us (+18%), 3.76 us, 3.87 us, 3.84 us, 3.83 us, 4.00 us, 3.98 us
Run 31: warmup (20): 4.29 us (+11%), 4.05 us, 4.04 us, 4.67 us (+21%), 3.95 us, 3.95 us, 3.87 us, 3.88 us, 3.85 us, 3.83 us, 3.89 us, 4.09 us (+6%), 3.87 us, 3.86 us, 3.91 us, 3.86 us, 3.88 us, 3.86 us, 3.89 us, 3.84 us; samples (50): 3.87 us, 3.92 us, 3.84 us, 3.87 us, 3.84 us, 3.86 us, 3.84 us, 3.86 us, 3.81 us, 3.81 us, 5.09 us (+32%), 3.94 us, 3.83 us, 3.85 us, 3.89 us, 3.83 us, 3.90 us, 3.85 us, 3.89 us, 3.86 us, 3.85 us, 3.82 us, 3.86 us, 3.83 us, 3.82 us, 3.79 us, 3.79 us, 3.80 us, 3.89 us, 3.86 us, 3.85 us, 3.91 us, 3.84 us, 3.89 us, 3.80 us, 3.93 us, 4.03 us, 3.93 us, 3.92 us, 3.90 us, 3.90 us, 3.81 us, 3.83 us, 3.87 us, 3.81 us, 3.85 us, 3.93 us, 3.87 us, 3.82 us, 4.30 us (+11%)
Run 32: warmup (20): 3.90 us, 3.92 us, 3.94 us, 3.88 us, 3.88 us, 3.89 us, 3.82 us, 3.86 us, 3.89 us, 3.87 us, 3.85 us, 3.89 us, 3.86 us, 3.84 us, 3.82 us, 3.87 us, 3.86 us, 3.89 us, 3.87 us, 3.88 us; samples (50): 3.88 us, 3.88 us, 3.84 us, 3.89 us, 3.82 us, 3.89 us, 3.80 us, 3.92 us, 3.87 us, 3.88 us, 3.88 us, 3.88 us, 3.86 us, 3.90 us, 3.91 us, 3.88 us, 3.94 us, 3.95 us, 3.95 us, 3.92 us, 3.90 us, 3.87 us, 3.94 us, 3.88 us, 3.92 us, 3.87 us, 3.90 us, 3.95 us, 3.88 us, 3.87 us, 3.90 us, 3.89 us, 3.90 us, 3.84 us, 3.88 us, 3.89 us, 3.88 us, 3.87 us, 3.92 us, 3.88 us, 3.86 us, 3.83 us, 3.88 us, 3.85 us, 3.88 us, 3.88 us, 3.88 us, 3.85 us, 3.93 us, 3.85 us
Run 33: warmup (20): 4.10 us (+6%), 3.86 us, 3.90 us, 4.01 us, 4.02 us, 3.93 us, 5.40 us (+39%), 5.31 us (+37%), 4.17 us (+8%), 3.92 us, 3.88 us, 3.86 us, 3.90 us, 3.84 us, 3.87 us, 3.92 us, 3.88 us, 3.86 us, 3.92 us, 3.89 us; samples (50): 3.89 us, 4.87 us (+26%), 3.85 us, 3.90 us, 3.88 us, 3.88 us, 4.05 us, 4.26 us (+10%), 3.89 us, 3.88 us, 4.12 us (+6%), 4.51 us (+17%), 4.09 us (+6%), 4.77 us (+23%), 3.90 us, 3.88 us, 3.96 us, 3.98 us, 3.87 us, 3.90 us, 3.85 us, 3.97 us, 3.88 us, 3.84 us, 3.99 us, 3.85 us, 3.84 us, 4.96 us (+28%), 4.87 us (+26%), 3.91 us, 3.91 us, 4.16 us (+7%), 5.23 us (+35%), 3.86 us, 3.85 us, 4.39 us (+14%), 8.08 us (+109%), 5.39 us (+39%), 3.92 us, 4.30 us (+11%), 3.80 us, 3.89 us, 4.70 us (+21%), 4.49 us (+16%), 3.94 us, 3.81 us, 3.90 us, 4.17 us (+8%), 4.25 us (+10%), 3.82 us
Run 34: warmup (20): 3.92 us, 4.20 us (+9%), 4.29 us (+11%), 3.99 us, 4.03 us, 4.74 us (+23%), 3.92 us, 3.96 us, 3.94 us, 3.93 us, 3.97 us, 3.99 us, 3.92 us, 3.90 us, 3.88 us, 3.97 us, 3.92 us, 3.89 us, 3.89 us, 3.82 us; samples (50): 4.44 us (+15%), 4.44 us (+15%), 3.85 us, 3.83 us, 3.88 us, 3.90 us, 3.86 us, 3.87 us, 4.04 us, 4.63 us (+20%), 4.08 us (+6%), 3.89 us, 4.21 us (+9%), 4.33 us (+12%), 4.09 us (+6%), 4.32 us (+12%), 4.34 us (+12%), 4.05 us, 3.91 us, 4.13 us (+7%), 4.33 us (+12%), 4.07 us (+5%), 3.92 us, 3.91 us, 3.96 us, 3.94 us, 3.95 us, 3.98 us, 3.97 us, 3.97 us, 3.93 us, 3.91 us, 3.91 us, 3.90 us, 3.88 us, 3.96 us, 3.92 us, 3.87 us, 3.84 us, 3.88 us, 3.86 us, 3.92 us, 3.89 us, 3.90 us, 3.85 us, 3.84 us, 3.85 us, 3.93 us, 3.94 us, 3.90 us
Run 35: warmup (20): 3.78 us, 3.88 us, 3.89 us, 3.91 us, 3.91 us, 3.93 us, 3.91 us, 3.89 us, 3.87 us, 3.90 us, 3.90 us, 3.94 us, 3.89 us, 3.87 us, 3.87 us, 3.90 us, 3.93 us, 3.86 us, 3.88 us, 4.01 us; samples (50): 3.88 us, 3.81 us, 3.86 us, 3.87 us, 3.86 us, 3.85 us, 3.87 us, 3.86 us, 3.82 us, 3.81 us, 3.85 us, 3.84 us, 3.85 us, 3.84 us, 3.84 us, 3.88 us, 3.86 us, 3.89 us, 3.82 us, 3.84 us, 3.90 us, 3.82 us, 3.86 us, 3.84 us, 3.86 us, 3.85 us, 3.89 us, 3.85 us, 3.88 us, 3.85 us, 3.87 us, 3.87 us, 3.87 us, 3.83 us, 3.92 us, 3.89 us, 3.93 us, 3.84 us, 3.87 us, 3.90 us, 3.84 us, 3.83 us, 3.86 us, 3.91 us, 3.91 us, 3.86 us, 3.90 us, 3.86 us, 3.86 us, 3.81 us
Run 36: warmup (20): 3.89 us, 3.91 us, 3.96 us, 3.92 us, 3.99 us, 3.97 us, 3.93 us, 4.16 us (+8%), 4.41 us (+14%), 4.77 us (+23%), 3.91 us, 3.89 us, 3.87 us, 3.99 us, 3.92 us, 3.99 us, 3.95 us, 3.89 us, 3.90 us, 3.86 us; samples (50): 3.85 us, 3.90 us, 3.91 us, 3.89 us, 3.88 us, 3.91 us, 3.94 us, 3.93 us, 3.94 us, 3.90 us, 3.86 us, 3.93 us, 3.87 us, 3.90 us, 3.85 us, 3.93 us, 3.99 us, 4.00 us, 3.93 us, 3.95 us, 3.89 us, 3.86 us, 3.84 us, 3.87 us, 3.86 us, 3.89 us, 3.91 us, 3.87 us, 3.87 us, 3.89 us, 3.90 us, 3.92 us, 3.87 us, 3.89 us, 3.87 us, 3.92 us, 3.89 us, 3.87 us, 3.84 us, 3.86 us, 3.87 us, 4.33 us (+12%), 4.24 us (+10%), 4.34 us (+12%), 4.01 us, 3.85 us, 3.85 us, 4.16 us (+8%), 4.62 us (+20%), 4.54 us (+17%)
Run 37: warmup (20): 3.70 us, 3.88 us, 3.87 us, 3.90 us, 3.89 us, 3.87 us, 3.90 us, 4.10 us (+6%), 4.29 us (+11%), 3.88 us, 3.97 us, 3.87 us, 4.00 us, 4.04 us, 3.98 us, 3.95 us, 3.89 us, 3.90 us, 3.96 us, 3.91 us; samples (50): 3.90 us, 3.91 us, 3.85 us, 3.87 us, 3.87 us, 3.89 us, 3.97 us, 3.84 us, 3.98 us, 3.90 us, 3.91 us, 3.88 us, 3.84 us, 3.91 us, 3.98 us, 3.88 us, 3.91 us, 3.91 us, 3.93 us, 3.92 us, 3.91 us, 3.95 us, 3.93 us, 3.89 us, 3.88 us, 3.89 us, 3.90 us, 3.90 us, 3.90 us, 4.01 us, 3.88 us, 3.88 us, 3.80 us, 3.84 us, 3.83 us, 3.79 us, 3.80 us, 3.77 us, 3.77 us, 3.86 us, 3.76 us, 3.74 us, 3.76 us, 3.78 us, 3.75 us, 3.77 us, 3.75 us, 3.75 us, 3.74 us, 3.73 us
Run 38: warmup (20): 3.90 us, 3.98 us, 3.92 us, 4.00 us, 3.94 us, 4.30 us (+11%), 3.96 us, 4.00 us, 3.95 us, 4.11 us (+6%), 4.76 us (+23%), 4.50 us (+16%), 4.75 us (+23%), 4.53 us (+17%), 4.60 us (+19%), 4.75 us (+23%), 4.79 us (+24%), 4.57 us (+18%), 4.52 us (+17%), 4.45 us (+15%); samples (50): 4.47 us (+16%), 4.46 us (+15%), 4.88 us (+26%), 4.49 us (+16%), 4.54 us (+17%), 4.02 us, 3.96 us, 3.89 us, 4.07 us (+5%), 4.09 us (+6%), 4.06 us, 5.36 us (+38%), 3.91 us, 4.09 us (+6%), 4.45 us (+15%), 4.02 us, 3.90 us, 3.96 us, 3.90 us, 3.93 us, 4.37 us (+13%), 4.20 us (+8%), 4.24 us (+10%), 5.13 us (+33%), 5.43 us (+41%), 4.18 us (+8%), 4.01 us, 4.16 us (+7%), 3.96 us, 3.97 us, 3.91 us, 4.01 us, 4.00 us, 4.09 us (+6%), 4.01 us, 3.93 us, 3.97 us, 3.89 us, 3.91 us, 3.87 us, 3.91 us, 5.40 us (+40%), 6.18 us (+60%), 5.44 us (+41%), 3.94 us, 3.92 us, 3.84 us, 3.87 us, 3.86 us, 3.97 us
Run 39: warmup (20): 3.79 us, 3.80 us, 3.81 us, 3.78 us, 3.79 us, 4.32 us (+12%), 3.72 us, 3.72 us, 3.70 us, 3.72 us, 3.71 us, 3.74 us, 3.73 us, 3.75 us, 3.74 us, 3.76 us, 3.75 us, 3.80 us, 3.71 us, 3.75 us; samples (50): 3.73 us, 3.72 us, 3.72 us, 3.71 us, 3.75 us, 3.75 us, 3.74 us, 3.75 us, 3.78 us, 3.82 us, 3.78 us, 3.75 us, 3.78 us, 3.75 us, 3.82 us, 3.79 us, 3.78 us, 3.75 us, 3.74 us, 3.74 us, 3.72 us, 3.72 us, 3.76 us, 3.72 us, 3.73 us, 3.77 us, 3.74 us, 3.74 us, 3.77 us, 3.75 us, 3.78 us, 3.75 us, 3.72 us, 3.72 us, 3.75 us, 3.76 us, 3.72 us, 3.72 us, 3.76 us, 3.78 us, 3.74 us, 3.78 us, 3.73 us, 3.72 us, 3.78 us, 3.75 us, 3.84 us, 4.90 us (+27%), 4.40 us (+14%), 3.85 us
Run 40: warmup (20): 3.82 us, 3.99 us, 3.71 us, 3.72 us, 3.73 us, 3.75 us, 3.78 us, 3.71 us, 3.66 us (-5%), 3.72 us, 3.69 us, 3.72 us, 3.69 us, 3.71 us, 3.66 us (-5%), 3.69 us, 3.68 us, 3.68 us, 3.71 us, 3.74 us; samples (50): 3.70 us, 3.73 us, 3.71 us, 3.75 us, 3.73 us, 3.67 us (-5%), 4.49 us (+16%), 3.82 us, 3.82 us, 3.81 us, 3.76 us, 3.79 us, 3.78 us, 3.80 us, 3.83 us, 3.82 us, 3.77 us, 3.99 us, 3.77 us, 3.79 us, 3.74 us, 3.84 us, 3.78 us, 3.78 us, 3.75 us, 3.88 us, 4.18 us (+8%), 3.86 us, 3.74 us, 3.76 us, 3.80 us, 3.79 us, 3.80 us, 3.74 us, 3.75 us, 3.70 us, 3.73 us, 3.77 us, 4.63 us (+20%), 4.16 us (+8%), 4.01 us, 3.82 us, 3.75 us, 3.78 us, 4.26 us (+10%), 4.33 us (+12%), 3.81 us, 3.82 us, 3.83 us, 3.76 us

3.42 us:   10 #
3.66 us: 1165 #################################################################
3.90 us:  440 #########################
4.15 us:  140 ########
4.39 us:   66 ####
4.64 us:   34 ##
4.88 us:   37 ##
5.12 us:   20 #
5.37 us:   17 #
5.61 us:    6 |
5.86 us:   18 #
6.10 us:   14 #
6.34 us:   11 #
6.59 us:   13 #
6.83 us:    2 |
7.08 us:    0 |
7.32 us:    2 |
7.56 us:    1 |
7.81 us:    0 |
8.05 us:    2 |
8.29 us:    2 |

WARNING: the benchmark seems unstable, the standard deviation is high (stdev/median: 15%)
Try to rerun the benchmark with more runs, samples and/or loops

Median +- std dev: 3.87 us +- 0.57 us

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I didn't mean a single top-level set-item was really an issue. rather IIRC the low-level routine that actaully sets a single value is being called in-cython multiple times.

@jreback jreback added the Indexing Related to indexing on series/frames, not to indexes themselves label Oct 6, 2016
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codecov-io commented Oct 6, 2016 •
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Current coverage is 85.25% (diff: 100%)

Merging #14359 into master will not change coverage

@@             master     #14359   diff @@
==========================================
  Files           140        140          
  Lines         50655      50655          
  Methods           0          0          
  Messages          0          0          
  Branches          0          0          
==========================================
  Hits          43185      43185          
  Misses         7470       7470          
  Partials          0          0

Powered by Codecov. Last update 233d51d...9925327

jreback
jreback reviewed Oct 7, 2016
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doc/source/whatsnew/v0.19.1
@@ -0,0 +1,84 @@
.. _whatsnew_0191:
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@jreback jreback Oct 7, 2016 •
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pls remove this is already done

jreback
jreback reviewed Oct 7, 2016
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pandas/core/common.py
"""
Evaluate possibly callable input using obj and kwargs if it is callable,
otherwise return as it is
"""
if callable(maybe_callable):
if __callable(maybe_callable):
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? this is obfuscuating

jreback
jreback reviewed Oct 7, 2016
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pandas/core/series.py
@@ -711,67 +711,69 @@ def _get_values(self, indexer):
except Exception:
return self._values[indexer]

def __setitem__(self, key, value):
key = com._apply_if_callable(key, self)
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why do you need to do it this way? this makes things even more complicated

@jreback jreback mentioned this pull request Oct 7, 2016
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@llllllllll
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Sorry about the misunderstanding around setitem vs the inner function. I will undo the micro optimizations in python and create a safe/unsafe version of the cython function. The places where we are doing things in a loop can do a check once and delegate to the unsafe version where the spot calls can use the checked version.

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rebased to fix conflict in whatsnew

jreback
jreback reviewed Oct 24, 2016
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pandas/lib.pyx
@@ -997,7 +1001,9 @@ cpdef ndarray[object] astype_str(ndarray arr):
ndarray[object] result = np.empty(n, dtype=object)

for i in range(n):
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this should simply be checked once for the array (and don't call the unsafe function)

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We don't need an explicit check because we created this array with np.empty so it is mutable. The unsafe version of the function is the one that doesn't do the writeable check so this does what you describe unless I am missing something.

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right, I read them backwards.....ok

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so perf basically the same then for non-readonly arrays?

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On this line, it is always readonly. The only places where we call this in a loop are with known writeable arrays created by empty. In those cases we are going through the exact same code path as before, the function was just renamed to set_value_at_unsafe. In the other case, we were only doing scalar assignments so there was no looping. Those pay a very slight penalty to check the flags but in almost all cases it will return true. Also the main cost of that is dereferencing the array object but we do that in the expected case anyways.

jreback
jreback reviewed Oct 24, 2016
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pandas/lib.pyx
@@ -986,7 +988,9 @@ cpdef ndarray[object] astype_unicode(ndarray arr):
ndarray[object] result = np.empty(n, dtype=object)

for i in range(n):
util.set_value_at(result, i, unicode(arr[i]))
# we can use the unsafe version because we know `result` is mutable
# since it was created from `np.empty`
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same here (and anywhere there is a range)

@jreback jreback added this to the 0.19.1 milestone Oct 24, 2016
@jreback jreback closed this in 5cf6d94 Oct 24, 2016
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jreback commented Oct 24, 2016

thanks!

maybe make an issue on pandas2 repo about this (IIRC you made a comment already), so that this is not forgotton.

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Thank you! I think this is not an issue in pandas2 because series is backed with a pandas.Array instead of an ndarray.

jorisvandenbossche pushed a commit to jorisvandenbossche/pandas that referenced this pull request Nov 2, 2016
@jorisvandenbossche
[Backport pandas-dev#14359] BUG: block mutation of read-only array in…
4419907 
… series

Author: Joe Jevnik <[email protected]>

Closes pandas-dev#14359 from llllllllll/series-setitem and squashes the following commits:

9925327 [Joe Jevnik] BUG: fix a bug in Series.__setitem__ that allowed the mutatation of read-only arrays

(cherry picked from commit 5cf6d94)
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Indexing Related to indexing on series/frames, not to indexes themselves
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