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uftrace for RustPython
Anton-4 edited this page Oct 2, 2024
·
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This document is written by MinJeong Kim.
$ git clone --depth=1 https://github.com/RustPython/RustPython
$ cd RustPython
Make sure export PATH="$HOME/.cargo/bin:$PATH"
is added to your environment variables.
$ curl https://sh.rustup.rs/ -sSf | sh
$ source $HOME/.cargo/env
Nightly compiler is required for using -Z flag options.
$ rustup install nightly
$ rustup default nightly
$ export RUSTFLAGS="-Z instrument-mcount -C passes=ee-instrument<post-inline>"
$ cargo build
$ nm ./target/debug/rustpython | grep mcount
U mcount@@GLIBC_2.2.5
More readable calling convention is needed to trace a specific function. rustfilt
could pipe to stdout using grep
or less
.
$ cargo install rustfilt
$ nm ./target/debug/rustpython | rustfilt
$ uftrace -F rustpython_vm::obj::objrange::PyRange::getitem -D 2 ./target/debug/rustpython -c 'range(10)[0:5]'
# DURATION TID FUNCTION
[ 10285] | rustpython_vm::obj::objrange::PyRange::getitem() {
5.697 us [ 10285] | rustpython_vm::obj::objslice::_<impl rustpython_vm..pyobject..PyRef<rustpyth
0.127 us [ 10285] | _<core..result..Result<T,E> as core..ops..try..Try>::into_result();
20.885 us [ 10285] | rustpython_vm::obj::objrange::PyRange::get();
0.139 us [ 10285] | rustpython_vm::obj::objint::PyInt::new();
1.971 us [ 10285] | rustpython_vm::pyobject::PyValue::into_ref();
0.332 us [ 10285] | core::ptr::real_drop_in_place();
2.709 us [ 10285] | rustpython_vm::obj::objslice::_<impl rustpython_vm..pyobject..PyRef<rustpyth
0.094 us [ 10285] | _<core..result..Result<T,E> as core..ops..try..Try>::into_result();
18.016 us [ 10285] | rustpython_vm::obj::objrange::PyRange::get();
0.114 us [ 10285] | rustpython_vm::obj::objint::PyInt::new();
3.267 us [ 10285] | rustpython_vm::pyobject::PyValue::into_ref();
0.659 us [ 10285] | core::ptr::real_drop_in_place();
0.672 us [ 10285] | rustpython_vm::obj::objslice::_<impl rustpython_vm..pyobject..PyRef<rustpyth
0.094 us [ 10285] | _<core..result..Result<T,E> as core..ops..try..Try>::into_result();
0.494 us [ 10285] | _<rustpython_vm..pyobject..PyRef<T> as core..clone..Clone>::clone();
0.038 us [ 10285] | core::ptr::real_drop_in_place();
1.695 us [ 10285] | rustpython_vm::pyobject::PyValue::into_ref();
0.041 us [ 10285] | rustpython_vm::pyobject::PyRef<T>::into_object();
0.533 us [ 10285] | core::ptr::real_drop_in_place();
62.415 us [ 10285] | } /* rustpython_vm::obj::objrange::PyRange::getitem */
$ uftrace record -F rustpython_vm::obj::objrange::PyRange::getitem -D 2 ./target/debug/rustpython -c 'range(10)[0:5]'
$ uftrace replay
# DURATION TID FUNCTION
[ 10304] | rustpython_vm::obj::objrange::PyRange::getitem() {
...
Graph :
$ uftrace graph
# Function Call Graph for 'rustpython' (session: 20cd9b6b768a352d)
========== FUNCTION CALL GRAPH ==========
# TOTAL TIME FUNCTION
58.425 us : (1) rustpython
58.425 us : (1) rustpython_vm::obj::objrange::PyRange::getitem
4.933 us : +-(1) rustpython_vm::obj::objslice::_<impl rustpython_vm..pyobject..PyRef<rustpython_vm..obj
: |
0.298 us : +-(3) _<core..result..Result<T,E> as core..ops..try..Try>::into_result
: |
37.394 us : +-(2) rustpython_vm::obj::objrange::PyRange::get
: |
0.258 us : +-(2) rustpython_vm::obj::objint::PyInt::new
: |
5.669 us : +-(3) rustpython_vm::pyobject::PyValue::into_ref
: |
1.637 us : +-(4) core::ptr::real_drop_in_place
: |
2.708 us : +-(1) rustpython_vm::obj::objslice::_<impl rustpython_vm..pyobject..PyRef<rustpython_vm..obj
: |
0.624 us : +-(1) rustpython_vm::obj::objslice::_<impl rustpython_vm..pyobject..PyRef<rustpython_vm..obj
: |
0.501 us : +-(1) _<rustpython_vm..pyobject..PyRef<T> as core..clone..Clone>::clone
: |
0.041 us : +-(1) rustpython_vm::pyobject::PyRef<T>::into_object
Chrome :
$ uftrace record -t 5ms ./target/debug/rustpython -c 'range(10)[0:5]'
$ uftrace dump --chrome > uftrace-dump-rustpython.json
$ trace2html uftrace-dump-rustpython.json
Flame-Graph :
$ uftrace record -t 5ms ./target/debug/rustpython -c 'range(10)[0:5]'
$ uftrace dump --flame-graph | ./flamegraph.pl > uftrace-dump-rustpython.svg
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