Remove boxed primitives from aggregations

[jack-berg]

In #5178 I noticed allocations for boxing / unboxing primitives in the exponential and explicit bucket histogram aggregations. This removes those for modest performance improvement.

Before:

Benchmark                                                                            (aggregationGenerator)  (aggregationTemporality)  Mode  Cnt           Score           Error   Units
HistogramCollectBenchmark.recordAndCollect                                        EXPLICIT_BUCKET_HISTOGRAM                     DELTA    ss    5  3390255558.400 ±  29491981.021   ns/op
HistogramCollectBenchmark.recordAndCollect:·gc.alloc.rate                         EXPLICIT_BUCKET_HISTOGRAM                     DELTA    ss    5           3.007 ±         0.020  MB/sec
HistogramCollectBenchmark.recordAndCollect:·gc.alloc.rate.norm                    EXPLICIT_BUCKET_HISTOGRAM                     DELTA    ss    5    10689731.200 ±     36579.743    B/op
HistogramCollectBenchmark.recordAndCollect:·gc.count                              EXPLICIT_BUCKET_HISTOGRAM                     DELTA    ss    5           1.000                  counts
HistogramCollectBenchmark.recordAndCollect:·gc.time                               EXPLICIT_BUCKET_HISTOGRAM                     DELTA    ss    5           2.000                      ms
HistogramCollectBenchmark.recordAndCollect                                        EXPLICIT_BUCKET_HISTOGRAM                CUMULATIVE    ss    5  3436534566.600 ± 102736943.608   ns/op
HistogramCollectBenchmark.recordAndCollect:·gc.alloc.rate                         EXPLICIT_BUCKET_HISTOGRAM                CUMULATIVE    ss    5           3.202 ±         0.199  MB/sec
HistogramCollectBenchmark.recordAndCollect:·gc.alloc.rate.norm                    EXPLICIT_BUCKET_HISTOGRAM                CUMULATIVE    ss    5    11536620.800 ±    526953.810    B/op
HistogramCollectBenchmark.recordAndCollect:·gc.count                              EXPLICIT_BUCKET_HISTOGRAM                CUMULATIVE    ss    5           1.000                  counts
HistogramCollectBenchmark.recordAndCollect:·gc.time                               EXPLICIT_BUCKET_HISTOGRAM                CUMULATIVE    ss    5           3.000                      ms
HistogramCollectBenchmark.recordAndCollect                             DEFAULT_EXPONENTIAL_BUCKET_HISTOGRAM                     DELTA    ss    5  9538995141.800 ±  95720490.562   ns/op
HistogramCollectBenchmark.recordAndCollect:·gc.alloc.rate              DEFAULT_EXPONENTIAL_BUCKET_HISTOGRAM                     DELTA    ss    5           0.636 ±         0.030  MB/sec
HistogramCollectBenchmark.recordAndCollect:·gc.alloc.rate.norm         DEFAULT_EXPONENTIAL_BUCKET_HISTOGRAM                     DELTA    ss    5     6363548.800 ±    305261.174    B/op
HistogramCollectBenchmark.recordAndCollect:·gc.count                   DEFAULT_EXPONENTIAL_BUCKET_HISTOGRAM                     DELTA    ss    5             ≈ 0                  counts
HistogramCollectBenchmark.recordAndCollect                             DEFAULT_EXPONENTIAL_BUCKET_HISTOGRAM                CUMULATIVE    ss    5  9042829725.000 ± 169838553.573   ns/op
HistogramCollectBenchmark.recordAndCollect:·gc.alloc.rate              DEFAULT_EXPONENTIAL_BUCKET_HISTOGRAM                CUMULATIVE    ss    5           0.933 ±         0.068  MB/sec
HistogramCollectBenchmark.recordAndCollect:·gc.alloc.rate.norm         DEFAULT_EXPONENTIAL_BUCKET_HISTOGRAM                CUMULATIVE    ss    5     8849014.400 ±    654075.369    B/op
HistogramCollectBenchmark.recordAndCollect:·gc.count                   DEFAULT_EXPONENTIAL_BUCKET_HISTOGRAM                CUMULATIVE    ss    5           1.000                  counts
HistogramCollectBenchmark.recordAndCollect:·gc.time                    DEFAULT_EXPONENTIAL_BUCKET_HISTOGRAM                CUMULATIVE    ss    5           1.000                      ms
HistogramCollectBenchmark.recordAndCollect                      ZERO_MAX_SCALE_EXPONENTIAL_BUCKET_HISTOGRAM                     DELTA    ss    5  2616061300.000 ±  67260283.355   ns/op
HistogramCollectBenchmark.recordAndCollect:·gc.alloc.rate       ZERO_MAX_SCALE_EXPONENTIAL_BUCKET_HISTOGRAM                     DELTA    ss    5           2.391 ±         0.104  MB/sec
HistogramCollectBenchmark.recordAndCollect:·gc.alloc.rate.norm  ZERO_MAX_SCALE_EXPONENTIAL_BUCKET_HISTOGRAM                     DELTA    ss    5     6559592.000 ±    284720.892    B/op
HistogramCollectBenchmark.recordAndCollect:·gc.count            ZERO_MAX_SCALE_EXPONENTIAL_BUCKET_HISTOGRAM                     DELTA    ss    5             ≈ 0                  counts
HistogramCollectBenchmark.recordAndCollect                      ZERO_MAX_SCALE_EXPONENTIAL_BUCKET_HISTOGRAM                CUMULATIVE    ss    5  2624043408.200 ±  48730935.089   ns/op
HistogramCollectBenchmark.recordAndCollect:·gc.alloc.rate       ZERO_MAX_SCALE_EXPONENTIAL_BUCKET_HISTOGRAM                CUMULATIVE    ss    5           3.420 ±         0.167  MB/sec
HistogramCollectBenchmark.recordAndCollect:·gc.alloc.rate.norm  ZERO_MAX_SCALE_EXPONENTIAL_BUCKET_HISTOGRAM                CUMULATIVE    ss    5     9411476.800 ±    308800.163    B/op
HistogramCollectBenchmark.recordAndCollect:·gc.count            ZERO_MAX_SCALE_EXPONENTIAL_BUCKET_HISTOGRAM                CUMULATIVE    ss    5           1.000                  counts
HistogramCollectBenchmark.recordAndCollect:·gc.time             ZERO_MAX_SCALE_EXPONENTIAL_BUCKET_HISTOGRAM                CUMULATIVE    ss    5           1.000                      ms

After:

Benchmark                                                                                  (aggregationGenerator)  (aggregationTemporality)  Mode  Cnt           Score           Error   Units
HistogramCollectBenchmark.recordAndCollect                                              EXPLICIT_BUCKET_HISTOGRAM                     DELTA    ss    5  3461289016.800 ± 207765909.326   ns/op
HistogramCollectBenchmark.recordAndCollect:·gc.alloc.rate                               EXPLICIT_BUCKET_HISTOGRAM                     DELTA    ss    5           2.759 ±         0.168  MB/sec
HistogramCollectBenchmark.recordAndCollect:·gc.alloc.rate.norm                          EXPLICIT_BUCKET_HISTOGRAM                     DELTA    ss    5    10010963.200 ±     37770.109    B/op
HistogramCollectBenchmark.recordAndCollect:·gc.count                                    EXPLICIT_BUCKET_HISTOGRAM                     DELTA    ss    5           1.000                  counts
HistogramCollectBenchmark.recordAndCollect:·gc.time                                     EXPLICIT_BUCKET_HISTOGRAM                     DELTA    ss    5           2.000                      ms
HistogramCollectBenchmark.recordAndCollect                                              EXPLICIT_BUCKET_HISTOGRAM                CUMULATIVE    ss    5  3443194525.200 ±  51746699.440   ns/op
HistogramCollectBenchmark.recordAndCollect:·gc.alloc.rate                               EXPLICIT_BUCKET_HISTOGRAM                CUMULATIVE    ss    5           3.034 ±         0.128  MB/sec
HistogramCollectBenchmark.recordAndCollect:·gc.alloc.rate.norm                          EXPLICIT_BUCKET_HISTOGRAM                CUMULATIVE    ss    5    10956763.200 ±    513597.377    B/op
HistogramCollectBenchmark.recordAndCollect:·gc.count                                    EXPLICIT_BUCKET_HISTOGRAM                CUMULATIVE    ss    5           1.000                  counts
HistogramCollectBenchmark.recordAndCollect:·gc.time                                     EXPLICIT_BUCKET_HISTOGRAM                CUMULATIVE    ss    5           1.000                      ms
HistogramCollectBenchmark.recordAndCollect                             DEFAULT_BASE2_EXPONENTIAL_BUCKET_HISTOGRAM                     DELTA    ss    5  9458527550.000 ± 170497488.996   ns/op
HistogramCollectBenchmark.recordAndCollect:·gc.alloc.rate              DEFAULT_BASE2_EXPONENTIAL_BUCKET_HISTOGRAM                     DELTA    ss    5           0.671 ±         0.015  MB/sec
HistogramCollectBenchmark.recordAndCollect:·gc.alloc.rate.norm         DEFAULT_BASE2_EXPONENTIAL_BUCKET_HISTOGRAM                     DELTA    ss    5     6654689.600 ±     37502.937    B/op
HistogramCollectBenchmark.recordAndCollect:·gc.count                   DEFAULT_BASE2_EXPONENTIAL_BUCKET_HISTOGRAM                     DELTA    ss    5             ≈ 0                  counts
HistogramCollectBenchmark.recordAndCollect                             DEFAULT_BASE2_EXPONENTIAL_BUCKET_HISTOGRAM                CUMULATIVE    ss    5  9090781224.800 ±  61234816.395   ns/op
HistogramCollectBenchmark.recordAndCollect:·gc.alloc.rate              DEFAULT_BASE2_EXPONENTIAL_BUCKET_HISTOGRAM                CUMULATIVE    ss    5           0.925 ±         0.097  MB/sec
HistogramCollectBenchmark.recordAndCollect:·gc.alloc.rate.norm         DEFAULT_BASE2_EXPONENTIAL_BUCKET_HISTOGRAM                CUMULATIVE    ss    5     8814665.600 ±    942971.029    B/op
HistogramCollectBenchmark.recordAndCollect:·gc.count                   DEFAULT_BASE2_EXPONENTIAL_BUCKET_HISTOGRAM                CUMULATIVE    ss    5           1.000                  counts
HistogramCollectBenchmark.recordAndCollect:·gc.time                    DEFAULT_BASE2_EXPONENTIAL_BUCKET_HISTOGRAM                CUMULATIVE    ss    5           3.000                      ms
HistogramCollectBenchmark.recordAndCollect                      ZERO_MAX_SCALE_BASE2_EXPONENTIAL_BUCKET_HISTOGRAM                     DELTA    ss    5  2570711000.000 ± 110162829.176   ns/op
HistogramCollectBenchmark.recordAndCollect:·gc.alloc.rate       ZERO_MAX_SCALE_BASE2_EXPONENTIAL_BUCKET_HISTOGRAM                     DELTA    ss    5           2.469 ±         0.107  MB/sec
HistogramCollectBenchmark.recordAndCollect:·gc.alloc.rate.norm  ZERO_MAX_SCALE_BASE2_EXPONENTIAL_BUCKET_HISTOGRAM                     DELTA    ss    5     6654652.800 ±     37585.400    B/op
HistogramCollectBenchmark.recordAndCollect:·gc.count            ZERO_MAX_SCALE_BASE2_EXPONENTIAL_BUCKET_HISTOGRAM                     DELTA    ss    5             ≈ 0                  counts
HistogramCollectBenchmark.recordAndCollect                      ZERO_MAX_SCALE_BASE2_EXPONENTIAL_BUCKET_HISTOGRAM                CUMULATIVE    ss    5  2660751041.800 ±  59159354.485   ns/op
HistogramCollectBenchmark.recordAndCollect:·gc.alloc.rate       ZERO_MAX_SCALE_BASE2_EXPONENTIAL_BUCKET_HISTOGRAM                CUMULATIVE    ss    5           3.195 ±         0.103  MB/sec
HistogramCollectBenchmark.recordAndCollect:·gc.alloc.rate.norm  ZERO_MAX_SCALE_BASE2_EXPONENTIAL_BUCKET_HISTOGRAM                CUMULATIVE    ss    5     8914393.600 ±    173088.998    B/op
HistogramCollectBenchmark.recordAndCollect:·gc.count            ZERO_MAX_SCALE_BASE2_EXPONENTIAL_BUCKET_HISTOGRAM                CUMULATIVE    ss    5           1.000                  counts
HistogramCollectBenchmark.recordAndCollect:·gc.time             ZERO_MAX_SCALE_BASE2_EXPONENTIAL_BUCKET_HISTOGRAM                CUMULATIVE    ss    5           1.000                      ms

[codecov]

Codecov Report

Base: 91.07% // Head: 91.07% // Increases project coverage by +0.00% 🎉

Coverage data is based on head (9b27666) compared to base (feb0297).
Patch has no changes to coverable lines.

Additional details and impacted files

@@            Coverage Diff            @@
##               main    #5184   +/-   ##
=========================================
  Coverage     91.07%   91.07%           
+ Complexity     4868     4861    -7     
=========================================
  Files           548      548           
  Lines         14373    14365    -8     
  Branches       1378     1370    -8     
=========================================
- Hits          13090    13083    -7     
  Misses          891      891           
+ Partials        392      391    -1     

Impacted Files	Coverage Δ
...opencensusshim/internal/metrics/MetricAdapter.java	89.24% <ø> (ø)
...tor/DoubleBase2ExponentialHistogramAggregator.java	98.63% <ø> (-0.04%)	⬇️
...gator/DoubleExplicitBucketHistogramAggregator.java	97.87% <ø> (+1.95%)	⬆️
...l/data/ImmutableExponentialHistogramPointData.java	100.00% <ø> (ø)
...ics/internal/data/ImmutableHistogramPointData.java	95.45% <ø> (-0.38%)	⬇️
...telemetry/sdk/trace/export/BatchSpanProcessor.java	94.48% <0.00%> (-0.69%)	⬇️
...ava/io/opentelemetry/sdk/internal/RateLimiter.java	100.00% <0.00%> (+5.88%)	⬆️

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