Simplify the last-value aggregate#4343
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Additional details and impacted files@@ Coverage Diff @@
## main #4343 +/- ##
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Coverage 83.4% 83.4%
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Files 184 184
Lines 14349 14360 +11
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+ Hits 11975 11988 +13
+ Misses 2147 2145 -2
Partials 227 227
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Instead of treating the returned *lastValue as an aggregator from newLastValue, just use the type directly to construct the Measure and ComputeAggregation functions returned from the Builder. Accept a destination type for the underlying computeAggregation. This allows memory reuse for collections which adds a considerable optimization. Simplify the integration testing of the last-value aggregate. Update benchmarking.
MrAlias
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dashpole,
dmathieu,
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MrAlias
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pellared
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Jul 20, 2023
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Jul 20, 2023
Co-authored-by: Robert Pająk <pellared@hotmail.com>
pellared
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Jul 20, 2023
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Part of #4220
Instead of treating the returned *lastValue as an aggregator from newLastValue, just use the type directly to construct the Measure and ComputeAggregation functions returned from the Builder.
Accept a destination type for the underlying computeAggregation. This allows memory reuse for collections which adds a considerable optimization.
Simplify the integration testing of the last-value aggregate.
Update benchmarking.
Benchmarking
Measure
goos: linux goarch: amd64 pkg: go.opentelemetry.io/otel/sdk/metric/internal/aggregate cpu: Intel(R) Core(TM) i7-8550U CPU @ 1.80GHz │ old.txt │ new.txt │ │ sec/op │ sec/op vs base │ LastValue/Int64/1/Measure-8 137.6n ± 1% 148.3n ± 4% +7.82% (p=0.000 n=10) LastValue/Int64/10/Measure-8 1.689µ ± 4% 1.686µ ± 3% ~ (p=0.631 n=10) LastValue/Int64/100/Measure-8 16.41µ ± 5% 17.31µ ± 2% +5.47% (p=0.002 n=10) LastValue/Float64/1/Measure-8 150.4n ± 4% 150.8n ± 5% ~ (p=0.853 n=10) LastValue/Float64/10/Measure-8 1.731µ ± 6% 1.770µ ± 3% ~ (p=0.383 n=10) LastValue/Float64/100/Measure-8 16.87µ ± 6% 16.89µ ± 5% ~ (p=1.000 n=10) geomean 1.599µ 1.641µ +2.59% │ old.txt │ new.txt │ │ B/op │ B/op vs base │ LastValue/Int64/1/Measure-8 0.000 ± 0% 0.000 ± 0% ~ (p=1.000 n=10) ¹ LastValue/Int64/10/Measure-8 0.000 ± 0% 0.000 ± 0% ~ (p=1.000 n=10) ¹ LastValue/Int64/100/Measure-8 0.000 ± 0% 0.000 ± 0% ~ (p=1.000 n=10) ¹ LastValue/Float64/1/Measure-8 0.000 ± 0% 0.000 ± 0% ~ (p=1.000 n=10) ¹ LastValue/Float64/10/Measure-8 0.000 ± 0% 0.000 ± 0% ~ (p=1.000 n=10) ¹ LastValue/Float64/100/Measure-8 0.000 ± 0% 0.000 ± 0% ~ (p=1.000 n=10) ¹ geomean ² +0.00% ² ¹ all samples are equal ² summaries must be >0 to compute geomean │ old.txt │ new.txt │ │ allocs/op │ allocs/op vs base │ LastValue/Int64/1/Measure-8 0.000 ± 0% 0.000 ± 0% ~ (p=1.000 n=10) ¹ LastValue/Int64/10/Measure-8 0.000 ± 0% 0.000 ± 0% ~ (p=1.000 n=10) ¹ LastValue/Int64/100/Measure-8 0.000 ± 0% 0.000 ± 0% ~ (p=1.000 n=10) ¹ LastValue/Float64/1/Measure-8 0.000 ± 0% 0.000 ± 0% ~ (p=1.000 n=10) ¹ LastValue/Float64/10/Measure-8 0.000 ± 0% 0.000 ± 0% ~ (p=1.000 n=10) ¹ LastValue/Float64/100/Measure-8 0.000 ± 0% 0.000 ± 0% ~ (p=1.000 n=10) ¹ geomean ² +0.00% ² ¹ all samples are equal ² summaries must be >0 to compute geomeanComputeAggregation
goos: linux goarch: amd64 pkg: go.opentelemetry.io/otel/sdk/metric/internal/aggregate cpu: Intel(R) Core(TM) i7-8550U CPU @ 1.80GHz │ old.txt │ new.txt │ │ sec/op │ sec/op vs base │ LastValue/Int64/1/ComputeAggregation-8 387.0n ± 10% 269.0n ± 5% -30.49% (p=0.000 n=10) LastValue/Int64/10/ComputeAggregation-8 2.278µ ± 3% 1.657µ ± 6% -27.28% (p=0.000 n=10) LastValue/Int64/100/ComputeAggregation-8 19.79µ ± 3% 15.38µ ± 2% -22.27% (p=0.000 n=10) LastValue/Float64/1/ComputeAggregation-8 413.6n ± 10% 283.5n ± 6% -31.46% (p=0.000 n=10) LastValue/Float64/10/ComputeAggregation-8 2.325µ ± 7% 1.661µ ± 6% -28.56% (p=0.000 n=10) LastValue/Float64/100/ComputeAggregation-8 20.12µ ± 5% 15.39µ ± 5% -23.53% (p=0.000 n=10) geomean 2.639µ 1.917µ -27.34% │ old.txt │ new.txt │ │ B/op │ B/op vs base │ LastValue/Int64/1/ComputeAggregation-8 120.00 ± 0% 24.00 ± 0% -80.00% (p=0.000 n=10) LastValue/Int64/10/ComputeAggregation-8 1048.00 ± 0% 24.00 ± 0% -97.71% (p=0.000 n=10) LastValue/Int64/100/ComputeAggregation-8 9752.00 ± 0% 24.00 ± 0% -99.75% (p=0.000 n=10) LastValue/Float64/1/ComputeAggregation-8 120.00 ± 0% 24.00 ± 0% -80.00% (p=0.000 n=10) LastValue/Float64/10/ComputeAggregation-8 1048.00 ± 0% 24.00 ± 0% -97.71% (p=0.000 n=10) LastValue/Float64/100/ComputeAggregation-8 9752.00 ± 0% 24.00 ± 0% -99.75% (p=0.000 n=10) geomean 1.045Ki 24.00 -97.76% │ old.txt │ new.txt │ │ allocs/op │ allocs/op vs base │ LastValue/Int64/1/ComputeAggregation-8 2.000 ± 0% 1.000 ± 0% -50.00% (p=0.000 n=10) LastValue/Int64/10/ComputeAggregation-8 2.000 ± 0% 1.000 ± 0% -50.00% (p=0.000 n=10) LastValue/Int64/100/ComputeAggregation-8 2.000 ± 0% 1.000 ± 0% -50.00% (p=0.000 n=10) LastValue/Float64/1/ComputeAggregation-8 2.000 ± 0% 1.000 ± 0% -50.00% (p=0.000 n=10) LastValue/Float64/10/ComputeAggregation-8 2.000 ± 0% 1.000 ± 0% -50.00% (p=0.000 n=10) LastValue/Float64/100/ComputeAggregation-8 2.000 ± 0% 1.000 ± 0% -50.00% (p=0.000 n=10) geomean 2.000 1.000 -50.00%