prometheus: use a sync.Pool instead of allocating metricdata.ResourceMetrics in Collect#6472
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pellared merged 11 commits intoopen-telemetry:mainfrom Mar 20, 2025
Merged
prometheus: use a sync.Pool instead of allocating metricdata.ResourceMetrics in Collect#6472pellared merged 11 commits intoopen-telemetry:mainfrom
pellared merged 11 commits intoopen-telemetry:mainfrom
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Codecov ReportAll modified and coverable lines are covered by tests ✅
Additional details and impacted files@@ Coverage Diff @@
## main #6472 +/- ##
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Coverage 81.8% 81.8%
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Files 283 283
Lines 24910 24913 +3
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+ Hits 20384 20387 +3
Misses 4121 4121
Partials 405 405 🚀 New features to boost your workflow:
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# Overview Closes #6786 ### Added - Add exponential histogram support in `go.opentelemetry.io/otel/exporters/prometheus`. (#6421) - The `go.opentelemetry.io/otel/semconv/v1.31.0` package. The package contains semantic conventions from the `v1.31.0` version of the OpenTelemetry Semantic Conventions. See the [migration documentation](./semconv/v1.31.0/MIGRATION.md) for information on how to upgrade from `go.opentelemetry.io/otel/semconv/v1.30.0`. (#6479) - Add `Recording`, `Scope`, and `Record` types in `go.opentelemetry.io/otel/log/logtest`. (#6507) - Add `WithHTTPClient` option to configure the `http.Client` used by `go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp`. (#6751) - Add `WithHTTPClient` option to configure the `http.Client` used by `go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetrichttp`. (#6752) - Add `WithHTTPClient` option to configure the `http.Client` used by `go.opentelemetry.io/otel/exporters/otlp/otlplog/otlploghttp`. (#6688) - Add `ValuesGetter` in `go.opentelemetry.io/otel/propagation`, a `TextMapCarrier` that supports retrieving multiple values for a single key. (#5973) - Add `Values` method to `HeaderCarrier` to implement the new `ValuesGetter` interface in `go.opentelemetry.io/otel/propagation`. (#5973) - Update `Baggage` in `go.opentelemetry.io/otel/propagation` to retrieve multiple values for a key when the carrier implements `ValuesGetter`. (#5973) - Add `AssertEqual` function in `go.opentelemetry.io/otel/log/logtest`. (#6662) - The `go.opentelemetry.io/otel/semconv/v1.32.0` package. The package contains semantic conventions from the `v1.32.0` version of the OpenTelemetry Semantic Conventions. See the [migration documentation](./semconv/v1.32.0/MIGRATION.md) for information on how to upgrade from `go.opentelemetry.io/otel/semconv/v1.31.0`(#6782) - Add `Transform` option in `go.opentelemetry.io/otel/log/logtest`. (#6794) - Add `Desc` option in `go.opentelemetry.io/otel/log/logtest`. (#6796) ### Removed - Drop support for [Go 1.22]. (#6381, #6418) - Remove `Resource` field from `EnabledParameters` in `go.opentelemetry.io/otel/sdk/log`. (#6494) - Remove `RecordFactory` type from `go.opentelemetry.io/otel/log/logtest`. (#6492) - Remove `ScopeRecords`, `EmittedRecord`, and `RecordFactory` types from `go.opentelemetry.io/otel/log/logtest`. (#6507) - Remove `AssertRecordEqual` function in `go.opentelemetry.io/otel/log/logtest`, use `AssertEqual` instead. (#6662) ### Changed -⚠️ Update `github.com/prometheus/client_golang` to `v1.21.1`, which changes the `NameValidationScheme` to `UTF8Validation`. This allows metrics names to keep original delimiters (e.g. `.`), rather than replacing with underscores. This can be reverted by setting `github.com/prometheus/common/model.NameValidationScheme` to `LegacyValidation` in `github.com/prometheus/common/model`. (#6433) - Initialize map with `len(keys)` in `NewAllowKeysFilter` and `NewDenyKeysFilter` to avoid unnecessary allocations in `go.opentelemetry.io/otel/attribute`. (#6455) - `go.opentelemetry.io/otel/log/logtest` is now a separate Go module. (#6465) - `go.opentelemetry.io/otel/sdk/log/logtest` is now a separate Go module. (#6466) - `Recorder` in `go.opentelemetry.io/otel/log/logtest` no longer separately stores records emitted by loggers with the same instrumentation scope. (#6507) - Improve performance of `BatchProcessor` in `go.opentelemetry.io/otel/sdk/log` by not exporting when exporter cannot accept more. (#6569, #6641) ### Deprecated - Deprecate support for `model.LegacyValidation` for `go.opentelemetry.io/otel/exporters/prometheus`. (#6449) ### Fixes - Stop percent encoding header environment variables in `go.opentelemetry.io/otel/exporters/otlp/otlplog/otlploggrpc` and `go.opentelemetry.io/otel/exporters/otlp/otlplog/otlploghttp`. (#6392) - Ensure the `noopSpan.tracerProvider` method is not inlined in `go.opentelemetry.io/otel/trace` so the `go.opentelemetry.io/auto` instrumentation can instrument non-recording spans. (#6456) - Use a `sync.Pool` instead of allocating `metricdata.ResourceMetrics` in `go.opentelemetry.io/otel/exporters/prometheus`. (#6472) --------- Co-authored-by: Tyler Yahn <MrAlias@users.noreply.github.com> Co-authored-by: Robert Pająk <pellared@hotmail.com>
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Fix #3047
Use a
sync.Poolinstead of allocatingmetricdata.ResourceMetricsingo.opentelemetry.io/otel/exporters/prometheusgoos: darwin goarch: arm64 pkg: go.opentelemetry.io/otel/exporters/prometheus cpu: Apple M3 │ before.txt │ after.txt │ │ sec/op │ sec/op vs base │ Collect1-8 8.273µ ± 0% 8.013µ ± 5% ~ (p=0.065 n=6) Collect10-8 23.84µ ± 0% 22.40µ ± 3% -6.02% (p=0.002 n=6) Collect100-8 148.0µ ± 0% 139.4µ ± 0% -5.84% (p=0.002 n=6) Collect1000-8 1.326m ± 0% 1.244m ± 1% -6.14% (p=0.002 n=6) Collect10000-8 15.90m ± 1% 14.51m ± 1% -8.77% (p=0.002 n=6) geomean 227.9µ 214.3µ -6.00% │ before.txt │ after.txt │ │ B/op │ B/op vs base │ Collect1-8 35.65Ki ± 0% 34.49Ki ± 0% -3.24% (p=0.002 n=6) Collect10-8 55.78Ki ± 0% 45.57Ki ± 0% -18.31% (p=0.002 n=6) Collect100-8 260.8Ki ± 0% 174.1Ki ± 0% -33.23% (p=0.002 n=6) Collect1000-8 2.307Mi ± 0% 1.537Mi ± 1% -33.38% (p=0.002 n=6) Collect10000-8 22.47Mi ± 0% 14.75Mi ± 4% -34.36% (p=0.002 n=6) geomean 489.8Ki 365.3Ki -25.42% │ before.txt │ after.txt │ │ allocs/op │ allocs/op vs base │ Collect1-8 72.00 ± 0% 66.00 ± 0% -8.33% (p=0.002 n=6) Collect10-8 398.0 ± 0% 375.0 ± 0% -5.78% (p=0.002 n=6) Collect100-8 3.662k ± 0% 3.491k ± 0% -4.67% (p=0.002 n=6) Collect1000-8 36.15k ± 0% 34.62k ± 0% -4.24% (p=0.002 n=6) Collect10000-8 361.0k ± 0% 345.7k ± 0% -4.25% (p=0.002 n=6) geomean 4.239k 4.008k -5.47%