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f64be062c4
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Prometheus: Improve response parser performance (#101517)
* introduce tests
* improve allocation by %61
* ~%27 improvement
goos: darwin
goarch: arm64
pkg: github.com/grafana/grafana/pkg/promlib/converter
cpu: Apple M1 Pro
│ pmem.0.txt │ pmem.2.txt │
│ sec/op │ sec/op vs base │
ReadPrometheusStyleResult_FromFile/prom-query-range.json-10 117.72µ ± 6% 82.90µ ± 4% -29.57% (p=0.002 n=6)
│ pmem.0.txt │ pmem.2.txt │
│ B/op │ B/op vs base │
ReadPrometheusStyleResult_FromFile/prom-query-range.json-10 104.34Ki ± 0% 76.09Ki ± 0% -27.08% (p=0.002 n=6)
│ pmem.0.txt │ pmem.2.txt │
│ allocs/op │ allocs/op vs base │
ReadPrometheusStyleResult_FromFile/prom-query-range.json-10 2463.0 ± 0% 899.0 ± 0% -63.50% (p=0.002 n=6)
* add more tests
* remove comment lines
* read string as slice to prevent type conversion
* golang lint
* revert appendValueFromString improvement
* fix merging issues
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2025-03-12 13:16:19 +01:00 |
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