Improve LogQL format stages requireLabel #4769
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This only includes required labels. ``` ➜ go test -benchmem -run=^$ -bench ^Benchmark_Pipeline ./pkg/logql/log -v -count 5 > after.txt && benchstat before.txt after.txt name old time/op new time/op delta _Pipeline/pipeline_bytes-16 13.8µs ± 6% 11.5µs ± 1% -16.42% (p=0.008 n=5+5) _Pipeline/pipeline_string-16 13.9µs ± 2% 11.5µs ± 2% -17.27% (p=0.008 n=5+5) _Pipeline/line_extractor_bytes-16 14.0µs ± 4% 11.6µs ± 0% -17.45% (p=0.016 n=5+4) _Pipeline/line_extractor_string-16 13.5µs ± 0% 11.5µs ± 0% -14.67% (p=0.008 n=5+5) _Pipeline/label_extractor_bytes-16 13.7µs ± 1% 11.7µs ± 1% -14.69% (p=0.008 n=5+5) _Pipeline/label_extractor_string-16 14.1µs ±11% 11.6µs ± 0% -17.89% (p=0.008 n=5+5) name old alloc/op new alloc/op delta _Pipeline/pipeline_bytes-16 9.51kB ± 0% 7.50kB ± 0% -21.19% (p=0.008 n=5+5) _Pipeline/pipeline_string-16 9.51kB ± 0% 7.50kB ± 0% -21.19% (p=0.008 n=5+5) _Pipeline/line_extractor_bytes-16 9.51kB ± 0% 7.50kB ± 0% -21.19% (p=0.008 n=5+5) _Pipeline/line_extractor_string-16 9.51kB ± 0% 7.50kB ± 0% ~ (p=0.079 n=4+5) _Pipeline/label_extractor_bytes-16 9.51kB ± 0% 7.50kB ± 0% -21.18% (p=0.008 n=5+5) _Pipeline/label_extractor_string-16 9.51kB ± 0% 7.50kB ± 0% -21.18% (p=0.008 n=5+5) name old allocs/op new allocs/op delta _Pipeline/pipeline_bytes-16 46.0 ± 0% 45.0 ± 0% -2.17% (p=0.008 n=5+5) _Pipeline/pipeline_string-16 46.0 ± 0% 45.0 ± 0% -2.17% (p=0.008 n=5+5) _Pipeline/line_extractor_bytes-16 46.0 ± 0% 45.0 ± 0% -2.17% (p=0.008 n=5+5) _Pipeline/line_extractor_string-16 46.0 ± 0% 45.0 ± 0% -2.17% (p=0.008 n=5+5) _Pipeline/label_extractor_bytes-16 46.0 ± 0% 45.0 ± 0% -2.17% (p=0.008 n=5+5) _Pipeline/label_extractor_string-16 46.0 ± 0% 45.0 ± 0% -2.17% (p=0.008 n=5+5) ``` Signed-off-by: Cyril Tovena <cyril.tovena@gmail.com>
jeschkies
reviewed
Nov 17, 2021
pkg/logql/log/fmt.go
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| return nil, fmt.Errorf("invalid line template: %w", err) | ||
| } | ||
| names := uniqueString(listNodeFields([]parse.Node{t.Root})) | ||
| namesMap := make(map[string]struct{}, len(names)) |
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Is this just a hashset? We don't seem to use the values.
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it is. I need more time to think about this PR. It does improve but I think we can do better at source I might just split this PR into 2.
pkg/logql/log/fmt.go
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| func (lf *LabelsFormatter) buildModel(lbs *LabelsBuilder) interface{} { | ||
| labels := lbs.Labels() | ||
| model := make(map[string]string, len(lf.requiredLabelNamesMap)) | ||
| if len(lf.requiredLabelNames) > 0 { | ||
| for _, l := range labels { | ||
| if _, ok := lf.requiredLabelNamesMap[l.Name]; ok { | ||
| model[l.Name] = l.Value | ||
| } | ||
| } | ||
| } | ||
| return model | ||
| } |
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This seems to be some code duplication.
Signed-off-by: Cyril Tovena <cyril.tovena@gmail.com>
|
@jeschkies I rollback the buildModel change but kept the new way to compute required node. I'll follow up with a better PR to improve performance later. |
Signed-off-by: Cyril Tovena <cyril.tovena@gmail.com>
jeschkies
approved these changes
Nov 26, 2021
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This only includes required labels.
Also fixes the text/template parsing it was buggy.
Signed-off-by: Cyril Tovena cyril.tovena@gmail.com