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app/vmselect/netstorage: remove superflouos map lookup at ProcessSearchQuery

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This should reduce CPU usage a bit during querying
This commit is contained in:
Aliaksandr Valialkin 2022-11-18 13:40:01 +02:00
parent 519bd2af7b
commit cae0f37edd
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GPG key ID: A72BEC6CD3D0DED1
1 changed files with 10 additions and 6 deletions
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16
app/vmselect/netstorage/netstorage.go
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@ -1011,7 +1011,10 @@ func ProcessSearchQuery(qt *querytracer.Tracer, sq *storage.SearchQuery, deadlin
startTime := time.Now()
maxSeriesCount := sr.Init(qt, vmstorage.Storage, tfss, tr, sq.MaxMetrics, deadline.Deadline())
indexSearchDuration.UpdateDuration(startTime)
m := make(map[string][]blockRef, maxSeriesCount)
type blockRefs struct {
brs []blockRef
}
m := make(map[string]*blockRefs, maxSeriesCount)
orderedMetricNames := make([]string, 0, maxSeriesCount)
blocksRead := 0
samples := 0
@ -1040,13 +1043,14 @@ func ProcessSearchQuery(qt *querytracer.Tracer, sq *storage.SearchQuery, deadlin
}
metricName := sr.MetricBlockRef.MetricName
brs := m[string(metricName)]
brs = append(brs, blockRef{
if brs == nil {
brs = &blockRefs{}
}
brs.brs = append(brs.brs, blockRef{
partRef: br.PartRef(),
addr: addr,
})
if len(brs) > 1 {
m[string(metricName)] = brs
} else {
if len(brs.brs) == 1 {
// An optimization for big number of time series with long metricName values:
// use only a single copy of metricName for both orderedMetricNames and m.
orderedMetricNames = append(orderedMetricNames, string(metricName))
@ -1075,7 +1079,7 @@ func ProcessSearchQuery(qt *querytracer.Tracer, sq *storage.SearchQuery, deadlin
for i, metricName := range orderedMetricNames {
pts[i] = packedTimeseries{
metricName: metricName,
brs: m[metricName],
brs: m[metricName].brs,
}
}
rss.packedTimeseries = pts