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app/vmselect/netstorage: reset big result values every 10 seconds instead of after processing every time series

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This should reduce GC pressure when processing time series with big number of rows
This commit is contained in:
Aliaksandr Valialkin 2020-06-24 19:36:55 +03:00
parent d664bde307
commit 12b87b2088
1 changed files with 5 additions and 1 deletions
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6
app/vmselect/netstorage/netstorage.go
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@ -13,6 +13,7 @@ import (
"github.com/VictoriaMetrics/VictoriaMetrics/lib/bytesutil"
"github.com/VictoriaMetrics/VictoriaMetrics/lib/decimal"
"github.com/VictoriaMetrics/VictoriaMetrics/lib/encoding"
"github.com/VictoriaMetrics/VictoriaMetrics/lib/fasttime"
"github.com/VictoriaMetrics/VictoriaMetrics/lib/handshake"
"github.com/VictoriaMetrics/VictoriaMetrics/lib/logger"
"github.com/VictoriaMetrics/VictoriaMetrics/lib/netutil"
@ -85,6 +86,7 @@ func init() {
func timeseriesWorker(workerID uint) {
var rs Result
var rsLastResetTime uint64
for tsw := range timeseriesWorkCh {
rss := tsw.rss
if time.Until(rss.deadline.Deadline) < 0 {
@ -100,9 +102,11 @@ func timeseriesWorker(workerID uint) {
}
tsw.rowsProcessed = len(rs.Values)
tsw.doneCh <- nil
if cap(rs.Values) > 1024*1024 && 4*len(rs.Values) < cap(rs.Values) {
currentTime := fasttime.UnixTimestamp()
if cap(rs.Values) > 1024*1024 && 4*len(rs.Values) < cap(rs.Values) && currentTime-rsLastResetTime > 10 {
// Reset rs in order to preseve memory usage after processing big time series with millions of rows.
rs = Result{}
rsLastResetTime = currentTime
}
}
}