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app/vmselect/netstorage: vary batch size for data unpacking depending on the available CPU cores

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This should reduce contention on the channel with unpack work for systems with high number of CPU cores
This commit is contained in:
Aliaksandr Valialkin 2020-08-10 15:15:37 +03:00
parent 4ce1368e4b
commit c9f5c5623f
1 changed files with 1 additions and 1 deletions
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2
app/vmselect/netstorage/netstorage.go
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@ -251,7 +251,7 @@ func unpackWorker() {
// unpackBatchSize is the maximum number of blocks that may be unpacked at once by a single goroutine.
//
// This batch is needed in order to reduce contention for upackWorkCh in multi-CPU system.
const unpackBatchSize = 16
var unpackBatchSize = 8 * runtime.GOMAXPROCS(-1)
// Unpack unpacks pts to dst.
func (pts *packedTimeseries) Unpack(tbf *tmpBlocksFile, dst *Result, tr storage.TimeRange, fetchData bool, at *auth.Token) error {