github-mirrors/VictoriaMetrics
1
0
Fork 0
mirror of https://github.com/VictoriaMetrics/VictoriaMetrics.git synced 2024-11-21 14:44:00 +00:00
Code Issues Projects Releases Packages Wiki Activity

lib/cgroup: limit the maximum GOMAXPROCS value to the number of available CPU cores

Browse source 
There is no sense in setting GOMAXPROCS to value higher than the number of available CPU cores.
This commit is contained in:
Aliaksandr Valialkin 2020-08-28 09:40:53 +03:00
parent 10601bc652
commit f4c4ab811b
1 changed files with 8 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

8
lib/cgroup/cpu.go
View file

@ -12,6 +12,8 @@ import (
// This function must be called after logger.Init().
func UpdateGOMAXPROCSToCPUQuota() {
if v := os.Getenv("GOMAXPROCS"); v != "" {
// Do not override explicitly set GOMAXPROCS.
logger.Infof("using GOMAXPROCS=%q set via environment variable", v)
return
}
q := getCPUQuota()
@ -20,6 +22,12 @@ func UpdateGOMAXPROCSToCPUQuota() {
return
}
gomaxprocs := int(q + 0.5)
numCPU := runtime.NumCPU()
if gomaxprocs > numCPU {
// There is no sense in setting more GOMAXPROCS than the number of available CPU cores.
logger.Infof("cgroup CPU quota=%d exceeds NumCPU=%d; using GOMAXPROCS=NumCPU", gomaxprocs, numCPU)
return
}
if gomaxprocs <= 0 {
gomaxprocs = 1
}