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Log parent quota #8390

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Merged
merged 1 commit into from
Feb 22, 2022
Merged

Log parent quota #8390

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13 changes: 12 additions & 1 deletion components/ws-daemon/pkg/cpulimit/cfs.go
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Original file line number Diff line number Diff line change
Expand Up @@ -52,11 +52,22 @@ func (basePath CgroupCFSController) SetLimit(limit Bandwidth) (changed bool, err

err = os.WriteFile(filepath.Join(string(basePath), "cpu.cfs_quota_us"), []byte(strconv.FormatInt(target.Microseconds(), 10)), 0644)
if err != nil {
return false, xerrors.Errorf("cannot set CFS quota of %d (period is %d): %w", target.Microseconds(), period.Microseconds(), err)
return false, xerrors.Errorf("cannot set CFS quota of %d (period is %d, parent quota is %d): %w",
target.Microseconds(), period.Microseconds(), basePath.readParentQuota().Microseconds(), err)
}
return true, nil
}

func (basePath CgroupCFSController) readParentQuota() time.Duration {
parent := CgroupCFSController(filepath.Dir(string(basePath)))
pq, err := parent.readUint64("cpu.cfs_quota_us")
if err != nil {
return time.Duration(0)
}

return time.Duration(pq) * time.Microsecond
}

func (basePath CgroupCFSController) readUint64(path string) (uint64, error) {
fn := filepath.Join(string(basePath), path)
fc, err := os.ReadFile(fn)
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