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Merge pull request #96828 from panjf2000/opt-epoll-eventfd

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kubelet/eviction: eliminate redundant allocations when handling eventfd
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Kubernetes Prow Robot 2022-03-01 13:59:54 -08:00 committed by GitHub
commit 5d6a793221
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1 changed files with 1 additions and 1 deletions
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pkg/kubelet/eviction/threshold_notifier_linux.go
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@ -116,6 +116,7 @@ func (n *linuxCgroupNotifier) Start(eventCh chan<- struct{}) {
klog.InfoS("Eviction manager: error adding epoll eventfd", "err", err) klog.InfoS("Eviction manager: error adding epoll eventfd", "err", err)
return return
} }
buf := make([]byte, eventSize)
for { for {
select { select {
case <-n.stop: case <-n.stop:
@ -131,7 +132,6 @@ func (n *linuxCgroupNotifier) Start(eventCh chan<- struct{}) {
continue continue
} }
// Consume the event from the eventfd // Consume the event from the eventfd
buf := make([]byte, eventSize)
_, err = unix.Read(n.eventfd, buf) _, err = unix.Read(n.eventfd, buf)
if err != nil { if err != nil {
klog.InfoS("Eviction manager: error reading memcg events", "err", err) klog.InfoS("Eviction manager: error reading memcg events", "err", err)