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kubelet/eviction: eliminate redundant allocations when handling eventfd

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This commit is contained in:
Andy Pan 2020-11-24 14:39:47 +08:00
parent 8b2f5be319
commit 3033a64135
1 changed files with 1 additions and 1 deletions
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2
pkg/kubelet/eviction/threshold_notifier_linux.go
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@ -107,6 +107,7 @@ func (n *linuxCgroupNotifier) Start(eventCh chan<- struct{}) {
klog.Warningf("eviction manager: error adding epoll eventfd: %v", err) klog.Warningf("eviction manager: error adding epoll eventfd: %v", err)
return return
} }
buf := make([]byte, eventSize)
for { for {
select { select {
case <-n.stop: case <-n.stop:
@ -122,7 +123,6 @@ 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.Warningf("eviction manager: error reading memcg events: %v", err) klog.Warningf("eviction manager: error reading memcg events: %v", err)