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autoscaler
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Merge pull request https://github.com/kubernetes/contrib/pull/1170 from fgrzadkowski/faster_loop 

cluster-autoscaler: Increase main loop frequency to 10s
This commit is contained in:
Marcin Wielgus 2016-06-10 14:35:38 +02:00 committed by GitHub
parent ee8c5bfce7 439429fb9e
commit 2d3c74f953
1 changed files with 4 additions and 3 deletions
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7
cluster-autoscaler/cluster_autoscaler.go
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@ -49,8 +49,9 @@ var (
"How long the node should be unneeded before it is eligible for scale down") "How long the node should be unneeded before it is eligible for scale down")
scaleDownUtilizationThreshold = flag.Float64("scale-down-utilization-threshold", 0.5, scaleDownUtilizationThreshold = flag.Float64("scale-down-utilization-threshold", 0.5,
"Node utilization level, defined as sum of requested resources divided by capacity, below which a node can be considered for scale down") "Node utilization level, defined as sum of requested resources divided by capacity, below which a node can be considered for scale down")
scaleDownTrialFrequency = flag.Duration("scale-down-trial-frequency", 10*time.Minute, scaleDownTrialInterval = flag.Duration("scale-down-trial-interval", 10*time.Minute,
"How often scale down possiblity is check") "How often scale down possiblity is check")
scanInterval = flag.Duration("scan-interval", 10*time.Second, "How often cluster is reevaluated for scale up or down")
) )
func main() { func main() {
@ -116,7 +117,7 @@ func main() {
for { for {
select { select {
case <-time.After(time.Minute): case <-time.After(*scanInterval):
{ {
loopStart := time.Now() loopStart := time.Now()
updateLastTime("main") updateLastTime("main")
@ -204,7 +205,7 @@ func main() {
// In dry run only utilization is updated // In dry run only utilization is updated
calculateUnneededOnly := lastScaleUpTime.Add(*scaleDownDelay).After(time.Now()) || calculateUnneededOnly := lastScaleUpTime.Add(*scaleDownDelay).After(time.Now()) ||
lastScaleDownFailedTrial.Add(*scaleDownTrialFrequency).After(time.Now()) || lastScaleDownFailedTrial.Add(*scaleDownTrialInterval).After(time.Now()) ||
schedulablePodsPresent schedulablePodsPresent
updateLastTime("findUnneeded") updateLastTime("findUnneeded")