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Unverified Commit 77bac51d authored by Kubernetes Submit Queue's avatar Kubernetes Submit Queue Committed by GitHub
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Merge pull request #66827 from shyamjvs/fix-expected-pod-churn-in-load-test

Automatic merge from submit-queue (batch tested with PRs 66827, 60550). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>. Fix expected pod creations/deletions estimate in load test Fixing a wrongly computed expectation for first round of scaling in load test. Luckily as a side-effect, this should also speed up load test by: - 25s on 100-node cluster - 2m on 500-node cluster (so helps our presubmit - https://github.com/kubernetes/test-infra/issues/8348) - 20m on 5000-node cluster That said, I'm not 100% sure if this won't start causing failures in practice. /cc @gmarek @mborsz ```release-note NONE ```
parents f4d8220d 7250a562
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test/e2e/scalability/load.go
View file @ 77bac51d
......@@ -320,12 +320,19 @@ var _ = SIGDescribe("Load capacity", func() {
// We would like to spread scaling replication controllers over time
// to make it possible to create/schedule & delete them in the meantime.
// Currently we assume that <throughput> pods/second average throughput.
// The expected number of created/deleted pods is less than totalPods/3.
scalingTime := time.Duration(totalPods/(3*throughput)) * time.Second
// The expected number of created/deleted pods is totalPods/4 when scaling
// for the first time, with each RC changing its size from X to a uniform
// random value in the interval [X/2, 3X/2].
scalingTime := time.Duration(totalPods/(4*throughput)) * time.Second
framework.Logf("Starting to scale %v objects first time...", itArg.kind)
scaleAllResources(configs, scalingTime, testPhaseDurations.StartPhase(300, "scaling first time"))
By("============================================================================")
// The expected number of created/deleted pods is totalPods/3 when scaling for
// the second time, with each RC changing its size from a uniform random value
// in the interval [X/2, 3X/2] to another uniform random value in same interval.
scalingTime = time.Duration(totalPods/(3*throughput)) * time.Second
framework.Logf("Starting to scale %v objects second time...", itArg.kind)
scaleAllResources(configs, scalingTime, testPhaseDurations.StartPhase(400, "scaling second time"))
By("============================================================================")
......
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