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Minor fixes

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This commit is contained in:
Chih-Chieh Yang 2022-08-09 12:19:00 +00:00
parent 3c31efe32f
commit 94097457fd
1 changed files with 3 additions and 7 deletions
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10
test/integration/apiserver/flowcontrol/concurrency_util_test.go
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@ -163,13 +163,8 @@ func intervalMetricAvg(snapshot0, snapshot1 metricSnapshot, plLabel string) plMe
// This test differs from TestPriorityLevelIsolation since TestPriorityLevelIsolation checks throughput instead
// of concurrency. In order to mitigate the effects of system noise, authorization webhook is used to artificially
// increase request execution time to make the system noise relatively insignificant.
//
// Secondarily, this test also checks the observed seat utilizations against values derived from expecting that
// the throughput observed by the client equals the execution throughput observed by the server.
//
// This test recognizes that there is noise in the measurements coming from uncontrolled overheads
// and unsynchronized reading of related quantities. This test takes as a relative error margin 2 times
// the smaller (of the two traffic classes) coefficient of variation of the client-observed latency.
func TestConcurrencyIsolation(t *testing.T) {
defer featuregatetesting.SetFeatureGateDuringTest(t, utilfeature.DefaultFeatureGate, genericfeatures.APIPriorityAndFairness, true)()
// NOTE: disabling the feature should fail the test
@ -315,8 +310,9 @@ func TestConcurrencyIsolation(t *testing.T) {
t.Logf("Error margin is %v", margin)
isConcurrencyExpected := func(name string, observed float64, expected float64) bool {
t.Logf("%v relative error is %v", name, math.Abs(expected-observed)/expected)
return math.Abs(expected-observed)/expected <= margin
relativeErr := math.Abs(expected-observed) / expected
t.Logf("%v relative error is %v", name, relativeErr)
return relativeErr <= margin
}
if !isConcurrencyExpected(plNoxu1.Name, noxu1ObservedConcurrency, noxu1ExpectedConcurrency) {
t.Errorf("Concurrency observed by noxu1 is off. Expected: %v, observed: %v", noxu1ExpectedConcurrency, noxu1ObservedConcurrency)