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8265104: CpuLoad and SystemCpuLoad in OperatingSystem MXBean returns -1.0

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Reviewed-by: dholmes, sgehwolf
This commit is contained in:
Yasumasa Suenaga 2021-04-14 07:38:31 +00:00
parent ebbce91e79
commit e2106d5af6
1 changed files with 6 additions and 2 deletions
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8
src/jdk.management/unix/classes/com/sun/management/internal/OperatingSystemImpl.java
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@ -1,5 +1,5 @@
/*
* Copyright (c) 2003, 2020, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2003, 2021, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@ -161,7 +161,11 @@ class OperatingSystemImpl extends BaseOperatingSystemImpl
if (cpuSet == null || cpuSet.length <= 0) {
cpuSet = containerMetrics.getCpuSetCpus();
}
if (cpuSet != null && cpuSet.length > 0) {
if (cpuSet == null) {
// cgroups is mounted, but CPU resource is not limited.
// We can assume the VM is run on the host CPUs.
return getCpuLoad0();
} else if (cpuSet.length > 0) {
double systemLoad = 0.0;
for (int cpu : cpuSet) {
double cpuLoad = getSingleCpuLoad0(cpu);