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Posted to notifications@skywalking.apache.org by GitBox <gi...@apache.org> on 2021/08/30 03:34:30 UTC
[GitHub] [skywalking] amwyyyy opened a new issue #7602: instance CPU usage exceeds 100% in 8.3.0
amwyyyy opened a new issue #7602:
URL: https://github.com/apache/skywalking/issues/7602
Please answer these questions before submitting your issue.
- Why do you submit this issue?
- [x] Question or discussion
- [ ] Bug
- [ ] Requirement
- [ ] Feature or performance improvement
#### The cpu usage rate exceeds 100%. From the source code of the agent, it will not exceed 100%. What might be the cause?
<img width="1859" alt="图片" src="https://user-images.githubusercontent.com/8274512/131280025-daca2ce4-9afa-4d50-99e2-b1ee03b2d22f.png">
```
public CPU getCPUMetrics() {
long cpuTime = this.getCpuTime();
long cpuCost = cpuTime - lastCPUTimeNs;
long now = System.nanoTime();
try {
CPU.Builder cpuBuilder = CPU.newBuilder();
return cpuBuilder.setUsagePercent(cpuCost * 1.0d / ((now - lastSampleTimeNs) * cpuCoreNum) * 100).build();
} finally {
lastCPUTimeNs = cpuTime;
lastSampleTimeNs = now;
}
}
```
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[GitHub] [skywalking] wu-sheng closed issue #7602: instance CPU usage exceeds 100% in 8.3.0
Posted by GitBox <gi...@apache.org>.
wu-sheng closed issue #7602:
URL: https://github.com/apache/skywalking/issues/7602
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