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calculate process cpu usage to support application running in container environment

This commit is contained in:
tianhao 2019-12-16 20:37:28 +08:00 committed by Jason Joo
parent 72bfe870cb
commit 6e0d116751
1 changed files with 21 additions and 1 deletions
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22
sentinel-core/src/main/java/com/alibaba/csp/sentinel/slots/system/SystemStatusListener.java
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@ -16,6 +16,8 @@
package com.alibaba.csp.sentinel.slots.system;
import java.lang.management.ManagementFactory;
import java.lang.management.RuntimeMXBean;
import java.util.concurrent.TimeUnit;
import com.alibaba.csp.sentinel.Constants;
import com.alibaba.csp.sentinel.log.RecordLog;
@ -33,6 +35,9 @@ public class SystemStatusListener implements Runnable {
volatile String reason = StringUtil.EMPTY;
volatile long processCpuTime = 0;
volatile long processUpTime = 0;
public double getSystemAverageLoad() {
return currentLoad;
}
@ -46,6 +51,7 @@ public class SystemStatusListener implements Runnable {
try {
OperatingSystemMXBean osBean = ManagementFactory.getPlatformMXBean(OperatingSystemMXBean.class);
currentLoad = osBean.getSystemLoadAverage();
/*
* Java Doc copied from {@link OperatingSystemMXBean#getSystemCpuLoad()}:</br>
* Returns the "recent cpu usage" for the whole system. This value is a double in the [0.0,1.0] interval.
@ -54,7 +60,21 @@ public class SystemStatusListener implements Runnable {
* observed. All values between 0.0 and 1.0 are possible depending of the activities going on in the
* system. If the system recent cpu usage is not available, the method returns a negative value.
*/
currentCpuUsage = osBean.getSystemCpuLoad();
double systemCpuUsage = osBean.getSystemCpuLoad();
// calculate process cpu usage to support application running in container environment
RuntimeMXBean runtimeBean = ManagementFactory.getPlatformMXBean(RuntimeMXBean.class);
long newProcessCpuTime = osBean.getProcessCpuTime();
long newProcessUpTime = runtimeBean.getUptime();
int cpuCores = osBean.getAvailableProcessors();
long processCpuTimeDiffInMs = TimeUnit.NANOSECONDS
.toMillis(newProcessCpuTime - processCpuTime);
long processUpTimeDiffInMs = newProcessUpTime - processUpTime;
double processCpuUsage = (double) processCpuTimeDiffInMs / processUpTimeDiffInMs / cpuCores;
processCpuTime = newProcessCpuTime;
processUpTime = newProcessUpTime;
currentCpuUsage = Math.max(processCpuUsage, systemCpuUsage);
if (currentLoad > SystemRuleManager.getSystemLoadThreshold()) {
writeSystemStatusLog();