`在Java中监控每个线程的CPU使用率?

它使用 ThreadMXBean getThreadCpuTime()函数. /p>类似的东西: long upTime = runtimeProxy.getUptime(); List<Long> threadCpuTime = new ArrayList<Long>(); for (int i = 0; i < threadIds.size(); i++) { long threadId = threadIds.get(i); if (threadId != -1) { threadCpuTime.add(threadProxy.getThreadCpuTime(threadId)); } else { threadCpuTime.add(0L); } } int nCPUs = osProxy.getAvailableProcessors(); List<Float> cpuUsageList = new ArrayList<Float>(); if (prevUpTime > 0L && upTime > prevUpTime) { // elapsedTime is in ms long elapsedTime = upTime - prevUpTime; for (int i = 0; i < threadIds.size(); i++) { // elapsedCpu is in ns long elapsedCpu = threadCpuTime.get(i) - prevThreadCpuTime.get(i); // cpuUsage could go higher than 100% because elapsedTime // and elapsedCpu are not fetched simultaneously. Limit to // 99% to avoid Chart showing a scale from 0% to 200%. float cpuUsage = Math.min(99F, elapsedCpu / (elapsedTime * 1000000F * nCPUs)); cpuUsageList.add(cpuUsage); } }I would like to ask whether there is some simple way to determine cpu usage per thread in java. Thanks 解决方案 I believe the JConsole (archived link) does provide this kind of information through a pluginIt uses ThreadMXBean getThreadCpuTime() function.Something along the line of: long upTime = runtimeProxy.getUptime(); List<Long> threadCpuTime = new ArrayList<Long>(); for (int i = 0; i < threadIds.size(); i++) { long threadId = threadIds.get(i); if (threadId != -1) { threadCpuTime.add(threadProxy.getThreadCpuTime(threadId)); } else { threadCpuTime.add(0L); } } int nCPUs = osProxy.getAvailableProcessors(); List<Float> cpuUsageList = new ArrayList<Float>(); if (prevUpTime > 0L && upTime > prevUpTime) { // elapsedTime is in ms long elapsedTime = upTime - prevUpTime; for (int i = 0; i < threadIds.size(); i++) { // elapsedCpu is in ns long elapsedCpu = threadCpuTime.get(i) - prevThreadCpuTime.get(i); // cpuUsage could go higher than 100% because elapsedTime // and elapsedCpu are not fetched simultaneously. Limit to // 99% to avoid Chart showing a scale from 0% to 200%. float cpuUsage = Math.min(99F, elapsedCpu / (elapsedTime * 1000000F * nCPUs)); cpuUsageList.add(cpuUsage); } } 这篇关于`在Java中监控每个线程的CPU使用率?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！ 上岸，阿里云！