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Fix process metric precision #18229

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Merged
jt2594838 merged 1 commit into from
Jul 17, 2026
+4 −4
Merged

Fix process metric precision #18229

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8 changes: 4 additions & 4 deletions iotdb-core/datanode/src/main/java/org/apache/iotdb/db/service/metrics/ProcessMetrics.java
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Original file line number Diff line number Diff line change
Expand Up @@ -56,7 +56,7 @@ public class ProcessMetrics implements IMetricSet {
private static final String PROCESS = "process";
private static final String LINUX_RSS_PREFIX = "VmRSS:";
private long lastUpdateTime = 0L;
private volatile long processCpuLoad = 0L;
private volatile double processCpuLoad = 0.0D;
private volatile long processCpuTime = 0L;

public ProcessMetrics() {
Expand Down Expand Up @@ -89,7 +89,7 @@ private void collectProcessCpuInfo(AbstractMetricService metricService) {
a -> {
if (System.currentTimeMillis() - lastUpdateTime > MetricConstant.UPDATE_INTERVAL) {
lastUpdateTime = System.currentTimeMillis();
processCpuLoad = (long) (sunOsMxBean.getProcessCpuLoad() * 100);
processCpuLoad = sunOsMxBean.getProcessCpuLoad() * 100;
processCpuTime = sunOsMxBean.getProcessCpuTime();
}
return processCpuLoad;
Expand All @@ -104,7 +104,7 @@ private void collectProcessCpuInfo(AbstractMetricService metricService) {
bean -> {
if (System.currentTimeMillis() - lastUpdateTime > MetricConstant.UPDATE_INTERVAL) {
lastUpdateTime = System.currentTimeMillis();
processCpuLoad = (long) (sunOsMxBean.getProcessCpuLoad() * 100);
processCpuLoad = sunOsMxBean.getProcessCpuLoad() * 100;
processCpuTime = sunOsMxBean.getProcessCpuTime();
}
return processCpuTime;
Expand Down Expand Up @@ -162,7 +162,7 @@ private void collectProcessMemInfo(AbstractMetricService metricService) {
SystemMetric.PROCESS_MEM_RATIO.toString(),
MetricLevel.IMPORTANT,
this,
a -> Math.round(getProcessMemoryRatio()),
a -> getProcessMemoryRatio(),
Tag.NAME.toString(),
PROCESS);
}
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