FAQ
Add JVM memory usage to JvmMetrics
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Key: HADOOP-6279
URL: https://issues.apache.org/jira/browse/HADOOP-6279
Project: Hadoop Common
Issue Type: Improvement
Affects Versions: 0.20.2, 0.21.0
Reporter: Todd Lipcon
Assignee: Todd Lipcon
Priority: Minor


The JvmMetrics currently publish memory usage from the MemoryMXBean. This is useful, but doesn't include the total heap size (eg as displayed in the JT Web UI).

It would be nice to expose Runtime.getRuntime().maxMemory() as part of JvmMetrics.

It seems that Runtime.getRuntime().totalMemory() (used by the JT for "memory used") is the same as the 'memHeapCommittedM' which already exists.

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postedSep 22, '09 at 11:03p
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