Heap memory usage question
Heap memory usage question
- Subject: Heap memory usage question
- From: Pascal Robert <email@hidden>
- Date: Tue, 31 Aug 2010 10:44:45 -0400
Hello everyone,
Two weeks ago, we started using Nagios to check and graph heap memory usage, and I see something strange : every 3 hours, heap usage goes from 30 MB down to 12 MB! I also saw that behavior when using JConsole in preparation for my WOWODC presentation. In fact, heap usage goes up to 30 MB over the 3 hours, and goes down back to 12 MB. This app is doing nothing, the only requests coming in are the JMX queries, so I find it a bit strange that usage is growing.
BTW, the hole in the graph is normal, Nagios is not pulling anything between 11pm and 4:30am.
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