I wouldn't let it worry you too much -- you can tell it's obviously just garbage, since it collects back down to a stable state consistently. JMX requires object creation, you probably have background threads doing things, etc. This isn't THAT big of a deal. If you're really curious, you can take a heap snapshot at the bottom and at the top and see what the difference is. JProfiler would help a lot here -- i find it pretty impossible to navigate jmap heap dumps.
ms On Aug 31, 2010, at 10:44 AM, Pascal Robert wrote: > 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. > > <index.php.png.gif> _______________________________________________ > Do not post admin requests to the list. They will be ignored. > Webobjects-dev mailing list ([email protected]) > Help/Unsubscribe/Update your Subscription: > http://lists.apple.com/mailman/options/webobjects-dev/mschrag%40pobox.com > > This email sent to [email protected] _______________________________________________ Do not post admin requests to the list. They will be ignored. Webobjects-dev mailing list ([email protected]) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/webobjects-dev/archive%40mail-archive.com This email sent to [email protected]
