Right, I did not run JMeter for hours to find our some growing instance
count. Until now I used the heapdump I've got from an OOME on our production
system. Although this does not show the *increasing* instance count, but I
can take a look at the instance count and object size at the time of the
OOME. Shouldn't that help to find out the problematic instance(s)?
Tom
Nino Saturnino Martinez Vazquez Wael wrote:
Thomas Singer wrote:
You can try to see if its any page in particular that causes this. Or
of its something general... Also you need to watch out for objects
that just keep growing in number..
None of our classes has an unexpected high instance count.
Im not sure if youve already done this. So thats why you need to poke
around with jmeter, hit the different pages(in different tests) maybe
thousands of times(if its a very small leak). Then the difference should
be more clear. I once had an error that originated in a hashmap that
locked session context, it was very hard to find and was not our error
but a 3rd party I used 4 very long days for finding the problem...
It's a little abstract to use a profiler as it will not give you a
clear idea as everything originates in class[] int[] etc...
Of course.
Tom
Nino Saturnino Martinez Vazquez Wael wrote:
You can try to see if its any page in particular that causes this. Or
of its something general... Also you need to watch out for objects
that just keep growing in number..
It's a little abstract to use a profiler as it will not give you a
clear idea as everything originates in class[] int[] etc...
regards Nino
Thomas Singer wrote:
Be sure to checkout the wiki for gotchas and tips:
http://cwiki.apache.org/WICKET/wicket-and-jmeter.html
http://cwiki.apache.org/WICKET/wicket-and-jmeter-with-regular-expressions.html
Already done, but what we can get? An OOME in our application with
the heapdump. Well, we already have one and the most used objects
appear to come from Wicket (char[], byte[], String, <class>[],
HashMap$Entry, XMLTag, ValueMap, ComponentTag, RawMarkup,
HashMap$EntrySet, int[], short[] just to name the largest).
--
Best regards,
Thomas Singer
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