On Wed, 15 May 2002, Giuseppe Di Pierri wrote:
> in each of the three cocoon instances under tomcat, the files cocoon.xconf
> contains:
>
> <store-janitor class="org.apache.cocoon.components.store.StoreJanitorImpl"
> logger="core.store.janitor">
> <!-- How much free memory shall be available in the jvm -->
> <parameter name="freememory" value="20000000"/>
> <!-- Indicates the limit of the jvm memory consumption. The default max
> heapsize for Sun's JVM is 64Mb -->
> <parameter name="heapsize" value="430000000"/>
> <!-- How often shall the cleanup thread check memory -->
> <parameter name="cleanupthreadinterval" value="10"/>
> <!-- Indicates the thread priority of the cleanup thread -->
> <parameter name="threadpriority" value="5"/>
> <!-- How much percent of the elements of each registered Store shall
> be removed when low on memory. Default 10% -->
> <parameter name="percent_to_free" value="10"/>
> </store-janitor>
>
> The error that we get is neither an outofmemory nor an exception, the jvm just
> stops working. Then the user gets an Proxy error message (something like page
> not reachable).
>
> When you stop the process of tomcat and then start it again, every goes fine
> till the next time.
>
> I don't think this kind of problem is a bug in the code (but I want to
> investigate further on it :)
>
> Do you have some ideas?
>
> Do we have to create a single instance of cocoon under tomcat and separate it
> on more then one machine?
>
> Does the sum of the parameter values (freememory, heapsize and so on) of the
> three instances must be less then the values in the catalina.sh?
Yes, I think they must.
Have you probe a profiler to find the lock? No? Then my favorite is
http://www.ej-technologies.com/jprofiler/overview.html. But I havn't
yet startet the whole engine under jprofiler.
Stephan Michels.
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