[ome-users] java.lang.OutOfMemoryError: PermGen space

[Josh Moore]

On Mar 31, 2011, at 4:00 PM, Wood, Christopher wrote:

> Josh,

Hi Chris,

> I attached the Blitz-0.log and the master.err files.

The master.err was very helpful:

3/30/11 16:55:23:101 error: Blitz-0-Ice.ThreadPool.Server-9: java.lang.OutOfMemoryError: PermGen space

PermGen errors are not affected by changes to -Xmx. Rather you need to add an element of the form:

  <option>-XX:MaxPermSize=256m</option>

and restart your server. PermGen errors are dependent on OS and whether your system is 32 or 64 bit, but 256m tends to be a very safe value. If you leave your server at -Xmx512m (which is the maximum heap size), then you probably want a smaller value, like 128m, for MaxPermSize.

Hope that helps.
Cheers,
~Josh. 

> I imported one image, about 11 MB, with 300 planes (z = 150, channels=2). I tested the Make Movie script and some of the other scripts in Insight (on mac), and tried to view them through the web client a windows computer.
> 
> Thanks
> Chris
> -----Original Message-----
> From: Josh Moore [mailto:josh at glencoesoftware.com] 
> Sent: Thursday, March 31, 2011 2:35 AM
> To: Wood, Christopher
> Cc: OME Users
> Subject: Re: [ome-users] java.lang.OutOfMemoryError: PermGen space
> 
> 
> On Mar 31, 2011, at 12:05 AM, Wood, Christopher wrote:
> 
>> Hi,
> 
> Hi Chris,
> 
>> I am getting (I restarted omero in the meantime) errors like this in master.err:
>> 
>> 3/30/11 16:55:02:131 error: Blitz-0-Ice.ThreadPool.Server-7: java.lang.OutOfMemoryError: PermGen space
>> 
>> 3/30/11 16:55:23:101 error: Blitz-0-Ice.ThreadPool.Server-9: java.lang.OutOfMemoryError: PermGen space
> 
> Do you know what series of operations (e.g. importing a file of size X, then viewing it) lead to the OutOfMemoryError? I ask to try to help judge how much memory you are going to need. If you'd like to send your Blitz-0.log (again), we should be able to track down what happened.
> 
>> I assume there is a setting somewhere to increase the JVM memory, but I am not sure where that is.
> 
> In etc/grid/template.xml on line 174 or so, in the <server-template id="BlitzTemplate"> element, there's an element:
> 
>  <option>-Xmx512M</option>
> 
> If there are resources available on that system, you might try "-Xmx1024M".
> 
>> I currently have 2 GB of memory on this machine.
>> 
>> Here are the java commands from ps:
>> 
>> 2696 ?        Sl     0:21 java -Xmx512M -Djava.awt.headless=true -Dlog4j.configuration=etc/log4j.xml -Domero.logfile=var/log/${omero.name}.log -Domero.name=Blitz-0 -jar lib/server/blitz.jar --Ice.Config=/OMERO/OMERO.server-Beta-4.2.2/var/master/servers/Blitz-0/config/config
>> 2702 ?        Sl     0:20 java -Xmx256M -Djava.awt.headless=true -Dlog4j.configuration=etc/log4j-indexing.xml -Domero.logfile=var/log/${omero.name}.log -Domero.name=Indexer-0 -jar lib/server/blitz.jar ome.fulltext --Ice.Config=/OMERO/OMERO.server-Beta-4.2.2/var/master/servers/Indexer-0/config/config
>> 
>> Thanks
>> Chris
> 
> Cheers,
> ~Josh
> <logfiles.tgz>