[Webtest] OutOfMemoryError

[Dierk Koenig]

Hi Edgar,

thanx for your investigation. I added a section to the
troubleshooting page.

cheers
Mittie

> -----Original Message-----
> From: webtest-admin@lists.canoo.com
> [mailto:webtest-admin@lists.canoo.com]On Behalf Of Edgar P Dollin
> Sent: Donnerstag, 30. September 2004 14:37
> To: 'webtest@lists.canoo.com'; webtest@gate2.canoo.com
> Subject: RE: [Webtest] OutOfMemoryError
> 
> 
> Great tip.  Could also add some references to the standard ant 
> memory option
> as well.
> 
> 	ANT_OPTS=-Xmx128m
> 
> This SHOULD make the Troubleshooting FAQ page as it allows me to actually
> run my tests again.  I had given up on webtest and now I will give it
> another try.
> 
> Thanks.
> 
> Edgar
> 
> > -----Original Message-----
> > From: Greg Vatman [mailto:greg.vatman@paymap.com]
> > Sent: Wednesday, September 29, 2004 5:59 PM
> > To: webtest@gate2.canoo.com
> > Subject: RE: [Webtest] OutOfMemoryError
> > 
> > 
> > After much painful debugging, I have finally discovered the 
> > problem and found the solution.
> > 
> > During one of my OutOfMemoryError messages, I received some 
> > extra information about the heap:
> > 
> > compacting perm gen  total 65536K, used 65535K [0x14010000, 
> > 0x18010000, 0x18010000)
> >    the space 65536K,  99% used [0x14010000, 0x1800fd98, 
> > 0x1800fe00, 0x18010000)
> > 
> > It seems the permanent generation is spaced used by Sun's 
> > HotSpot to optimize performance and is seperate from heap 
> > sizes set by using Xmx and Xms options.  This explains why I 
> > never reach my maximum heap size before getting OutOfMemoryError.
> > 
> > Ant is loading a huge number of jars and using many classes 
> > and methods, all of which are being dumped into the permanent 
> > space.  The default size is 32M for clients and 64M for 
> > servers.  I guess that is why some people solved their issues 
> > by using the -server option.
> > 
> > My solution was to use the following option in ANT_OPTS: 
> > -XX:MaxPermSize=128m
> > 
> > Now I'm able to run the entire suite without error.
> > 
> 
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