Re: [Columba-devel] Fwd: Re: Performance tuning for J2SE 1.5

[Riyad K. <rs...@em...>]

Wow look at you schmoozing with the Swing team, very cool stuff.

fr...@ru... wrote:

> Hi everyone, following a part of my message exchange with 
> Scott Violett from the swing team...
> 
> 
>>>I would love to get some feedback from you, on how to improve
>>>startup time and/or memory footprint of Columba.
> 
> 
>>Frederik,
>>
>>After some investigation we've decided that the default gc parameters
>>are not tuned very well for client side applications.  For this
>>particular excercise we're gathering a bunch of apps to measure the
>>effects of different gc parameters on startup and to decide on
>>better default settings.  This means we're not going to so much look
>>into what the apps are doing, as we are the effects of changing these
>>parameters.  That said, if we come across anything we will be sure and
>>let you know.
>>
>>If are are interested in playing with the parameters yourself I would
>>suggest running columba with the vm arguments
>>-XX:+PrintGC -XX:+PrintHeapAtGC
>>to see the gc activity during startup.  We are most likely going to
>>change the size of the permanent generation (-XX:PermSize=XXXm),
>>tenure generation (-XmsXXXm) and potentially new generation
>>(-XX:NewSize=XXXm).
>>
>>    -Scott
> 
> 
> Just thought it kind a fits in your recent memory monitor discussion.
> 
> Frederik
> 
> 
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