[jdev] sm memory leaks

Dave Lists lists at infonaut.net
Tue Mar 2 16:24:48 CST 2004


Robert Norris wrote:

>On Tue, Mar 02, 2004 at 01:08:29PM -0500, Bob Phan wrote:
>  
>
>>I've been trying to get j2 to scale.  So far, I've been able to get
>>about 8000 connections to the server before sm consumes about 3gigs of
>>memory and then locks up the system.  I'm fairly sure that 8000
>>connections doesn't _require_ 3gigs of ram, so there must be some kind
>>of memory leak in the sm.
>>
>>I'm curious if this is a known issue.  Also, I'd like to be able to
>>help track down and fix whatever memory leaks may exist in the sm.
>>If anyone could give me any help as to where to begin or how to
>>go about this, it would help out a lot.  I don't think blindly
>>diving into the sm code would be the best approach for this, so if
>>you know any sections of the code that may be linked to the sm
>>leakage, I'll start looking around there and try and patch up the
>>leaks.
>>    
>>
>
>j2 is currently pretty lousy when it comes to memory management. It
>generally assumes that it can get as much memory as it wants. Certain
>things (eg the JID cache) are never freed or cleaned up, and can grow
>forever.
>  
>
Out of curiosity does J1.4 suffer from this?

Dave.




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