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Posted to dev@mina.apache.org by "Trustin Lee (JIRA)" <ji...@apache.org> on 2006/03/11 09:57:39 UTC

[jira] Resolved: (DIRMINA-176) ByteBuffer pool manager which prevents endlessly increasing pool size.

     [ http://issues.apache.org/jira/browse/DIRMINA-176?page=all ]
     
Trustin Lee resolved DIRMINA-176:
---------------------------------

    Resolution: Fixed

Done.

Here's an example:

PooledByteBufferAllocator allocator = ( PooledByteBufferAllocator ) ByteBuffer.getAllocator();
allocator.setTimeout( 5 ); // 5 seconds (the default: 1 minutes)

A daemon thread is created; it expires old buffers every one seconds.  I think this won't cause any load at all.

> ByteBuffer pool manager which prevents endlessly increasing pool size.
> ----------------------------------------------------------------------
>
>          Key: DIRMINA-176
>          URL: http://issues.apache.org/jira/browse/DIRMINA-176
>      Project: Directory MINA
>         Type: New Feature
>     Reporter: Trustin Lee
>     Assignee: Trustin Lee
>      Fix For: 0.9.3

>
> The current implementation of ByteBuffer pool is designed to increase its size for ever; it doesn't decrease at all.  This is often a cause of OutOfMemoryError and unexpedly huge heap size.  There's one viable solution for this issue:
> * Remove the buffers which have been unused for a long time from the pool.

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