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Date: Fri, 7 Jul 2006 20:37:35 -0700
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Subject: FW: Help needed in benchmarking memory patch
From: andi@zend.com ("Andi Gutmans")

Sending 3rd time this time without the attachment.
You can get the diff at http://gutmans.org/alloc.zip 


-----Original Message-----
From: Andi Gutmans [mailto:andi@zend.com] 
Sent: Thursday, July 06, 2006 11:06 PM
To: 'internals@lists.php.net'
Subject: Help needed in benchmarking memory patch

Hi all,

Attached is a patch we've been working on to improve the memory management
of PHP. This patch's main advantage is reducing the memory footprint of PHP,
and therefore allowing it to scale better. Although at low concurrencies the
change seems to be negligble, while testing at higher concurrencies we saw
significant improvement with this patch, mainly due to lower memory usage.

We would very much appreciate if people here tested this patch and send in
their results. It would help us understand if others are getting consistent
results with ours, and also see whether there are any additional
improvements we should make.

This patch should apply cleanly to the PHP 5.2 CVS tree. There's not much
tuning that needs to be done. It uses malloc() to allocate large memory
blocks. You can control the size of these blocks by setting the
ZEND_MM_SEG_SIZE environment variable before starting Apache/PHP. You may
use K or M to play around with the block size. The default we are using is
256KB which seems to be a good balance.

Any feedback would be appreciated!

Andi