[PECL-DEV] [memcache/PECL] Performance problems with set & data
mikael at synd.info
Sun Apr 23 19:42:42 UTC 2006
Setting the chunk size > 16k seem to mitigate the problem, I've added an ini
config directive "memcache.chunk_size" for this purpose. Using
"memcache.chunk_size = 32768" in php.ini or "ini_set('memcache.chunk_size',
32768);" should do the trick.
The changes are in CVS, checking out a copy is as easy as:
cvs -d :pserver:cvsread at cvs.php.net:/repository login
cvs -d :pserver:cvsread at cvs.php.net:/repository co pecl/memcache
Would you mind checking to see that the problem does indeed disappear with
larger chunk sizes in your environment?
----- Original Message -----
From: "Antony Dovgal" <antony at zend.com>
To: "Mikael Johansson" <mikael at synd.info>
Cc: "Jean-François Bustarret" <jfbubus at gmail.com>;
<memcached at lists.danga.com>; <pecl-dev at lists.php.net>
Sent: Sunday, April 23, 2006 7:53 PM
Subject: Re: [PECL-DEV] [memcache/PECL] Performance problems with set & data
> Probably this is somehow related to the problem I've met in the past:
> The problem is that two subsequent writes to memcached daemon are MUCH
> more slower than one writing the same data in one chunk.
> This was the reason why I had to patch PECL/memcache 2 years ago and make
> it write the data and the delimiter ("\r\n") in one call.
> I don't remember details of the conversation I had with Brad and Anatoly,
> but I still don't know the reasons of this behavior.
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