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Date: Sat, 08 Sep 2007 10:31:44 -0700
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To: Antony Dovgal <tony@daylessday.org>
CC: Andi Gutmans <andi@zend.com>, internals@lists.php.net
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Subject: Re: FW: [PHP-DEV] Patch for macros for tracking refcount and is_ref
From: rasmus@lerdorf.com (Rasmus Lerdorf)

Antony Dovgal wrote:
> On 08.09.2007 19:34, Andi Gutmans wrote:
>> When we all get a copy of the patch and get a chance to test it seriously we'll know more.
>> I'm all in favor of having GC and very enthusiastic about this coming about but I doubt you can 
>> call it well enough tested. When we made memory manager changes in the past there were bugs 
>> which were only found after a public release. 
> 
> Agree, real life tests are proven to be much more effective than any synthetic one can imagine.
> 
>> Also, if GC slows certain situations down there may well be companies who would prefer to run without it.
>> Facebook is probably a good example of a company where every % matters.
> 
> If these companies really do worry about this %, why don't they participate in development and/or testing?
> I don't recall seeing any contributions or even feedback from Facebook or alike, do you?

Facebook is quite active in APC development.  And yes, if it turns out
to be 10% slower, a lot of sites are going to want to run without it.
For scripts that aren't very complex and don't run for a long time, GC
simply isn't a very interesting feature.

-Rasmus