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Date: Wed, 04 Jan 2006 04:40:18 +0100
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To: Rasmus Lerdorf <rasmus@lerdorf.com>
Cc: php internals <internals@lists.php.net>
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Subject: Re: [PHP-DEV] debugging APC - bit over my head; clue desired
From: jochem@iamjochem.com (Jochem Maas)

Rasmus Lerdorf wrote:
> Jochem Maas wrote:
> 
>> a while back I was asking about APC - I have a problem with php
>> seghfaulting when I use APC _and_ turn on the opcode cache (apc_store()
>> and apc_fetch() work very well - I'm sticking _lots_ of 'ResultSet' 
>> objects
>> in there for instance and it works very nicely) 
> 
> 
> Note that caching arrays is way faster than caching objects, so if at 
> all possible, convert your ResultSet object to an associative array 
> before storing it.

I need the object at run time to make the whole lot transparent.
but given the speed increase I get from not having to make crazy
database calls (my lack of skill/foresight coupled with
strange/impossible/arcane marketing/sales driven requirements :-)
I'm still happy - thanks for the tip though! noted for future use.

> 
> To fix your segfault I'll need a short PHP script that reproduces the 
> problem.  On one hand I bet an <?php echo "hello world"?> script doesn't 
> crash it, and on the other you have whatever code you are running that 
> does.  Step up from Hello World slowly until it starts crashing and send 
> me that.

I know the problem lies somewhere in the 194 classes I have in the project.
I have been trying to reproduce the problem in a short case for months, having
just found out that its the classes ->

apc.filters                             = -.*\.class\.php

that line allows me to use apc; so now apc has saved my neck. thank you btw.
anyway I'll try to figure out a way to test the classes in as near to isolation
as I can get to figure out what is going wrong - once you know that the reproduce
script is usually quite easy.

(any examples for apc.filters in the docs would be super, also an quick
explaination on apc.dynamic_errors)

kind regards,
Jochem

ps - IIRC (forgive me if I'm wrong) you yourself asked for the backtrace, but it
took a while for me to figure out how to create one and successfully do it,
2 months :-P

> -Rasmus
>