[dokuwiki] Re: Large memory requirements
- From: Christopher Smith <chris@xxxxxxxxxxxxx>
- To: dokuwiki@xxxxxxxxxxxxx
- Date: Fri, 28 Jan 2011 23:47:18 +0000
On 28 Jan 2011, at 12:39, Chris Tapp wrote:
> On 28 Jan 2011, at 11:41, Michael Hamann wrote:
>
>> Hi,
>>
>> Excerpts from Christopher Smith's message of 2011-01-28 12:27:07 +0100:
>>> On 28 Jan 2011, at 10:57, Chris Tapp wrote:
>> [...]
>>>> Is there any way to profile the code so I can see where the memory is
>>>> getting used?
>>
>> I've found
>> http://morefedora.blogspot.com/2008/05/profile-memory-usage-of-php-scripts.html
>> and that seems to work quite well also with current PHP/xdebug versions.
>
> Thanks guys.
>
> I had just found out about the circular reference issue myself, but I don't
> __think__ my code has any. More checking required...
>
Your probably right about _your_ code. My guess, the circular reference is in
DokuWiki's parser, probably between the handler and its call writer.
I looked into DW's memory usage a while back and found in normal operation the
parser used twice the memory it should but couldn't figure out why, at the time
I didn't know about the GC issue.
Its convoluted code, but after a quick glance, a fix maybe to add a new line
clearing $Handler in the finalise() method.
722 function finalise() {
+ unset($this->Handler);
723 }
and something similar at the end of finalise() in all the other classes which
implement the Call Writer interface (not that we have an interface defined :-) )
- Chris--
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