[Typo3-dev] TYPO3 3.7.0 memory usage ?

[Ingmar Schlecht]

Martin T. Kutschker schrieb:
> Michael Stucki wrote:
> 
>> Hi Sylvain,
>>
>>
>>> Can be 3.7.0 more memory consuming than previous version ?
>>>
>>> My server report a:
>>>
>>> Fatal error: Allowed memory size of 25165824 bytes exhausted (tried to
>>> allocate 40 bytes) in
>>> /home/www/typo3/typo3_src-3.7.0-dev/t3lib/class.t3lib_div.php
>>> on line 1822
>>
>>
>> Yes, you're right. Kasper is aware of this and tries to find a 
>> solution for
>> that problem:

Yes, Kasper really takes this problem serious and is trying to find a 
solution.

> I suggest to stop doing repeated string concatenations and passing 
> around big junks of output in $content, etc.
> 
> Another big win would IHMO to use array references rather than copies.
> 
> I've seen code in the EM where a part of an assoc is passed (as value) 
> to an subroutine just to replace the original value within the array. 
> IMHO waste of CPU cycles on an unnecessary copy plus waste of memory.


We have a team project called "Profiling", at least in theory.
Their job was to do exactly to spot those performance killers like the 
ones you outlined.
Unfortunately I have never heard of any output from that project (I can 
be wrong though).
http://typo3.org/projects/teams-and-projects/?no_cache=1&tx_extrepmgm_pi1%5BprojUid%5D=24


cheers,
Ingmar