[TYPO3-performance] Deleting pages in Backend extremely slow

[abo at schmutt.de]

Hi Steffen,

great, thank you for this useful article, thats what I am looking for!

Kind regards,
Andrea

Quoting Steffen Gebert <steffen.gebert at typo3.org>:

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> Hi Andrea,
>
> get a profiler and find out, what takes so much time.
> See e.g.
> buzz.typo3.org/people/steffen-gebert/article/profiling-typo3-with-xhprof/
>
> It could be cache invalidation from what you describe.
>
> Kind regards
> Steffen
>
> - --
> Steffen Gebert
> TYPO3 CMS Core Team Member
> TYPO3 Server Administration Team Member
>
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> On 10/4/12 11:26 AM, abo at schmutt.de wrote:
>>
>> Hello,
>>
>> I have a very special performance problem in a big typo3 (>100.000
>> pages) installation, version 4.5.4:
>>
>> Deleting of pages is extremly slow: >30sec,
>> Often backend completely timed out. I get then this red overlay, I think
>> it is some kind of timeout:
>> Connection Problem
>> Sorry, but an error occurred while connecting to the server. Please
>> check your network connection.
>>
>> Other page operations like create, move, edit, rename are OK.
>> Well, not fast but OK, Firebug shows between 500ms and 3,5s.
>>
>> Database is OK, mysql slow requests doesn't show anything.
>> PHP Memory limit is on 256M on dev server, and 512M on live server, both
>> have this problem
>> Deprecation log is OK
>>
>> You can help me, if you know anything to catch that bug.
>> Is there any logging, performance tool for the backend? If you can tell
>> me where the "delete pages" code is running, I can add some debug
>> messages by myself.
>>
>> As the server is usually OK, there must be any stupid thing, extension
>> or someting starting lots of requests when deleting pages. Actually we
>> have solr under suspicion, but we can't find anything atm.
>>
>> Or if you have any other idea, let me know!
>>
>> Thanks,
>> Andrea Schmuttermair
>>
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