[TYPO3-dev] DB Performance Problems (fe_sessions table)

[Susanne Moog]

Hi Steffen,

Steffen Gebert schrieb:
>>> Susanne Moog wrote:
>>>> MySQL log shows thousands of the following queries:
>>>>
>>>> DELETE FROM fe_sessions    WHERE    ses_id =
>>>> '9dd6ed3c54bdf13ea23cb82a7c095831'    AND ses_name = 'fe_typo_user'
> 
> Haven't we had such a topic already some days ago, where the server slows 
> down every day at 9:00 AM?
> Think it was in english list... but as far as I remember there was also no 
> immediate solution.
> 

I have seen that topic but it seems to be a different issue, as we have
those queries constantly... I just wondered if - given the not used
table of the queries - something could be wrong, but as Dmitry
explained, those queries are normal. So the problem seems to be
somewhere else. (Problem description atm would be: we have two to four
times as many queries per second in the last few days than we had over
the last weeks.)

I'll look a bit further and tell you if I find something.

Regards,

Susanne