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

[Dmitry Dulepov]

Hi!

Susanne Moog wrote:
> *g* Being confidential is part of the problem, the other problem is: I
> just don't have exact facts and figures here... oh and "some" extensions
> meant some of our own custom ones that were especially designed for this
> website. We had no problems with extensions from ter.

Check custom exts for set_no_cache(). Those will be performance killers.

> New hardware, clustered frontend server, special fileserver for static
> files, special db server with I don't know how much but more than 20 GB
> memory... and I haven't seen (wasn't allowed) any hit statistics... I am
> more like the messenger about this problem... sorry :(

Wow! That hardware should be able to server TYPO3 pages to huge amount of users. May be something is not set up correctly (MySQL performance parameters, no PHP accelerator, etc).

-- 
Dmitry Dulepov
TYPO3 core team
http://dmitry-dulepov.com/
"Computers are so unreliable... just like people" (Major Cain, "Resident Evil: Apocalypse")