[Mediawiki-l] Activating Turck MMCache after installation

[Carlton B]

> -----Original Message-----
> From: mediawiki-l-bounces at Wikimedia.org
> [mailto:mediawiki-l-bounces at Wikimedia.org]On Behalf Of David Liontooth
> Sent: Monday, June 20, 2005 5:44 PM
> To: mediawiki-l at Wikimedia.org
> Subject: [Mediawiki-l] Activating Turck MMCache after installation
>
>
> When I set up my first MediaWiki (nice work, btw!), I got "Turck MMCache
> not installed", even though I had just installed it. (I assume some app
> or daemon needed to be reloaded to detect it -- which one?)
>
> Later, when I installed a second wiki, Turck MMCache was detected, and I
> activated it. Seeing the result of the activation in LocalSettings.php,
> I uncommented the same line for the other wiki --
>
>     $wgUseTurckShm = function_exists( 'mmcache_get' ) && php_sapi_name()
> == 'apache';
>
> The effect was a messed up cache function -- the second wiki's Main_Page
> would consistently display in the first wiki. If I selected [Edit] and
> Preview, I would see the first wiki's real Main_Page intact, but saving
> it would revert the display to the second wiki's front page.
>
> Nikerabbit on #mediawiki irc diagnosed it and I fixed the problem easily
> -- whew. But how do I properly activate Turck MMCache for a wiki that is
> already installed?

This does not answer your question at all, but I experienced some
frustrating problems using Turck MMCache and I advise not using it if you're
having problems with it.   The answer I received here, if I understood it
correctly, suggest that MediaWiki has never been able to satisfactory
integrate the data caching feature of Turck in a stable or satisfactory way,
causing different people to have different problems with it.   Thus, you
shouldn't enable this option in LocalSettings.php.   You might be concerned
about losing cache capability, but (as I understand) even if you disable the
option, you still get the benefit of Turck caching compiled php scripts,
which is a big benefit.