[Mediawiki-l] ImageMagic limits don't fit after upgrade to 1.17alpha

Platonides Platonides at gmail.com
Sun Apr 17 18:09:35 UTC 2011

church of emacs wrote:
> Hi, (I fixed this problem, I'm posting it nevertheless because it might
> be interesting to others)
> I updated MediaWiki from 1.15.5 to 1.17alpha and got an interesting
> error: thumbnails could not be generated anymore; there was an empty
> error message (via thumb.php:147). I traced it back to the ImageMagick
> call made by MediaWiki, see http://pastebin.ca/2047146.
> Two notable facts:
> a) MediaWiki didn't return ulimit's error and instead displayed a
> generic error. This should not be the case.
> b) I have mostly default settings and enough RAM (>1gb on machine, 512MB
> set in php.ini). This *should* work with default settings.
> It turned out that the default setting of $wgMaxShellMemory = 102400;
> was too low. Increasing it by *10 fixed all problems.
> Is the default setting perhaps too low? Anyone else experience this problem?
> Also: Were there any major changes on how images are handled between
> 1.15 and 1.17? Previously thumbnails worked just fine.
> Regards,
> Tobias / User:Church of emacs

Interesting. The out-of-memory affected bash, not convert.
Did the filename contain wildcard characters?

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