loading of extensions in 1.12 slow? - Wikitech-l

20 May 2008

Hi,

We're in the process of upgrading from 1.9 to 1.12 (I know I know I
know...), and it seems that the including of extensions is taking a long
time.

Profile from 1.9:

    26.449   WebStart.php-conf
    24.659   Setup.php
     1.362       Setup.php-includes
     2.117       Setup.php-misc1
     1.020       Setup.php-memcached
     0.570       Setup.php-SetupSession
     0.117       Setup.php-globals
     0.052       Setup.php-User
     0.017       Setup.php-misc2
    18.543       Setup.php-extensions

Seems fast, but 1.12:

   594.761   WebStart.php-conf
     0.012   WebStart.php-ob_start
   207.409   Setup.php
    50.838       Setup.php-includes
     8.691       Setup.php-misc1
     6.780           __autoload
     9.632       Setup.php-memcached
     0.685           __autoload
     0.564       Setup.php-SetupSession
     0.197       Setup.php-globals
     0.046       Setup.php-User
     0.023       Setup.php-misc2
   128.051       Setup.php-extensions

This is pretty slow. It seems like for WebStart, having multiple inclusions
like this:

require_once('extensions/wikihow/SpecialThankAuthors.php');

slows things down. Has something changed, or did we miss flipping a switch
in the upgrade? What about Setup.php, does that have the same issue?

Thanks,
Travis