While looking through this WordPress performance post I realised that eAccelerator might not be running properly on this blog. For some time I’ve noticed this site hasn’t been as quick off the mark as it used to be. Dare I say it, but it was even a little sluggish!
If you’re not familiar with it, eAccelerator is a PHP accelerator. It caches PHP bytecode and performs optimizations to make your PHP site run a lot faster.
I verified that eAccelerator was loaded and then checked my php.ini configuration. Sure enough, the eaccelerator.cache_dir directive was set to “/tmp/eacc/” and that directory was deleted the last time my server rebooted.
A permanent fix is to change the location of the cache dir. Put it anywhere the webserver can read, but don’t put it in /tmp/.
While you’re looking at eAccelerator, upgrade to the latest version, especially if you’re running PHP5.
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