Are you running out of space in your up/tmp directory? To fix this you need to change the cache directory that eAccelerator uses.

This article is for those running eAccelerator (common and recommended in cPanel for faster webserving). You may find you are running out of space in your /tmp directory. To fix this you need to change the cache directory that eAccelerator uses.

Login via SSH as root:

# pico /usr/lib/php.ini

Find:

eaccelerator.cache_dir="/tmp/eaccelerator"

and change it from /tmp/eaccelerator to /var/cache/eaccelerator and save the file.

mkdir /var/cache/eaccelerator

chmod 755 /var/cache/eaccelerator

service httpd stop

rm -rf /tmp/eaccelerator

service httpd start

UPDATE: If you simply want to clean out the /tmp/eaccerlator folder, the following command does the trick on CentOS and RedHat systems.

tmpwatch --mtime --all 336 /tmp/eaccelerator