When WP super cache is enabled for caching and the ‘Use mod_rewrite to serve cache files’ is selected, does WP Super Cache run any php scripts?
I am having the following issue:
I m currently using the kodok theme. As soon as I enable this theme, the number of php processes shoots up! I always see 3 php process start with the STATE=Sl or STATE=R1 which means Sleep/Running and multi-threaded. All these 3 STATE=Sl/Rl processes have like ~24 threads each. I m using godaddy hosting and they are counting threads/processes as the same thing. So with these multi-threaded php processes, I m almost always over 75 processes. And I hit the 100 process limit 1000’s of things in an hour! As soon as I kill these 3 multi-threaded processes, they start up again.
#ps aux USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND admin 108213 12.5 0.1 809760 64236 ? Sl 18:51 0:12 /usr/bin/php admin 108278 2.8 0.1 289000 51196 ? S 18:51 0:02 /usr/bin/php admin 108279 8.1 0.1 799760 57836 ? R1 18:51 0:07 /usr/bin/php admin 108287 4.7 0.1 282124 42368 ? S 18:51 0:04 /usr/bin/php admin 108313 2.6 0.1 278776 40840 ? S 18:51 0:02 /usr/bin/php admin 108339 14.8 0.2 812784 73044 ? Sl 18:51 0:12 /usr/bin/php admin 108559 1.3 0.1 291840 51472 ? S 18:52 0:00 /usr/bin/php admin 108562 4.8 0.1 298264 58624 ? S 18:52 0:02 /usr/bin/php admin 108833 1.5 0.1 282880 44648 ? S 18:52 0:00 /usr/bin/php
Now when I change my theme to TwentyEleven (or any other theme for that matter) and kill the php processes then the process count on my server remains around 10-15 and never goes more than this (as expected!). Also, more importantly, I also DO NOT see any php processes get created which are in the Sl or Rl state!
So what is this kodok theme doing?
I have WP Super Cache plugin setup and currently have disabled garbage collection so that almost NO php script from the themes run! Static html pages are being served to users at the moment. Even then if I have this kodok theme enabled, it starts to create those multi-threaded php processes as soon as it is enabled. As soon as i change the theme to something else, no multi-threaded processes get created. I am not too familiar with WP programming but I am sure anyone with WP programming experience can pin point what php scripts may get run when only static html pages are being served to user using WP super cache.
I hope someone can help me with this issue. Thanks a lot for any input guys.
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