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W3 Total Cache
Heavy CPU load with the plugin (2 posts)

  1. doutrax
    Member
    Posted 3 years ago #

    I have a dedicated with a Xeon Quad CPU, 8 GB ram, 2000 GB HDD.
    The plugin is using memcached for optimal caching.

    When I activate the plugin I receive after about 30-40 min heavy load on my server.
    Especially MySQL and apache processes are taking a lot of power from the server.

    As you can see there's not much memory left, so maybe it's an issue related to memcached? I experienced this situation on my old server as well, and that's why I upgraded to my current server, but this haven't help on the load caused by W3 Total Cache.

    top - 19:57:53 up 1 day, 18:41, 1 user, load average: 3.67, 3.07, 2.93 Tasks: 269 total, 3 running, 266 sleeping, 0 stopped, 0 zombie
    Cpu(s): 16.8%us, 1.8%sy, 0.0%ni, 80.6%id, 0.0%wa, 0.6%hi, 0.2%si, 0.0%stMem: 8152344k total, 8080348k used, 71996k free, 151948k buffers
    Swap: 2104496k total, 208k used, 2104288k free, 5291076k cached
    PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 6533 mysql 15 0 413m 50m 5212 S 12.3 0.6 156:30.30 mysqld
    1982 apache 15 0 380m 37m 15m S 6.0 0.5 0:09.75 httpd 4581 apache 15 0 379m 36m 14m S 6.0 0.5 0:00.24 httpd
    31049 apache 15 0 380m 47m 24m S 6.0 0.6 0:18.94 httpd 657 apache 15 0 380m 37m 15m S 5.7 0.5 0:14.10 httpd
    1667 apache 15 0 380m 38m 15m S 5.7 0.5 0:11.16 httpd 2277 apache 15 0 380m 37m 15m S 5.7 0.5 0:07.33 httpd
    3642 apache 15 0 380m 38m 15m S 5.7 0.5 0:03.98 httpd 1888 apache 15 0 380m 38m 15m S 5.3 0.5 0:07.73 httpd

    When I activate WP Super Cache for example the average load is approx. 0.06-0.10.

    W3 Edge crew are welcome to take a look at my server in order to find the issue, since I love the plugin, but I'm not able to accept this heavy load on the server..

  2. Frederick Townes
    Member
    Plugin Author

    Posted 3 years ago #

    You can submit a bug submission form from the support tab of the plugin, but it sounds like a mis-configuration.

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