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High CPU load (3 posts)

  1. kevinff
    Posted 5 years ago #

    Hello there,
    I'm posting this to know if other people had the same problem.

    Every 2/3 days or so i get a very high CPU load on my server.

    I had no problem with my server for a long time, and since i migrated one of my sites to WPMU, i get this issue, which sometimes creates a HUGE php5/cgi queue and ends up in the server being overloaded.

    Therefore i've added some logs to understand the exact time and found out that the WPMU site was causing this. I already cleaned/removed faulty plugins, i have just a few plugins left which don't change many things.

    I've found the 1 minute interval where the load gets very high and i found out from mysql binlogs that wordpress was launching many wp_cron at that time, as i see many updates of the cron and _transient_doing_cron of each blog, and many updates of the _site_transient_update_core of the network.

    I saw that there were some topics about wp-cron making their server overloaded, however many are old or incomplete.

    I think there's somehow a bug in wordpress which makes this wp-cron go in loop or something but it's not an easy task to dig into this problem.

    Any feedback or help appreciated!

  2. I'm pretty sure they tackled this exact issue in 3.1.


  3. kevinff
    Posted 5 years ago #

    Thanks Andrea_r!
    I hope it will fix my problem, i'm adding the patch now!

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