WordPress high Steal time on Linux Ubuntu 16.04.1

  • I am having a dynamic wordpress website with multiple plugins, installed over an AWS EC2 t2.micro Instance with an ubuntu 16.04.

    At some point of working on the admin panel on different occasions, the website becomes extremely slow. I Installed netdata here for an easier way of monitoring the CPU performance. It seems that the steal time out is eating up the CPU even if I stopped working on the website completely. When I checked top command to track the processes, I found out that Kswapd0 is taking from 95% – 100% of the CPU, Check here: Performance Screenshot.

    When I searched the issue and followed the steps here to make sure that the swap only starts being used when there is 0% left memory using the following command : echo vm.swappiness=0 | sudo tee -a /etc/sysctl.confnothing changed.

    I read that it might be because I am using a micro instance and multiple people are facing this issue as well, I do not mind increasing the instance if this is the issue and pay for a small or medium instance but I just need to make sure of that before launching the website.

    I just tailed the the access.log and found out the following:41.130.43.196 – – [30/Sep/2016:20:27:31 +0200] “POST /wp-admin/admin-ajax.php HT TP/1.1” 200 475 “https://cosyclassics.cz/wp-admin/post.php?lang=en&action=edit&po st_type=page&post=5465” “Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/5 37.36 (KHTML, like Gecko) Chrome/53.0.2785.116 Safari/537.36” that repeats every couple of minutes.

    Thank you.

Viewing 1 replies (of 1 total)

  • First, I will admit that I never use Caching in WordPress, which would likely make my past problems less of an issue. With that said…

    In my experience you need at least 1.5GB of RAM, and possibly 2GB, to run even a medium traffic WordPress web site with more than a few plugins.

    You specifically mention Admin panel slowness. Admin panels take about twice the RAM of public parts of a WordPress web site.

    And, yes, all of my VPS experience has been Ubuntu.

Viewing 1 replies (of 1 total)
  • The topic ‘WordPress high Steal time on Linux Ubuntu 16.04.1’ is closed to new replies.