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I run a news & media blog with over a few million readers every month. I'm currently using Google Cloud with a 32gb ram server with WordPress.

My server is hitting 84% memory usage due to the following:

usr/sbin/mysqld 20--daemonize 20--pid-file=/var/run/mysqld/mysqld.pid

If I were to restart the MySQL server it'd be okay for some time around 20% usage and it'll go up again to 80%. I'm unable to pinpoint the cause.

edit: corrected CPU to Memory.

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  • Why is the CPU utilisation bothering you?
    – mustaccio
    Jan 27 at 1:57
  • Sorry about that, I mistakenly added CPU instead of memory usage.
    – Jaya
    Jan 27 at 2:10
  • Msybe its just caching
    – Rohit Gupta
    Jan 27 at 2:20
  • It started only 3-4 days ago. Before it was fine, I tried looking up issue, but can't really find anything. and when it goes up to 80% memory usage, it says that much until I restart the MySQL server manually.
    – Jaya
    Jan 27 at 2:27
  • I can't mark it as a duplicate, but maybe this will helpMySQL maximum memory usage
    – Rohit Gupta
    Jan 27 at 3:06

1 Answer 1

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hitting 84% memory usage

Good.

In General, MySQL is optimally configured "out of the box" these days. Furthermore, cloud providers make sure it is well configured.

restart ... around 20% usage

Good. The main memory user, InnoDB's buffer_pool, grows over time, up to the limit of innodb_buffer_pool_size.

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  • I end up finding the issue, it was Smush Plugin that was increasing the load for some, I absolutely have no idea why.
    – Jaya
    Jan 27 at 15:17

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