Hi, We recently had a similar problem when we updated from 10.5.12 to 10.6.10.
The cause was that the default behavior changed from innodb_flush_method = fsync to innodb_flush_method = O_DIREC Which means, no kernel file caching. If you have a too small innodb_buffer_pool_size in this case, there is a lot of disk I/O and thus a lot of CPU wait time. Setting innodb_buffer_pool_size = 8G helped in our case. Winfried Am 26. November 2022 14:45:26 MEZ schrieb William Edwards via Pdns-users <firstname.lastname@example.org>: >Hi, > >Are people on this mailing list seeing increased CPU usage when using MariaDB >10.6.11 with PowerDNS 4.5.4? > >Context: > >I use PowerDNS with the gmysql backend. Last Wednesday, I upgraded MariaDB >10.6.10 to 10.6.11 on 8 machines running PowerDNS. Since then, MySQL's average >CPU usage has increased from 2,5% to 55%. This happens on all upgraded >machines. However, this issue does not occur on machines running MariaDB >10.6.11 without PowerDNS. PowerDNS itself was not upgraded. > >I am aware that this issue is (most likely) not caused by PowerDNS. I am >therefore only wondering whether others have seen the same behaviour. If so, >that would save me some debugging time. > >Thank you, > >William Edwards > >_______________________________________________ >Pdns-users mailing list >Pdnsemail@example.com >https://mailman.powerdns.com/mailman/listinfo/pdns-users
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