Bug #117929 | MySQL - 8.0.41 consuming more CPU | ||
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Submitted: | 10 Apr 6:54 | Modified: | 12 May 11:19 |
Reporter: | Arun Kumar Venugopal | Email Updates: | |
Status: | Can't repeat | Impact on me: | |
Category: | MySQL Server | Severity: | S1 (Critical) |
Version: | 8.0.41 | OS: | Ubuntu (Ubuntu - 22.04) |
Assigned to: | MySQL Verification Team | CPU Architecture: | ARM (Azure VM) |
[10 Apr 6:54]
Arun Kumar Venugopal
[10 Apr 8:03]
Alexander Deprez
CPU Usage increase post update
Attachment: Screenshot from 2025-04-10 10-03-29.png (image/png, text), 88.45 KiB.
[10 Apr 8:21]
Alexander Deprez
I want to add to this bug that we to have experienced this issue. In the above graph you can see the CPU usage of running multiple heavy analytical queries on mysql 8.0.39 versus running the exact same queries on mysql 8.0.41 We use Debian Bookworm. This has been seen across most of our Mysql servers. After weeks of comparing monitoring data we could not pinpoint a metric that has caused this. Metrics that have changed are mostly due to the CPU being at 100% for prolonged time. It might be a red herring, but the only server where we don't have this issue, is a server that got updated from 8.0.40 to 8.0.41 (instead of 8.0.39 directly to 8.0.41)
[12 May 11:19]
MySQL Verification Team
I cannot reproduce this. Can you please check that you are not affected by the EXT4 bug. http://dimitrik.free.fr/blog/posts/mysql-80-perf-xfs-vs-ext4.html Thanks