FS#79177 - Kernel 6.4.4 has regression with high iowait on one core
Attached to Project:
Arch Linux
Opened by Mike Cloaked (mcloaked) - Sunday, 23 July 2023, 13:51 GMT
Last edited by Toolybird (Toolybird) - Monday, 24 July 2023, 01:15 GMT
Opened by Mike Cloaked (mcloaked) - Sunday, 23 July 2023, 13:51 GMT
Last edited by Toolybird (Toolybird) - Monday, 24 July 2023, 01:15 GMT
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Details
Description:
Kernel 6.4.4 has a regression causing high iowait percentage on one core. Additional info: * package version(s) 6.4.4 and 6.4.5 * config and/or log files etc. * link to upstream bug report, if any See below Steps to reproduce: update to 6.4.4 kernel - if running mysql/mariadb, then one core has 95% iowait percentage. This has been bisected and the problematic commit identified. Kernel 6.4.4 with the problematic commit reverted no longer has this issue. Either downgrade back to 6.4.3 or build your own kernel with the regression commit reverted. See https://bugzilla.kernel.org/show_bug.cgi?id=217700 and https://bugzilla.kernel.org/show_bug.cgi?id=217699 and there is a discussion also on LKML about this. Kernel 6.4.5 is now released with the problematic commit still not reverted, so perhaps the arch kernel 6.4.5 when building should have the commit concerned also reverted, until the issue is fixed upstream. |
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Closed by Toolybird (Toolybird)
Monday, 24 July 2023, 01:15 GMT
Reason for closing: Not a bug
Additional comments about closing: See comments
Monday, 24 July 2023, 01:15 GMT
Reason for closing: Not a bug
Additional comments about closing: See comments
Please report upstream bugs against any affected userland tools that need fixing.