<![CDATA[More stable kernels with partial Dirty Frag fixes]]>More stable kernels with partial Dirty Frag fixes

https://lwn.net/Articles/1071483/

]]>https://board.circlewithadot.net/topic/75ef71d2-b371-442b-9ba8-2d5e6aa61049/more-stable-kernels-with-partial-dirty-frag-fixesRSS for NodeFri, 15 May 2026 02:43:57 GMTFri, 08 May 2026 19:51:07 GMT60<![CDATA[Reply to More stable kernels with partial Dirty Frag fixes on Sat, 09 May 2026 13:38:04 GMT]]>@lwn @tomasv thanks

]]>https://board.circlewithadot.net/post/https://ioc.exchange/users/aho/statuses/116544889438595952https://board.circlewithadot.net/post/https://ioc.exchange/users/aho/statuses/116544889438595952Sat, 09 May 2026 13:38:04 GMT<![CDATA[Reply to More stable kernels with partial Dirty Frag fixes on Sat, 09 May 2026 11:25:03 GMT]]>@aho @tomasv This is the article, "The 7.0 scheduler regression that wasn't".

The tl;dr was that the "regression" happened on a system running PostgreSQL with huge pages disabled. Once the reporter enabled them, the problem disappeared.

Link Preview Image
The 7.0 scheduler regression that wasn't

One of the more significant changes in the 7.0 kernel release is to use the lazy-preemption mod [...]

favicon

LWN.net (lwn.net)

]]>https://board.circlewithadot.net/post/https://fedi.lwn.net/users/lwn/statuses/116544366440387322https://board.circlewithadot.net/post/https://fedi.lwn.net/users/lwn/statuses/116544366440387322Sat, 09 May 2026 11:25:03 GMT<![CDATA[Reply to More stable kernels with partial Dirty Frag fixes on Sat, 09 May 2026 10:37:43 GMT]]>@tomasv @lwn that's good to hear, as had to upgrade kernel and was a bit worried over a headline I saw some time ago when I didn't really planed on upgrading kernel...

]]>https://board.circlewithadot.net/post/https://ioc.exchange/users/aho/statuses/116544180261079669https://board.circlewithadot.net/post/https://ioc.exchange/users/aho/statuses/116544180261079669Sat, 09 May 2026 10:37:43 GMT<![CDATA[Reply to More stable kernels with partial Dirty Frag fixes on Sat, 09 May 2026 10:36:12 GMT]]>@aho @lwn I don't think so, or at least I'm not aware of a fix. But I also think the workload showing the regression is extremely artificial, and you'll not see the regression for anything remotely realistic.

]]>https://board.circlewithadot.net/post/https://fosstodon.org/users/tomasv/statuses/116544174318064614https://board.circlewithadot.net/post/https://fosstodon.org/users/tomasv/statuses/116544174318064614Sat, 09 May 2026 10:36:12 GMT<![CDATA[Reply to More stable kernels with partial Dirty Frag fixes on Sat, 09 May 2026 09:50:15 GMT]]>@lwn a bit unrelated, the performance degradation in the 7, has it been fixed (either postgresql or kernel side)?

]]>https://board.circlewithadot.net/post/https://ioc.exchange/users/aho/statuses/116543993652037529https://board.circlewithadot.net/post/https://ioc.exchange/users/aho/statuses/116543993652037529Sat, 09 May 2026 09:50:15 GMT