From: Brandon Ho <brandonho667@gmail.com>
To: rpm@xenomai.org
Cc: brandonho667@gmail.com, brho@relativityspace.com,
jsridharan@relativityspace.com, xenomai@lists.linux.dev
Subject: Re: Minor page faults from memory compaction causing in-band transitions
Date: Mon, 13 Apr 2026 11:19:29 -0700 [thread overview]
Message-ID: <20260413181929.1801013-1-brho@relativityspace.com> (raw)
In-Reply-To: <87v7e8yzhj.fsf@xenomai.org>
Thank you for the responses! I recently came across the
`compact_unevictable_allowed` sysctl option and it seems like it could be a
good fit for our use case. Setting it to 0 would prevent the kernel from
compacting/migrating locked pages, which should eliminate the minor faults
we're seeing during compaction.
Could we possibly set `compact_unevictable_allowed=0` by default when
CONFIG_EVL is enabled?
https://www.infradead.org/~mchehab/kernel_docs/admin-guide/sysctl/vm.html#compact-unevictable-allowed
next prev parent reply other threads:[~2026-04-13 18:20 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-03-31 23:14 Minor page faults from memory compaction causing in-band transitions Brandon Ho
2026-04-02 21:23 ` Jan Kiszka
2026-04-03 12:55 ` Philippe Gerum
2026-04-13 18:19 ` Brandon Ho [this message]
2026-04-13 18:31 ` Philippe Gerum
[not found] ` <CY1P110MB0760484C0708C37BA89D5A02D624A@CY1P110MB0760.NAMP110.PROD.OUTLOOK.COM>
2026-04-14 7:05 ` Philippe Gerum
2026-04-14 7:37 ` Florian Bezdeka
2026-04-14 7:42 ` Philippe Gerum
2026-04-14 7:52 ` Philippe Gerum
-- strict thread matches above, loose matches on Subject: below --
2026-05-04 17:52 Jay Sridharan
2026-05-06 7:40 ` Philippe Gerum
2026-04-13 19:45 Jay Sridharan
2026-03-31 22:52 Brandon Ho
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