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54126fdb5b
zfs_arc_shrinker_limit was introduced to avoid ARC collapse due to aggressive kernel reclaim. While useful, the current default (10000) is too prone to OOM especially when MGLRU-enabled kernels with default min_ttl_ms are used. Even when no OOM happens, it often causes too much swap usage. This patch sets zfs_arc_shrinker_limit=0 to not ignore kernel reclaim requests. ARC now plays better with both kernel shrinker and pagecache but, should ARC collapse happen again, MGLRU behavior can be tuned or even disabled. Anyway, zfs should not cause OOM when ARC can be released. Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Reviewed-by: Alexander Motin <mav@FreeBSD.org> Signed-off-by: Gionatan Danti <g.danti@assyoma.it> Closes #16909 |
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