Date: Fri, 31 Aug 2018 21:45:06 +0000 (UTC) From: Mark Johnston <markj@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r338416 - head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs Message-ID: <201808312145.w7VLj6pp059159@repo.freebsd.org>
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Author: markj Date: Fri Aug 31 21:45:05 2018 New Revision: 338416 URL: https://svnweb.freebsd.org/changeset/base/338416 Log: Re-compute the ARC size before computing the MFU target. This fixes an upstream regression introduced in r331404, causing overly aggressive reclamation of the ARC when under pressure. Diagnosed by: Paul <devgs@ukr.net> Approved by: re (gjb) MFC after: 3 days Modified: head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/arc.c Modified: head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/arc.c ============================================================================== --- head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/arc.c Fri Aug 31 18:26:37 2018 (r338415) +++ head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/arc.c Fri Aug 31 21:45:05 2018 (r338416) @@ -4447,6 +4447,12 @@ arc_adjust(void) } /* + * Re-sum ARC stats after the first round of evictions. + */ + asize = aggsum_value(&arc_size); + ameta = aggsum_value(&arc_meta_used); + + /* * Adjust MFU size * * Now that we've tried to evict enough from the MRU to get its
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