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 <de...@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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