Date: Wed, 7 Sep 2016 20:05:10 +0000 (UTC) From: Alexander Motin <mav@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r305561 - head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs Message-ID: <201609072005.u87K5ADp052196@repo.freebsd.org>
next in thread | raw e-mail | index | archive | help
Author: mav Date: Wed Sep 7 20:05:10 2016 New Revision: 305561 URL: https://svnweb.freebsd.org/changeset/base/305561 Log: MFV r305560: 7278 tuning zfs_arc_max does not impact arc_c_min When changing zfs_arc_max (e.g. as zdb does), it may be set to less than the default arc_c_min. arc_c_min should decrease to not be more than arc_c_max, but it doesn't; therefore tuning of arc_c_max is ineffective. Reviewed by: Dan Kimmel <dan.kimmel@delphix.com> Reviewed by: Paul Dagnelie <paul.dagnelie@delphix.com> Reviewed by: Prakash Surya <prakash.surya@delphix.com> Reviewed by: Igor Kozhukhov <ikozhukhov@gmail.com> Author: Matthew Ahrens <mahrens@delphix.com> openzfs/openzfs@608764beadaf4bb71c5d8fe1818e8392ac66a61b Modified: head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/arc.c Directory Properties: head/sys/cddl/contrib/opensolaris/ (props changed) Modified: head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/arc.c ============================================================================== --- head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/arc.c Wed Sep 7 20:00:22 2016 (r305560) +++ head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/arc.c Wed Sep 7 20:05:10 2016 (r305561) @@ -6062,8 +6062,10 @@ arc_init(void) * Allow the tunables to override our calculations if they are * reasonable. */ - if (zfs_arc_max > arc_abs_min && zfs_arc_max < kmem_size()) + if (zfs_arc_max > arc_abs_min && zfs_arc_max < kmem_size()) { arc_c_max = zfs_arc_max; + arc_c_min = MIN(arc_c_min, arc_c_max); + } if (zfs_arc_min > arc_abs_min && zfs_arc_min <= arc_c_max) arc_c_min = zfs_arc_min; #endif
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?201609072005.u87K5ADp052196>