Date: Mon, 21 Dec 2009 08:50:36 -0500 From: John Baldwin <jhb@freebsd.org> To: Kip Macy <kmacy@freebsd.org> Cc: src-committers@freebsd.org, svn-src-user@freebsd.org Subject: Re: svn commit: r200762 - user/kmacy/releng_8_fcs_buf_xen/sys/cddl/contrib/opensolaris/uts/common/fs/zfs Message-ID: <200912210850.36446.jhb@freebsd.org> In-Reply-To: <200912210310.nBL3ARvY082294@svn.freebsd.org> References: <200912210310.nBL3ARvY082294@svn.freebsd.org>
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On Sunday 20 December 2009 10:10:27 pm Kip Macy wrote: > Author: kmacy > Date: Mon Dec 21 03:10:26 2009 > New Revision: 200762 > URL: http://svn.freebsd.org/changeset/base/200762 > > Log: > align hash table locks > > Modified: > user/kmacy/releng_8_fcs_buf_xen/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/arc.c > > Modified: user/kmacy/releng_8_fcs_buf_xen/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/arc.c > ============================================================================== > --- user/kmacy/releng_8_fcs_buf_xen/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/arc.c Sun Dec 20 22:55:27 2009 (r200761) > +++ user/kmacy/releng_8_fcs_buf_xen/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/arc.c Mon Dec 21 03:10:26 2009 (r200762) > @@ -548,7 +548,7 @@ struct ht_lock { > typedef struct buf_hash_table { > uint64_t ht_mask; > arc_buf_hdr_t **ht_table; > - struct ht_lock ht_locks[BUF_LOCKS]; > + struct ht_lock ht_locks[BUF_LOCKS] __aligned(128); > } buf_hash_table_t; FYI, there is a CACHE_LINE_SIZE constant in <machine/param.h> you can use instead of hardcoding an x86-specific value. -- John Baldwin
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