Date: Sun, 24 May 2009 03:49:07 +0000 (UTC) From: Kip Macy <kmacy@FreeBSD.org> To: src-committers@freebsd.org, svn-src-user@freebsd.org Subject: svn commit: r192676 - user/kmacy/releng_7_2_fcs/sys/cddl/contrib/opensolaris/uts/common/fs/zfs Message-ID: <200905240349.n4O3n7nk076257@svn.freebsd.org>
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Author: kmacy Date: Sun May 24 03:49:07 2009 New Revision: 192676 URL: http://svn.freebsd.org/changeset/base/192676 Log: try allowing the arc to grow while still permitting backpressure Modified: user/kmacy/releng_7_2_fcs/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/arc.c Modified: user/kmacy/releng_7_2_fcs/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/arc.c ============================================================================== --- user/kmacy/releng_7_2_fcs/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/arc.c Sun May 24 03:22:49 2009 (r192675) +++ user/kmacy/releng_7_2_fcs/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/arc.c Sun May 24 03:49:07 2009 (r192676) @@ -1822,14 +1822,15 @@ arc_reclaim_needed(void) #ifdef _KERNEL if (needfree) return (1); - + if (arc_size > arc_c_max) + return (1); if (arc_size <= arc_c_min) return (0); /* * If pages are needed and we're using more than half * of kmem ... be charitable */ - if (vm_pages_needed && (arc_size > kmem_size()/2)) + if (vm_pages_needed && (arc_size > (kmem_size()*2)/3)) return (1); #if 0 @@ -3431,8 +3432,14 @@ arc_init(void) /* Convert seconds to clock ticks */ arc_min_prefetch_lifespan = 1 * hz; +#ifdef __amd64__ + /* Start out with 1/8 of all memory */ + arc_c = (physmem*PAGE_SIZE) / 8; + +#else /* Start out with 1/8 of all memory */ arc_c = kmem_size() / 8; +#endif #if 0 #ifdef _KERNEL /*
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