On Tuesday 16 March 2010 6:17:22 pm Kip Macy wrote: > Author: kmacy > Date: Tue Mar 16 22:17:21 2010 > New Revision: 205231 > URL: http://svn.freebsd.org/changeset/base/205231 > > Log: > - reduce contention by breaking up ARC state locks in to 16 for data > and 16 for metadata > - export L2ARC tunables as sysctls > - add several kstats to track L2ARC state more precisely > - avoid holding a contended lock when atomically incrementing a > contended counter (no lock protection needed for atomics) > > Modified: > head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/arc.c > head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/arc.h > > Modified: head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/arc.c > ============================================================================== > --- head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/arc.c Tue Mar 16 21:44:21 2010 (r205230) > +++ head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/arc.c Tue Mar 16 22:17:21 2010 (r205231) > @@ -131,6 +131,7 @@ > #include <sys/kstat.h> > #include <sys/sdt.h> > > +#include <sys/ktr.h> > #include <vm/vm_pageout.h> > > static kmutex_t arc_reclaim_thr_lock; > @@ -186,6 +187,11 @@ SYSCTL_QUAD(_vfs_zfs, OID_AUTO, arc_min, > SYSCTL_INT(_vfs_zfs, OID_AUTO, mdcomp_disable, CTLFLAG_RDTUN, > &zfs_mdcomp_disable, 0, "Disable metadata compression"); > > +#ifdef ZIO_USE_UMA > +extern kmem_cache_t *zio_buf_cache[]; > +extern kmem_cache_t *zio_data_buf_cache[]; > +#endif > + > /* > * Note that buffers can be in one of 6 states: > * ARC_anon - anonymous (discussed below) > @@ -218,13 +224,31 @@ SYSCTL_INT(_vfs_zfs, OID_AUTO, mdcomp_di > * second level ARC benefit from these fast lookups. > */ > > +#define ARCS_LOCK_PAD 128
Please use CACHE_LINE_SIZE instead of hardcoding 128. -- John Baldwin _______________________________________________ svn-src-head@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"
