Author: mav
Date: Sun Apr 5 14:45:52 2015
New Revision: 281109
URL: https://svnweb.freebsd.org/changeset/base/281109
Log:
Add DTrace probe to the new ARC reclaim cause added in r281026.
MFC after: 1 month
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 Sun Apr 5
14:17:26 2015 (r281108)
+++ head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/arc.c Sun Apr 5
14:45:52 2015 (r281109)
@@ -2671,8 +2671,12 @@ arc_reclaim_needed(void)
* Above limits know nothing about real level of KVA fragmentation.
* Start aggressive reclamation if too little sequential KVA left.
*/
- if (vmem_size(heap_arena, VMEM_MAXFREE) < zfs_max_recordsize)
+ if (vmem_size(heap_arena, VMEM_MAXFREE) < zfs_max_recordsize) {
+ DTRACE_PROBE2(arc__reclaim_maxfree, uint64_t,
+ vmem_size(heap_arena, VMEM_MAXFREE),
+ uint64_t, zfs_max_recordsize);
return (1);
+ }
#else /* _KERNEL */
if (spa_get_random(100) == 0)
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