Author: markj
Date: Tue Apr 10 13:56:06 2018
New Revision: 332365

  Set zfs_arc_free_target to v_free_target.
  Page daemon output is now regulated by a PID controller with a setpoint
  of v_free_target. Moreover, the page daemon now wakes up regularly
  rather than waiting for a wakeup from another thread. This means that
  the free page count is unlikely to drop below the old
  zfs_arc_free_target value, and as a result the ARC was not readily
  freeing pages under memory pressure. Address the immediate problem by
  updating zfs_arc_free_target to match the page daemon's new behaviour.
  Reported and tested by:       truckman
  Discussed with:       jeff
  X-MFC with:   r329882
  Differential Revision:


Modified: head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/arc.c
--- head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/arc.c   Tue Apr 10 
13:47:09 2018        (r332364)
+++ head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/arc.c   Tue Apr 10 
13:56:06 2018        (r332365)
@@ -389,7 +389,7 @@ static void
 arc_free_target_init(void *unused __unused)
-       zfs_arc_free_target = (vm_cnt.v_free_min / 10) * 11;
+       zfs_arc_free_target = vm_cnt.v_free_target;
     arc_free_target_init, NULL);
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