b32171ea5a
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: https://reviews.freebsd.org/D14994 |
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