Brian Behlendorf 7e8bddd019 Update arc_memory_throttle() to check pageout ... This brings the behavior of arc_memory_throttle() back in sync with illumos. The updated memory throttling policy roughly goes like this: * Never throttle if more than 10% of memory is free. This threshold is configurable with the zfs_arc_lotsfree_percent module option. * Minimize any throttling of kswapd even when free memory is below the set threshold. Allow it to write out pages as quickly as possible to help alleviate the memory pressure. * Delay all other threads when free memory is below the set threshold in order to avoid compounding the memory pressure. Buffers will be evicted from the ARC to reduce the issue. The Linux specific zfs_arc_memory_throttle_disable module option has been removed in favor of the existing zfs_arc_lotsfree_percent tuning. Setting zfs_arc_lotsfree_percent=0 will have the same effect as zfs_arc_memory_throttle_disable and it was therefore redundant. Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Closes #3637		2015-07-30 11:52:12 -07:00
..
Makefile.am	Initial attempt to document events and payloads.	2014-07-25 11:58:36 -07:00
vdev_id.conf.5	vdev_id: support per-channel slot mappings	2014-01-17 11:17:54 -08:00
zfs-events.5	man: fix spelling mistakes in manual	2015-07-01 10:58:31 -07:00
zfs-module-parameters.5	Update arc_memory_throttle() to check pageout	2015-07-30 11:52:12 -07:00
zpool-features.5	Illumos 5027 - zfs large block support	2015-05-11 12:23:16 -07:00