linux/Documentation/device-mapper
Mike Snitzer bccab6a01a dm cache: switch the "default" cache replacement policy from mq to smq
The Stochastic multiqueue (SMQ) policy (vs MQ) offers the promise of
less memory utilization, improved performance and increased adaptability
in the face of changing workloads.  SMQ also does not have any
cumbersome tuning knobs.

Users may switch from "mq" to "smq" simply by appropriately reloading a
DM table that is using the cache target.  Doing so will cause all of the
mq policy's hints to be dropped.  Also, performance of the cache may
degrade slightly until smq recalculates the origin device's hotspots
that should be cached.

In the future the "mq" policy will just silently make use of "smq" and
the mq code will be removed.

Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Acked-by: Joe Thornber <ejt@redhat.com>
2015-06-17 12:40:38 -04:00
..
cache-policies.txt dm cache: switch the "default" cache replacement policy from mq to smq 2015-06-17 12:40:38 -04:00
cache.txt dm cache: add fail io mode and needs_check flag 2015-06-11 17:13:00 -04:00
delay.txt
dm-crypt.txt dm crypt: update URLs to new cryptsetup project page 2015-04-15 12:10:24 -04:00
dm-flakey.txt dm flakey: add corrupt_bio_byte feature 2011-08-02 12:32:06 +01:00
dm-io.txt
dm-log.txt dm log userspace: fix comment hyphens 2011-10-31 20:21:22 +00:00
dm-queue-length.txt dm mpath: add queue length load balancer 2009-06-22 10:12:27 +01:00
dm-raid.txt dm raid: add support for the MD RAID0 personality 2015-05-29 14:19:00 -04:00
dm-service-time.txt Fix common misspellings 2011-03-31 11:26:23 -03:00
dm-uevent.txt
era.txt dm: add era target 2014-03-27 16:56:23 -04:00
kcopyd.txt
linear.txt
log-writes.txt dm: add log writes target 2015-04-15 12:10:24 -04:00
persistent-data.txt Documentation: Fix multiple typo in Documentation 2012-03-07 16:08:24 +01:00
snapshot.txt dm: document when snapshot has finished merging 2010-03-06 02:29:56 +00:00
statistics.txt dm: add statistics support 2013-09-05 20:46:06 -04:00
striped.txt dm stripe: support for non power of 2 chunksize 2012-07-27 15:08:01 +01:00
switch.txt dm switch: fix Documentation to use plain text 2015-03-31 12:03:49 -04:00
thin-provisioning.txt dm thin: remove stale 'trim' message documentation 2015-04-15 12:10:22 -04:00
verity.txt dm crypt: update URLs to new cryptsetup project page 2015-04-15 12:10:24 -04:00
zero.txt