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mirror_ubuntu-kernels/Documentation/admin-guide/sysctl
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Suren Baghdasaryan a7d23b1355 mm/pagealloc: sysctl: change watermark_scale_factor max limit to 30% 
BugLink: https://bugs.launchpad.net/bugs/1988479

[ Upstream commit 39c65a94cd ]

For embedded systems with low total memory, having to run applications
with relatively large memory requirements, 10% max limitation for
watermark_scale_factor poses an issue of triggering direct reclaim every
time such application is started.  This results in slow application
startup times and bad end-user experience.

By increasing watermark_scale_factor max limit we allow vendors more
flexibility to choose the right level of kswapd aggressiveness for their
device and workload requirements.

Link: https://lkml.kernel.org/r/20211124193604.2758863-1-surenb@google.com
Signed-off-by: Suren Baghdasaryan <surenb@google.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Lukas Middendorf <kernel@tuxforce.de>
Cc: Antti Palosaari <crope@iki.fi>
Cc: Luis Chamberlain <mcgrof@kernel.org>
Cc: Kees Cook <keescook@chromium.org>
Cc: Iurii Zaikin <yzaikin@google.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Zhang Yi <yi.zhang@huawei.com>
Cc: Fengfei Xi <xi.fengfei@h3c.com>
Cc: Mike Rapoport <rppt@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>
2022-09-16 10:53:10 +02:00
..
abi.rst docs: admin-guide: sysctl: avoid using ReST :doc:foo markup 2021-06-17 13:24:36 -06:00
fs.rst Update Documentation/admin-guide/sysctl/fs.rst 2021-01-28 15:45:10 -07:00
index.rst
kernel.rst random: fix sysctl documentation nits 2022-08-10 09:23:07 +02:00
net.rst powerpc updates for 5.13 2021-04-30 12:22:28 -07:00
sunrpc.rst
user.rst time/namespace: Add max_time_namespaces ucount 2020-04-07 12:37:21 +02:00
vm.rst mm/pagealloc: sysctl: change watermark_scale_factor max limit to 30% 2022-09-16 10:53:10 +02:00