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Commit 7a9e6da1 authored by Petr Oros's avatar Petr Oros Committed by Jiri Kosina
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doc: fix incorrect formula to calculate CommitLimit value 



The formula to calculate "CommitLimit" value mentioned in kernel documentation is incorrect.
Right formula is: CommitLimit = ([total RAM pages] - [total huge TLB pages]) * overcommit_ratio / 100 + [total swap pages]

Signed-off-by: default avatarPetr Oros <poros@redhat.com>
Acked-by: default avatarRandy Dunlap <rdunlap@infradead.org>
Signed-off-by: default avatarJiri Kosina <jkosina@suse.cz>
parent 221069be

Documentation/filesystems/proc.txt

+2 −1
Original line number Diff line number Diff line
@@ -854,7 +854,8 @@ WritebackTmp: Memory used by FUSE for temporary writeback buffers 
              if strict overcommit accounting is enabled (mode 2 in

              'vm.overcommit_memory').

              The CommitLimit is calculated with the following formula:

              CommitLimit = ('vm.overcommit_ratio' * Physical RAM) + Swap

              CommitLimit = ([total RAM pages] - [total huge TLB pages]) *

                             overcommit_ratio / 100 + [total swap pages]

              For example, on a system with 1G of physical RAM and 7G

              of swap with a `vm.overcommit_ratio` of 30 it would

              yield a CommitLimit of 7.3G.