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| author |   Petr Oros <poros@redhat.com> | 2014-05-22 14:04:44 +0200 |
|---|---|---|
| committer |   Jiri Kosina <jkosina@suse.cz> | 2014-05-22 23:01:55 +0200 |
| commit | 7a9e6da11c9478741947de3a37ac7de26abd23f0 (patch) | |
| tree | e80b0918bec7a76b4262e76900000d83e4cb4304 /Documentation/filesystems | |
| parent | doc: Note need of bc in the kernel build from 3.10 onwards (diff) | |
| download | linux-dev-7a9e6da11c9478741947de3a37ac7de26abd23f0.tar.xz linux-dev-7a9e6da11c9478741947de3a37ac7de26abd23f0.zip | |
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: Petr Oros <poros@redhat.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Diffstat (limited to 'Documentation/filesystems')
| -rw-r--r-- | Documentation/filesystems/proc.txt | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/Documentation/filesystems/proc.txt b/Documentation/filesystems/proc.txt index d4fa7f52034e..324328d18464 100644 --- a/Documentation/filesystems/proc.txt +++ b/Documentation/filesystems/proc.txt @@ -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. |