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author | pav <pav@FreeBSD.org> | 2007-05-12 15:33:18 +0000 |
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committer | pav <pav@FreeBSD.org> | 2007-05-12 15:33:18 +0000 |
commit | 3d3739b1a428e9ba779209dad57a67c775e02302 (patch) | |
tree | c85496431f0b63baa5e9cfebd6c35b63d4e5b050 /share/man/man4/md.4 | |
parent | 15acba9364cdb9cbe5a5d43c8c3db93293a9b992 (diff) | |
download | FreeBSD-src-3d3739b1a428e9ba779209dad57a67c775e02302.zip FreeBSD-src-3d3739b1a428e9ba779209dad57a67c775e02302.tar.gz |
Talk more about swap backing
PR: docs/78041 (inspired by)
Submitted by: Lars Kristiansen <lars+lister.freebsd@adventuras.no>
MFC after: 1 week
Diffstat (limited to 'share/man/man4/md.4')
-rw-r--r-- | share/man/man4/md.4 | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/share/man/man4/md.4 b/share/man/man4/md.4 index f13de64..7fa8e5c 100644 --- a/share/man/man4/md.4 +++ b/share/man/man4/md.4 @@ -50,7 +50,14 @@ A regular file is used as backing store. This allows for mounting ISO images without the tedious detour over actual physical media. .It Cm swap -Backing store is allocated from swap space. +Backing store is allocated from buffer memory. +Pages get pushed out to the swap when the system is under memory +pressure, otherwise they stay in the operating memory. +Using +.Cm swap +backing is generally preferable over +.Cm malloc +backing. .El .Pp For more information, please see |