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The default value of MINFREE is defined to be 8% in

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ufs/ffs/fs.h and not 10%.  The newfs(8) and tunefs(8)
man pages had this change already, but fs(5) did not.
This change makes it consistent again.

Bump Dd.

PR:             204929
Submitted by:   amutu@amutu.com
MFC after:      3 days
Sponsored by:   Essen Linuxhotel Hackathon 2016
This commit is contained in:
Benedict Reuschling 2016-04-23 20:45:52 +00:00
parent 039b877ef0
commit df0501a299
1 changed files with 4 additions and 4 deletions
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8
share/man/man5/fs.5
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@ -28,7 +28,7 @@
.\" @(#)fs.5 8.2 (Berkeley) 4/19/94 .\" @(#)fs.5 8.2 (Berkeley) 4/19/94
.\" $FreeBSD$ .\" $FreeBSD$
.\" .\"
.Dd October 31, 2006 .Dd April 23, 2016
.Dt FS 5 .Dt FS 5
.Os .Os
.Sh NAME .Sh NAME
@ -262,7 +262,7 @@ however severe performance degradations will be observed if the
file system is run at greater than 90% full; thus the default file system is run at greater than 90% full; thus the default
value of value of
.Fa fs_minfree .Fa fs_minfree
is 10%. is 8%.
.Pp .Pp
Empirically the best trade-off between block fragmentation and Empirically the best trade-off between block fragmentation and
overall disk utilization at a loading of 90% comes with a overall disk utilization at a loading of 90% comes with a
@ -274,10 +274,10 @@ The element
specifies whether the file system should try to minimize the time spent specifies whether the file system should try to minimize the time spent
allocating blocks, or if it should attempt to minimize the space allocating blocks, or if it should attempt to minimize the space
fragmentation on the disk. fragmentation on the disk.
If the value of fs_minfree (see above) is less than 10%, If the value of fs_minfree (see above) is less than 8%,
then the file system defaults to optimizing for space to avoid then the file system defaults to optimizing for space to avoid
running out of full sized blocks. running out of full sized blocks.
If the value of minfree is greater than or equal to 10%, If the value of minfree is greater than or equal to 8%,
fragmentation is unlikely to be problematical, and fragmentation is unlikely to be problematical, and
the file system defaults to optimizing for time. the file system defaults to optimizing for time.
.Pp .Pp