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Correct the example introduced in rev 1.29, which suggested a block:frag

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size ratio other than 8:1.  Currently, we only recommend an 8:1
ratio, because the impact of others ratios has not been adequately
investigated.

Also, do not recommend the use of the -c option in the example, since
newfs now automatically calculates the best cyl:cylgrp ratio.

This change was discussed with the author of rev 1.29.
This commit is contained in:
Sheldon Hearn 2001-11-27 17:01:17 +00:00
parent 116debb603
commit 2441e154ef
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=86987
1 changed files with 4 additions and 4 deletions
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8
sbin/newfs/newfs.8
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@ -271,14 +271,14 @@ This option is of historical importance only. Modern disks perform their own
bad sector allocation.
.El
.Sh EXAMPLES
.Dl newfs -b 16384 -f 4096 -c 100 /dev/ad3s1a
.Dl newfs -b 16384 -f 2048 /dev/ad3s1a
.Pp
Creates a new ufs file system on
.Pa ad3s1a .
.Nm
will use a block size of 16384 bytes, a fragement size of 4096 bytes
and have 100 cylinders per cylinder group rather than the defaults.
These values are tend to produce better performance than the defaults
will use a block size of 16384 bytes, a fragement size of 2048 bytes
and the largest possible number of cylinders per group.
These values tend to produce better performance than the defaults
for file systems larger than about 5 gigabytes.
.Sh SEE ALSO
.Xr fdformat 1 ,