File system performance

[David Dawes]

In article <2239 at jwt.UUCP> john at jwt.UUCP (John Temples) writes:
>In article <1990Nov03.193936.665 at virtech.uucp> cpcahil at virtech.UUCP (Conor P. Cahill) writes:
>>If the ESIX ffs is a BSD file system, the file system code will only
>>allow the super user to write to the last 10% of the partition.
>
>Yes, this is how the ESIX FFS works.  The 10% figure is a default
>which can be configured when you make the file system.

I have found that ESIX FFS with less than 10% free space can still be written
to by a non-super user.  ffsdump shows the minfree parameter, but it doesn't
seem to be doing anything.  Also all BSD df's I've seen show disk usage as a
percentage of (total space - min free space) -- so the max usage is 110% for
the default minfree.  Esix df doesn't work like this.

David
--
------------------------------------------------------------------------------
 David Dawes (dawes at suphys.physics.su.oz.au) DoD#210   | Phone: +612 692 2639
 School of Physics, University of Sydney, Australia    | Fax:   +612 660 2903
------------------------------------------------------------------------------