Re: [gentoo-user] XFS FileSystem - Slow Writes

[Ow Mun Heng <Ow.Mun.Heng@wdc.com>]

On Tue, 2006-08-29 at 18:11 +1200, Mark Kirkwood wrote:
> Ow Mun Heng wrote:
> > Has anyone here, who uses XFS fs, experiencing slow filesystem writes?
> > I'm seeing throughput of like 4-3MB/s instead of like previously
> > 15-20MB/s. 
> > I have read that there was some thing about "barriers" and I've tried
> > re-mounting the FS w/ "nobarriers" but the performance didn't improve.
> > 
> > I've already fscked the fs w/ the latest xfsprogs (> 2.8.0) to no good
> > effect.
> > 
> > Anyone has any clue or suggestions? Else, I'm gonna go and change the FS
> > back to EXT3.
> > 
> > BTW: it's my /home which is XFS which houses GIGs of Mbox files as well
> > as VMware images.
> > 
> > 
> 
> What is your kernel version? (could be important).

I've already updated it to the latest based on the suspend2 version.
$uname -r
2.6.17-suspend2-r4

$eix xfsprogs
     Available versions:  2.7.3 2.7.11 2.8.10
     Installed:           2.8.10


> 
> I'm using 2.7.11 on kernel 2.6.16, write performance is reasonably good 

If not mistaken, the issue, (or barriers if not mistaken) was introduced
in the 2.6.17 kernel series.
the 2.6.16 series wasn't affected. (I could be wrong, I don't have net
access so, I can't verify)

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