xfs
[Top] [All Lists]

Re: performance degraded 2.4.8 -> 2.4.9?

To: Dan Yocum <yocum@xxxxxxxx>
Subject: Re: performance degraded 2.4.8 -> 2.4.9?
From: Austin Gonyou <austin@xxxxxxxxxxxxxxx>
Date: 13 Nov 2001 18:15:24 -0600
Cc: xfs-list <linux-xfs@xxxxxxxxxxx>
In-reply-to: <3BF1A6F2.273B49C4@fnal.gov>
References: <3BF1A6F2.273B49C4@fnal.gov>
Sender: owner-linux-xfs@xxxxxxxxxxx
I don't know if you can, but I'd suggest using either 2.4.14 or 2.4.15
when it's ready since the loopback bug will be fixed in that version. 

On Tue, 2001-11-13 at 17:04, Dan Yocum wrote:
> Hi all, 
> 
> What happened between 2.4.8 and 2.4.9 that the disk I/O performance
> would
> *dramatically* drop?  With 2.4.8 I'm getting ~34MB/s writes and ~160MB/s
> reads.  As of 2.4.9 this has dropped to ~10MB/s writes and 80-100MB/s
> reads.  That's pretty bad.  The problem was not fixed with 2.4.10 and is
> still the same as of 2.4.13pre6 - I haven't checked the latest in a
> couple
> weeks, maybe it's better?
> 
> I've decided to drop back to 2.4.5 since 2.4.8 was regularly crashing
> the
> machines, the "kernel: __alloc_pages: 3-order allocation failed." errors
> seem to have gone away, and the performance is right up there.  
> 
> 
> Cheers,
> Dan
> 
> --  
> Dan Yocum
> Sloan Digital Sky Survey, Fermilab  630.840.6509
> yocum@xxxxxxxx, http://www.sdss.org
> SDSS.  Mapping the Universe.
-- 
Austin Gonyou
Systems Architect, CCNA 
Coremetrics, Inc.
Phone: 512-796-9023
email: austin@xxxxxxxxxxxxxxx


<Prev in Thread] Current Thread [Next in Thread>