Re: file write performance drop between 2.5.60 and 2.5.70

From: Mike Fedyk (mfedyk@matchmail.com)
Date: Thu Jun 05 2003 - 13:37:02 EST


On Wed, Jun 04, 2003 at 08:02:39PM +0200, Felipe Alfaro Solana wrote:
> On Wed, 2003-06-04 at 18:17, Vladimir Saveliev wrote:
> > Hi
> >
> > It looks like file write performance dropped somewhere between 2.5.60 and
> > 2.5.70.
> > Doing
> > time dd if=/dev/zero of=file bs=4096 count=60000
> >
> > on a box with Xeon(TM) CPU 2.40GHz and 1gb of RAM
> > I get for ext2
> > 2.5.60: real 1.42 sys 0.77
> > 2.5.70: real 1.73 sys 1.23
> > for reiserfs
> > 2.5.60: real 1.62 sys 1.56
> > 2.5.70: real 1.90 sys 1.86
> >
> > Any ideas of what could cause this drop?
>
> What filesystem are you using?

Good one.

ext2 and reiserfs.

Read the origional message again.
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/



This archive was generated by hypermail 2b29 : Sat Jun 07 2003 - 22:00:28 EST