Re: OT: performance problems.

[csj <csj@mindgate.net>]

On Mon, 7 Jan 2002 15:59:20 +0100
martin f krafft <madduck@madduck.net> wrote:

> also sprach Christoph Simon <ciccio@kiosknet.com.br> [2002.01.07.1547 +0100]:
> > > is this good or bad? hda2 is my swap partition:
> > 
> > This is bad (<1/6).
> 
> what do you mean?
> 
> > > /dev/hda2:
> > >  Timing buffer-cache reads:   128 MB in  0.99 seconds = 129.29 MB/sec
> > >  Timing buffered disk reads:  64  MB in 21.93 seconds =   2.92 MB/sec
> > 
> > /dev/hda1:
> >  Timing buffer-cache reads:   128 MB in  0.77 seconds =166.23 MB/sec
> >  Timing buffered disk reads:  64 MB in  3.33 seconds = 19.22 MB/sec
> 
> jealous! what's the RPM on your drive?

Are you sure it's something to get jealous over? I'm pretty sure I have
a 5400rpm 20GB drive (by Fujitsu). Look at my stats after I enabled DMA and
(some other kernel options I don't have at the tip of my finger right
now):

# hdparm -Tt /dev/hda

/dev/hda:
 Timing buffer-cache reads:   128 MB in  0.82 seconds =156.10 MB/sec
 Timing buffered disk reads:  64 MB in  2.99 seconds = 21.40 MB/sec

I've seen a discussion here some whiles back about a guy who got
33MB+/sec.