Subject: Re: hd tuning
To: Pavel Cahyna <pavel.cahyna@st.ms.mff.cuni.cz>
From: Wojciech Puchar <wojtek@tensor.3miasto.net>
List: port-i386
Date: 06/01/2003 10:46:21
> > > > configure for the highest throughput supported by both devices."
> > >
> > > Interesting, how come Linux beats NetBSD at the HD performance on i386
> > > in _all_ cases?
> >
> > i can get max 7.5MB/s with linux from my machine (pentium 133, intel TX,
> > 5400 HDD) doing lot of work with hdparm.
> >
> > generic NetBSD kernel just gives 16MB/s with less CPU load.
>
> Are you both talking about raw disk performance (using dd) or
> performance when using a filesystem? I suppose those are two totally
> different things.
>
16MB raw

about 15 filesystem read

about 10 filesystem write (8kB blocks)