Re: Miata, 6.1 and EIDE

["Wes Bauske" <wsb paralleldata com>]

Praveen Srinivasan wrote:
> 
> Well, I used hdparm -tT /dev/hdx to benchmark the drive. Is this wrong? Is there a
> better way to do it (namely yours)?
> 

I just use dd and if I write, /dev/zero as input and for read,
/dev/null for output. I also use a more realistic block size
for my my applications, either 64k or 128k.


Wes

> Praveen Srinivasan
> 
> Wes Bauske wrote:
> 
> > Praveen Srinivasan wrote:
> > >
> > > I don't know about Alphalinux, but I had a Promise Ultra66 controller in my x86
> > > machine with a Ultra66 capable HD, and the disk perfomance was pretty
> > > disappointing; it was about the same as the onboard IDE. People have speculated
> > > that the driver is at fault.
> > >
> >
> > I'm currently experimenting with large EIDE disks on
> > my Athlon which are UATA66 capable. Those devices and
> > the Athlon board can do 20MB/sec sequential read and write
> > between devices on separate IDE channels under RH6.0's
> > default kernel so if you're not seeing good performance,
> > suspect the Promise controller or your disk. Linux is
> > quite capable of very good UATA66 performance with the
> > proper HW. I was surprised by an aggregate thruput with
> > two devices of 40MB/sec sustained on EIDE. Those HW
> > engineers are doing a good job of giving SCSI a run for
> > the money. I bought 3 40GB EIDE disks for $900. Need to
> > try one on my XP1000 to see what Alpha Linux thinks
> > about them though. I don't believe either the DS10 or
> > XP1000 are UATA66 capable. Might be able to do UATA33
> > though. Anyone know?
> >
> > Wes
> >
> > --
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