Re: IDE hdd faster than sata? How come?

[Bruno Buys <brunobuys@gmail.com>]

Ron Johnson wrote:

> On Mon, 2005-10-24 at 18:25 -0200, Bruno Buys wrote:
>  
>
> > How good is hdparm benchmark for sata? What am I missing here?
> >
> >
> > frank:/home/bruno# hdparm -Tt /dev/sda
> >
> > /dev/sda:
> > Timing cached reads:   2368 MB in  2.00 seconds = 1183.00 MB/sec
> > Timing buffered disk reads:  170 MB in  3.01 seconds =  56.56 MB/sec
> >
> >
> > frank:/home/bruno# hdparm -Tt /dev/hda
> >
> > /dev/hda:
> > Timing cached reads:   2352 MB in  2.00 seconds = 1176.18 MB/sec
> > Timing buffered disk reads:  180 MB in  3.03 seconds =  59.47 MB/sec
> >
> >
> > IDE disk is SAMSUNG SP0802N, FwRev=TK200-04. 80GB. udma5.
> > Sata is SAMSUNG SP0812C SATA 80GB.
> >
> >
> > The only thing I found was in samsung website "The drive comes defaulted 
> > to udma100. To enable udma133 refer to www.samsung.com.br". So far, 
> > www.samsung.com.br gives me nothing.
> >
> > Does anybody have a clue?
> >    
>
> Was it a quiet system, with nothing else running at that moment?
>
>  
I guess. There was no X and DE running. I run hdparm a few times, with 
similar results. But since it fails to talk to the sata disk for lots of 
other commands, i'm begining to suspect this benchmark feature...
I also tested the jumpers, but they are irrelevant for the sata disk.