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Re: IDE hdd faster than sata? How come?

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

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

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.

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