On Mon, 2005-10-24 at 22:43 -0200, Bruno Buys wrote: > 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.
On my system, the SATA drive is sightly faster, but that's just it: slightly. On your system, it's 4.9% slower. Maybe the drivers for your SATA aren't up to snuff? Maybe that Samsung SATA drive has ineffcient microcode... Abit KV-81 IDE - via82cxxx SATA - sata_via hda - WD 2500JB-00GVA0 - IDE 250GB sda - Maxtor 7L300S0 - SATA # hdparm -Tt /dev/hda /dev/hda: Timing cached reads: 2392 MB in 2.00 seconds = 1194.99 MB/sec Timing buffered disk reads: 174 MB in 3.03 seconds = 57.43 MB/sec [EMAIL PROTECTED]:~# hdparm -Tt /dev/hda # hdparm -Tt /dev/sda /dev/sda: Timing cached reads: 2408 MB in 2.00 seconds = 1202.98 MB/sec HDIO_DRIVE_CMD(null) (wait for flush complete) failed: Inappropriate ioctl for device Timing buffered disk reads: 184 MB in 3.01 seconds = 61.12 MB/sec HDIO_DRIVE_CMD(null) (wait for flush complete) failed: Inappropriate ioctl for device -- ----------------------------------------------------------------- Ron Johnson, Jr. Jefferson, LA USA PGP Key ID 8834C06B I prefer encrypted mail. I like my women like I like my coffee - purchased at above-market rates from eco-friendly organic farming cooperatives in Latin America. -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
