Messages in this thread | ![/](/images/icornerl.gif) | | Date | Tue, 30 Dec 2003 12:21:19 +0100 | From | Nuno Alexandre <> | Subject | Re: IDE-RAID Drive Performance |
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On Tue, 30 Dec 2003 11:44:01 +0100 Mr(s): Nicklas Bondesson wrote:
> Hi! > > I think i'm getting really bad values from my disks. It's two Western > Digital WD800JB-00DUA3 (Special Edition 8 MB cache) disks connected to a > Promise TX2000 (PDC20271) card (RAID1 using ataraid under Linux 2.4.23). > > The disks are setup with hdparm at boot time: > > /sbin/hdparm -X69 -d1 -u1 -m16 -c3 /dev/hda > /sbin/hdparm -X69 -d1 -u1 -m16 -c3 /dev/hdc > > When running hdparm -tT I get the following: > > /dev/hda: > Timing buffer-cache reads: 128 MB in 1.13 seconds =113.27 MB/sec > Timing buffered disk reads: 64 MB in 2.46 seconds = 26.02 MB/sec > > /dev/hdc: > Timing buffer-cache reads: 128 MB in 1.13 seconds =113.27 MB/sec > Timing buffered disk reads: 64 MB in 2.47 seconds = 25.91 MB/sec > > Are these normal values? I don't think so. Please advise. > > /Nicke
Hi. This is what i get with a Maxtor 6Y120L0 (2MB cache):
/dev/hda: Timing buffer-cache reads: 1320 MB in 2.00 seconds = 659.44 MB/sec Timing buffered disk reads: 140 MB in 3.02 seconds = 46.40 MB/sec
Using: -d1 -u1 -m16 -c3 -W1 -A1 -k1 -X70 -a 8192
I'm not using raid, its a single disk connected to IDE1 on the motherboard.
Maybe you can try those parameters and see if it helps :) -- Best regards - Nuno Alexandre - na@imaginere.dk Gpg: EA74637D - http://imaginere.dk - iM:ikaro@jabber.org [unhandled content-type:application/pgp-signature] | ![\](/images/icornerr.gif) |