Sorry if this is beating a dead horse since you've already checked ... I believe there are (at least) three different "speed" 80-conductor ide cables -- ATA66, ATA100, and ATA133. They are not always labeled, so it can be hard to tell. My "slow" cable was a left over from an old machine and it was not labeled at all.
--- "Karsten M. Self" <[EMAIL PROTECTED]> wrote: > on Thu, Jul 08, 2004 at 07:28:19AM -0700, Richard Weil > ([EMAIL PROTECTED]) wrote: > > > --- "Karsten M. Self" <[EMAIL PROTECTED]> wrote: > > > I'm trying to find out why my disk performance is so slow -- 150x > > > worse than a comperable system -- and what I can do to improve > it. > > > > > > I've got a system with a painfully slow disk. The worse as it's > > > serving as a Samba server for a small domain (ten workstations). > > > Saturated 802.1g WiFi is disk-starved presently. System response > > > under any I/O load is glacial. 'top' routinely reports load > > > averages of from 2 to 10+ with 99% idle CPU. Memory utilization > is > > > generally nominal, and was *not* an issue in the tests below, > though > > > disk performance pretty much precisely sucked. > > <...> > > > If this isn't a problem that suddenly manifested itself, > > I don't believe it is, though I didn't take measurements right at the > start. It's certainly been slow for a couple of months, though just > how > bad wasn't readily apparent until I really looked at it. The system > itself is hardly older than that. > > > it might be the ide cable to the drive. > > If you're talking about the 40 vs. 80 conductor drive cables, it's > the > latter. That's among the first things I checked last night. > > > I had a drive running slowly (a Maxtor, too) and just got a big > > improvement in it's performance by using a new cable. I got a round > > ATA133 cable for $4.00 and the drive's performance radically > improved. > > This is flat 80-conductor cable. > > > I knew it was the cable, though, because the drive had been running > > fast in a nearly identical system with the only real difference > being > > the cable. Also, though you probably know more about than I do, the > -I > > flag of hdparm is pretty useful for info. > > Trying to interpret all of that, but yeah. > > > Richard > > Thanks. > > > > > The results may be seen at: > > > > > > http://linuxmafia.com/~karsten/slow-drive/ > > > > > > Comparative results for a fast system similarly configured (but > > > different HW) is at > > > > > > http://linuxmafia.com/~karsten/slow-drive/fast-drive.tar.gz > > > Peace. > > -- > Karsten M. Self <[EMAIL PROTECTED]> > http://kmself.home.netcom.com/ > What Part of "Gestalt" don't you understand? > Curses, like chickens, come home to roost. > > ATTACHMENT part 2 application/pgp-signature name=signature.asc __________________________________ Do you Yahoo!? Yahoo! Mail is new and improved - Check it out! http://promotions.yahoo.com/new_mail -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
