I have an IBM UDMA100 drive (45GB) and 8.0b3 installed. My motherboard
supports UDMA100. I get a speed of around 33MB/sec for the buffered disk
reads. I have tried all the different settings of hdparm and that is the
best I can do. Am I missing something? Am I not suppose to get
theoretically 100MB/sec? I know the 100MB/sec is almost never reached, but
it shouled be a lot higher than just 33MB/sec. Are there settings I do not
know about? TIA.
On Mon, 9 Apr 2001, Civileme wrote:
> First of all, unless you have the newest kernel, 6.1 does NOT support ata/66
> or ata/100.
>
> Second, try hdparm settings like
>
> hdparm -u1 -c1 -d1 -m8 -a8 -X66 /dev/hda # or hdc or wherever you have these
> hdds.
>
> check before with three tries of
>
> hdparm -t /dev/hda
>
> only the third result is likely to be meaningful.
> (no other programs running, especially none using disk cache)
>
> And again after the hdparm setting (and a 2 minute wait), try three times
> with hdparm -t ...
>
> You may see a performance improvement.
>
>
> Third, if you have WD drives, don't bother. They seem to run better at
> ATA/33 and they do comply with the ECC for that level (sort-of) while they
> fake it for higher speeds. On the other hand, running WDs at 66 or 100 often
> results in geometry misrecognition, massive data corruption, kernel panic on
> boot, and destruction of data for other drives on the same channel with
> timing chatter.
>
> Civileme
>
>
> On Monday 09 April 2001 07:57, you wrote:
> > Check the hdparm settings.
> >
> > Moose
> >
> > -----Original Message-----
> > From: Michael Falzon [mailto:[EMAIL PROTECTED]]
> > Sent: Monday, April 09, 2001 10:22 AM
> > To: [EMAIL PROTECTED]
> > Subject: [newbie] Slow hdd access
> >
> >
> > hi all
> > I'm runing mandrake 6.1 with a ata 100 m/b and ata 66 hdd i'm sure
> > that the drive is not way running up to speed, how do i set it up to run
> > faster
> > ( i have try to use webadmin it ok till i have to reboot )
> >
> > Michael Falzon
> > Last Of The BBs Sysop
> > Mozy's Swamp BBs & Red Dwarf BBs
> > http://mozysswamp.yi.org <http://mozysswamp.yi.org>
> > Registered Linux user #204397
>
