Cheers,
Andre Hedrick
Linux Disk Certification Project Linux ATA Development
On Sun, 13 Jan 2002, Ian Morgan wrote:
> Andre (and the rest of the crowd),
>
> I really hate to be one to provide some negative news of your IDE patch,
> but here goes:
>
> I have been hearing very good things about your patch lately, so after
> having not tried it since the 2.4.1[0-3] days, I figured it was time for
> another round of testing. Specifically, some people, including Alan,
> mentioned the stability of the Highpoint drivers. Since I've had dismal luck
> with my HPT366 in the past, I was excited at the prospect of being able to
> use it without trashing my disks (again).
>
> No such luck, I'm afraid. While my disks have survived seemingly unharmed,
> the system [1] barfed on speed tests.
>
> I booted into multi-user (no X), but dhcpd hadn't started properly. After
> some investigation, I found it to be core-dumping as a result of a corrupted
> binary. Re-installing the RPM got it back up in a jiffy. While this could
> have been an unrelated anomaly, my suspicions were on the Highpoint driver.
>
> Next, I set the drive for 32-bit IO...
>
> hdparm -c1 /dev/hde
>
> ... then switched to X (exec init 5).
>
> The first real test, now, was to speed-test the drive:
>
> hdparm -tT /dev/hde
>
> This yielded practically no improvement over the PIIX4 (both averaged
> ~25 MiB/s). Of course the usual routine is to run the test 3 or 4 times and
> take an average. Well, lo and behold, the 2nd run of the speed test went as
> follows:
>
> /dev/hda:
> Timing buffer-cache reads: 128 MB in ~1.4 seconds = ~90 MB/s
> Timing buffered disk reads:
>
> ... and nothing! The hdparm process went into D state, and everything else
> that tried to access the drive also locked.
>
> I rebooted, into single-user mode this time, and tried the speed test again
> (after enabling 32-bit IO). This time it locked on the first test in the
> same way as above. At this point I gave up and returned the drive to the
> PIIX4 and prayed it was not completely fubared.
>
> So, any ideas? Is you patch really supposed to work well on the HPT366, or
> am I dreaming in Technicolour? Interestingly, most everything on the system
> seemed to work OK. File access, loading apps, etc all seemed OK, but the
> lockup during speed test really worries me.
>
>
> [1] Abit BP6, 2x 400MHz Celeron, 384MB RAM
> HPT 366 w/ Quantum Fireball LM30 (PM by CS)
> PIIX4 w/ WDC AC33100H (SM), Mitsumi FX4820T (SS)
> Linux 2.4.17 w/ ide.2.4.16.12102001 & freeswan-1.91
> hdparm v4.4
>
> Regards,
> Ian Morgan
> --
> -------------------------------------------------------------------
> Ian E. Morgan Vice President & C.O.O. Webcon, Inc.
> imorgan@webcon.net PGP: #2DA40D07 www.webcon.net
> -------------------------------------------------------------------
>
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