I tried hdparm -d1 -X66 /dev/hdX and I got a significant reduction in
performance:
Maxtor: 28mb/sec to 15 mb/sec
WD: 22mb/sec to 20 mb/sec
So, I guess I will just leave the dma setting off (???).
>From: Eugenio Diaz <[EMAIL PROTECTED]>
>Reply-To: [EMAIL PROTECTED]
>To: [EMAIL PROTECTED]
>Subject: Re: [Cooker] U66 solved
>Date: Sun, 18 Jun 2000 22:47:53 -0700 (PDT)
>MIME-Version: 1.0
>Received: from [216.71.84.35] by hotmail.com (3.2) with ESMTP id
>MHotMailBB16FF6F0062D820F3C8D84754234A0B0; Sun Jun 18 22:49:35 2000
>Received: (from sympa@localhost)by mandrakesoft.mandrakesoft.com
>(8.8.5/8.8.5) id AAA00834for [EMAIL PROTECTED]; Mon, 19 Jun 2000
>00:48:51 -0500
>Received: from web121.yahoomail.com (web121.yahoomail.com
>[205.180.60.129]) by mandrakesoft.mandrakesoft.com (8.8.5/8.8.5) with SMTP
> id AAA00302 for <[EMAIL PROTECTED]>; Mon, 19 Jun 2000 00:47:13
> -0500
>Received: (qmail 14189 invoked by uid 60001); 19 Jun 2000 05:47:53 -0000
>Received: from [207.36.26.197] by web121.yahoomail.com; Sun, 18 Jun 2000
>22:47:53 PDT
>From [EMAIL PROTECTED] Sun Jun 18 22:51:13 2000
>Message-Id: <[EMAIL PROTECTED]>
>X-Loop: [EMAIL PROTECTED]
>X-Sequence: 1232
>Precedence: list
>
>
>--- bobby dowling <[EMAIL PROTECTED]> wrote:
> > What do you mean the -d flag without the -X flags?
> >
> > So, you can say -dX and those WD drives that froze
> > the system before would
> > work?
>
>Nooo! For UltraDMA2 on your fisrst ide drive, it would
>be something like this (for an explanation of the
>number after the -X, see the man page of hdparm):
>
>hdparm -d1 -X66 /dev/hda
>
>or for an older EIDE drive:
>
>hdparm -d1 -X34 /dev/hda
>
>**Please note this is dangerous stuff; if you punch in
>a mode that does not corresponds to what your
>drive/controller is capable, under some circumstances
>it could lead to a corrupted file systems.
>
>=====
>________________________
>Eugenio Diaz, BSEE/BSCE
>Linux Engineer
>[EMAIL PROTECTED]
>
>__________________________________________________
>Do You Yahoo!?
>Send instant messages with Yahoo! Messenger.
>http://im.yahoo.com/
>
________________________________________________________________________
Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com
