Linux-Hardware Digest #948, Volume #12 Mon, 29 May 00 09:13:08 EDT
Contents:
DVD spams media change error? (Anthony Phillips)
corel linux (dan)
Re: Newbie: Sound Blaster 16 {no sound} ("The Chief")
Scsi adaptec 1505AE ("The Chief")
Re: Red Hat 6.2, Highpoint HPT366: installs fine, won't boot stopping at 'LI' (_)
parallel cdrom (Ludovic BORG)
Re: Red Hat 6.2, Highpoint HPT366: installs fine, won't boot (Guus Zijlstra)
Re: Problems mounting CD-rom with Audio CD (Diethard Ohrt)
Re: mouse w/ a scroll button ([EMAIL PROTECTED])
Re: 10/100 network card. (Richard Steiner)
Re: Is HP Deskjet supported? (Buchan Milne)
Re: Newbie -- LS120 (Steven Owens)
ZIP Drive - strange problems (Carlos Henriques dos Santos)
Re: ZIP Drive - strange problems (Carlos Henriques dos Santos)
Re: Writing driver to read MOD. (Bart Lagerweij)
fatal memory error on shutdown (Neil Blue)
Re: Fun with Brain Dead Printers. (Graham Murray)
Re: Printer driver SAMSUNG ML-5000A (Stefan Illy)
Re: Scsi adaptec 1505AE (FEJF)
MS-6167 K7 motherboard: any good? (Andres Suarez)
Matrox G400 and SVGATextMode ([EMAIL PROTECTED])
Newbie - Display problems ("stefluke")
Re: Scsi adaptec 1505AE ("Gene Heskett")
Re: mouse w/ a scroll button ("Andrew P. Billyard")
Re: Maxtor 40 Plus & Linux (Bernd Melchers)
Linux K7V UDMA setup & experiences ([EMAIL PROTECTED])
----------------------------------------------------------------------------
From: Anthony Phillips <###[EMAIL PROTECTED]>
Crossposted-To: comp.os.linux.setup
Subject: DVD spams media change error?
Date: Mon, 29 May 2000 14:24:20 +0800
I have a problem with my Pioneer 10x DVD-ROM. Im
running RedHat 6.2 and although the drive is detected
with no problems and can be used hassle free, I have
a message being spammed into my dmesg log over and
over, non-stop. The message talks about a media change
being detected on ide1, and it gives a major and minor
number which corresponds to the DVD drive. Does
anybody know how to prevent this? It doesnt seem to
be a real problem, but it eats up disk space like there
is no tomorrow. Is this a fixable problem or is it just
due to the drive not being 100% supported or something
like that?
Any help greatly appreciated.
Cheers.
------------------------------
From: dan <[EMAIL PROTECTED]>
Subject: corel linux
Date: Mon, 29 May 2000 06:30:03 GMT
i have a 4gig ide hard drive it is the boot drive with corel linux
on it and i just installed a scsi hard drive how do i set it up
do i fdisk it or ????? and how do i know if the os see it
thanks
dan
im new with linux
--
Posted via CNET Help.com
http://www.help.com/
------------------------------
From: "The Chief" <[EMAIL PROTECTED]>
Subject: Re: Newbie: Sound Blaster 16 {no sound}
Date: Sun, 28 May 2000 23:00:08 -0700
"The Chief" <[EMAIL PROTECTED]> wrote in message
news:X_RX4.76523$[EMAIL PROTECTED]...
> I have the Mandrake 7.0 Linux package! I can't get it play any sound looks
> like a IRQ Conflict How do I Fix!
> I have a Riva tnt2 video card I can't get it Config! Does Linux support
it?
> My Printer hp 882c only prints in b&w
> I supposes thats why!
>
> Please Help Thanx
>
>
> My Sys: amd k6/2 500mmx
>
>
> Thanx to all, for comments I changed my Bios I get sound now! I guess
video card works fine plenty of colors anyway! there just wasn't any info in
Linux under video!
I wish Mandrake Linux supported my scsi adapter Adaptec 1505AE Bye To All!
I change my Printer to the 660c it works just finwe now1
>
------------------------------
From: "The Chief" <[EMAIL PROTECTED]>
Subject: Scsi adaptec 1505AE
Date: Sun, 28 May 2000 23:03:52 -0700
I have the mandrake 7.0 do they have drivers for my scsi card! I hope they
support it!
Bye
------------------------------
From: _ <>
Subject: Re: Red Hat 6.2, Highpoint HPT366: installs fine, won't boot stopping at 'LI'
Date: Mon, 29 May 2000 02:48:24 -0400
Yeah, that thought had crossed my mind too. Linear,
non-linear, setting the CHS values manually... same
result... 'LI'!
It's as if LILO can't see the highpoint drives at all.
Thanks..!
On 29 May 2000 03:30:05 GMT, Chuan-kai Lin
<[EMAIL PROTECTED]> wrote:
>Try the "linear" option in your lilo.conf.
>
>-- Chuan-kai Lin
------------------------------
From: Ludovic BORG <[EMAIL PROTECTED]>
Subject: parallel cdrom
Date: Mon, 29 May 2000 09:39:31 +0200
Hi,
i've bought a // - IDE adapter to install linux on a laptop.
The external box Seems to be an OnSpec(s) one.
I've tried to install both suse and red-hat, even with
the special disks for // driver (i.e. paride ) found on
torque network, and that's what append :
- driver test a lot of drivers and stops on onspec26
- loads ppd and stop because a "busy device"
anyone can help me ?
Really thanks.
--
Ludovic BORG
email: [EMAIL PROTECTED]
WWW : http://www.cicrp.jussieu.fr
http://www.cicrp.jussieu.fr/borg
------------------------------
From: Guus Zijlstra <[EMAIL PROTECTED]>
Subject: Re: Red Hat 6.2, Highpoint HPT366: installs fine, won't boot
Date: Mon, 29 May 2000 09:39:24 +0200
Reply-To: remove_nospam_bogus_from_sender
_ wrote:
>
> Thanks for the suggestion.
>
> I've tried booting with the boot disk that is created during
> installation. Is that the one you are referring to? When I
The boot disk I am talking about is an ms-dos formatted,
bootable floppy with a few files. Here is a listing of mine:
LDLINUX SYS 5488 12-17-1998 9:36
SYSLINUX CFG 80 01-03-2000 1:04
LINUX 486431 05-22-2000 16:33
message txt 157 05-22-2000 21:28 message.txt
The configuration file SYSLINUX.CFG contains
parameters, such as the following:
DISPLAY message.txt
TIMEOUT 100
PROMPT 1
DEFAULT linux
APPEND root=/dev/hda1 ro
Guus.
------------------------------
From: Diethard Ohrt <[EMAIL PROTECTED]>
Subject: Re: Problems mounting CD-rom with Audio CD
Date: Mon, 29 May 2000 09:50:05 +0200
"K. Xu" wrote:
>
> Hi,
> I was trying to mount CD-rom containing an audio cd, but got error
> message "Wrong medium type".
As others already posted, there is no filesystem on an audio CD. But you
can use the "CD filesystem" to mount it:
http://www.elis.rug.ac.be/~ronsse/cdfs/
--
[EMAIL PROTECTED]
SIEMENS AG/PSE EZE CN1, A-8054 Graz, Austria
Tel.: (+43) (0)51707-63709
Fax: (+43) (0)51707-58692
------------------------------
From: [EMAIL PROTECTED]
Subject: Re: mouse w/ a scroll button
Date: Mon, 29 May 2000 07:59:46 GMT
Tried
http://www.inria.fr/koala/colas/mouse-wheel-scroll/
?
-Raphy
In article <SfaY4.1066$[EMAIL PROTECTED]>,
"Simon Huang" <[EMAIL PROTECTED]> wrote:
> hi, i have one of those mouses w/ a scroll button and i am using
redhat 6.2.
> i've configure my mouse so that the scroll button works in file
manager,
> etc. but i don't know how to make it work in netscape. thank you very
much
>
>
Sent via Deja.com http://www.deja.com/
Before you buy.
------------------------------
From: [EMAIL PROTECTED] (Richard Steiner)
Subject: Re: 10/100 network card.
Reply-To: [EMAIL PROTECTED]
Date: Mon, 29 May 2000 03:04:15 -0500
Here in comp.os.linux.hardware, "Will" <[EMAIL PROTECTED]>
spake unto us, saying:
>I'm looking for a 10/100 network that Linix will see with out having to
>install any manufacture specific drivers.
Which distribution are you using? Different distributions can come
with different levels of hardware support compiled into the kernel by
default.
I've had very good luck with recent versions of Red Hat, Mandrake, and
SuSE using Intel EtherExpress Pro/100B NICs, and also 3Com 3C905B-TX
NICs (both PCI).
--
-Rich Steiner >>>---> [EMAIL PROTECTED] >>>---> Bloomington, MN
OS/2 + BeOS + Linux + Solaris + Win95 + WinNT4 + FreeBSD + DOS
+ VMWare + Fusion + vMac + Executor = PC Hobbyist Heaven! :-)
"Monopoly? No, we just don't want competition" --Intel
------------------------------
From: Buchan Milne <[EMAIL PROTECTED]>
Subject: Re: Is HP Deskjet supported?
Date: Mon, 29 May 2000 10:17:13 +0200
This can be caused by the lpr daemon not running. Sorry, don't know hot
to fix it, but it does work ....
Buchan
Shao Jun Ping wrote:
>
> Hi,
>
> I using the Mandrake 7.0 distro on a Acer Travelmate 340T. When I use
> printtool
> to set up my old Deskjet 500, nothing happens under ASCII test print and
> Postscript test
> print. If I print directly to the port however, it works perfectly. What
> is the problem here?
>
> Regards,
> -JP
------------------------------
From: Steven Owens <[EMAIL PROTECTED]>
Subject: Re: Newbie -- LS120
Date: Mon, 29 May 2000 09:46:53 +0200
Reply-To: [EMAIL PROTECTED]
Thanks for the insight. I agree with your conclusion and recommendation,
however I am not anxious to tear into a company laptop to try it. Think
I'll look for a BIOS upgrade first.
Steve
Giulio Orsero wrote:
> In article <[EMAIL PROTECTED]>,
> [EMAIL PROTECTED] wrote:
> > Gentlemen,
> >
> > What do you suggest when the boot probe does NOT recognize the LS-120
> as such?
> >
> > /var/log/dmesg reveals:
> > ide1: BM-DMA at 0xfc98 - 0xfc9f, BIOS settings hdc: pio, hdd: pio
> > hdc: , ATAPI Unknown (type 31) drive
> > hdd: CD-224E, ATAPI CDROM drive
> > ide1: at 0x170-0x177, 0x376 on irq 15
> > floppydrive: fd0 is 1.44M
> > fdc0 is a National Semiconductor PC87306
> >
>
> It seems linux has problems with certain bioses.
> In those cases you need to put the ls120 on the same ide channel as an
> IDE DISK to have it recognized.
>
> This
> >hdc: �, ATAPI UNKNOWN (type 31) drive
> shows that linux does not recognize it.
>
> Try installing it as hdb, and you'll probably see someting like:
> hdb: LS-120 VER5 00 UHD Floppy, ATAPI FLOPPY drive
>
> Then you'll be able to use it.
>
> --
> [EMAIL PROTECTED]
>
> Sent via Deja.com http://www.deja.com/
> Before you buy.
------------------------------
From: Carlos Henriques dos Santos <[EMAIL PROTECTED]>
Subject: ZIP Drive - strange problems
Date: Mon, 29 May 2000 10:49:32 +0200
Reply-To: [EMAIL PROTECTED]
Hello,
I have 15 PCs with SuSE 6.3 Kernel 2.2.13, all with an internal IDE
ZIP drive. The PCs are used by students.
I included the "IDE/Atapi FLOPPY support" to the kernel.
In the fstab i included this rows:
/dev/hdb4 /mnt/dos_zip vfat noauto,user 0 0
/dev/hdb1 /mnt/dos_zip_1 vfat noauto,user 0 0
The last row is for ZIPs that have their partition on #1 (normally the
partition is on #4).
When i sometimes mount a ZIP-Media. ls shows files that definitely dont
exist on the medium and some files that are on the medium are not
shown. The non existent files are from ZIPs of other people. Sometimes
also mount /mnt/dos_zip needs some minutes. When i reboot such a System
everything works fine.
On my personal PC i am using IDE ZIPs since 2 years and never had a
problem.
Has someone noticed similar problems?
What could cause this problem?
Thanks in advance,
Carlos dos Santos
------------------------------
From: Carlos Henriques dos Santos <[EMAIL PROTECTED]>
Subject: Re: ZIP Drive - strange problems
Date: Mon, 29 May 2000 10:55:38 +0200
Reply-To: [EMAIL PROTECTED]
On Mon, 29 May 2000, Carlos Henriques dos Santos wrote:
> Hello,
>
> I have 15 PCs with SuSE 6.3 Kernel 2.2.13, all with an internal IDE
> ZIP drive. The PCs are used by students.
> I included the "IDE/Atapi FLOPPY support" to the kernel.
> In the fstab i included this rows:
> /dev/hdb4 /mnt/dos_zip vfat noauto,user 0 0
> /dev/hdb1 /mnt/dos_zip_1 vfat noauto,user 0 0
>
> The last row is for ZIPs that have their partition on #1 (normally the
> partition is on #4).
>
> When i sometimes mount a ZIP-Media. ls shows files that definitely dont
> exist on the medium and some files that are on the medium are not
> shown. The non existent files are from ZIPs of other people. Sometimes
> also mount /mnt/dos_zip needs some minutes.
this was wrong not the mount needs some minutes, but the first ls.
> When i reboot such a System
> everything works fine.
>
> On my personal PC i am using IDE ZIPs since 2 years and never had a
> problem.
>
> Has someone noticed similar problems?
> What could cause this problem?
>
> Thanks in advance,
>
> Carlos dos Santos
>
>
>
------------------------------
From: bart@[NoSpam]cts-bv.nl (Bart Lagerweij)
Crossposted-To: comp.periphs.scsi
Subject: Re: Writing driver to read MOD.
Date: 29 May 2000 09:08:12 GMT
I would go for "lhd administrator"s option.
You can use something like "dd if=/dev/xxx of=/tmp/mod_dump.bin"
--
Bart Lagerweij - Computer Technology Systems - http://www.cts-bv.nl
(Please don't email me, reply to the newsgroup)
------------------------------
Subject: fatal memory error on shutdown
From: Neil Blue <[EMAIL PROTECTED]>
Date: Mon, 29 May 2000 03:17:45 -0700
Hello,
I am using Mandrake 7.0-2 on a K6-2 500 machine with 128 Meg Ram,
and a gigabyte GA5AX main board.
I am a bit of a linux newbie but I have run linux on my previous
PC's with no problem. Now I am finding that when the system
halts, just after the Power Down message, there is a memory
error. I am not sure where this is recorded in the logs, and
there was a lot of dump information.
Please could anyone tell me where/if I can get a copy of this
error on a log somewhere. And how to go about solving this.
Thank You
Neil Blue
* Sent from RemarQ http://www.remarq.com The Internet's Discussion Network *
The fastest and easiest way to search and participate in Usenet - Free!
------------------------------
From: Graham Murray <[EMAIL PROTECTED]>
Crossposted-To: comp.os.linux.advocacy
Subject: Re: Fun with Brain Dead Printers.
Date: 29 May 2000 10:32:56 +0000
In comp.os.linux.hardware, [EMAIL PROTECTED] writes:
> No that is hat you are doing implying, by omission, your usual method,
> that a person can easily set up a printer under Linux but can't answer
> "ok" 4 times to do it under Windows.
Setting up a printer in Windows is not always that easy. A couple of
months ago we had a new network (ethernet) printer delivered at
work. Within 2 minutes of the printer going online I had printed a
test-print from my Linux workstation. It took about 10 minutes before
it was accessible from the NT workstations, but the workstations
running Windows 98 could not use it for another day. The reason - the
person installing the printer on the NT server just accepted the
defaults and this created a share name which contained a space. NT was
quite happy with this, but 98 would not grok it.
------------------------------
From: Stefan Illy <[EMAIL PROTECTED]>
Subject: Re: Printer driver SAMSUNG ML-5000A
Date: 29 May 2000 13:37:48 +0200
Erik Leunissen <[EMAIL PROTECTED]> writes:
Dear Erik,
> Can anybody help me finding a printer driver for the SAMSUNG ML 5000G
> laser printer? Because this brand laser printer is not in the list of
> available drivers in the Suse insatallation, I tried some of the
> HP-drivers (not really knowing what I was doing, and a bit desperate),
> but it didn't work out.
I bought the ML-5000A (not 5000G!) one week ago and installed it as a HP
LaserJet 4 (ljet4 driver of ghostscript). Works perfectly, both quality
and speed are very good.
I don't know if there is a difference between the 5000A and 5000G.
See also http://www.picante.com/~gtaylor/pht/printer_list.cgi,
a `5050G' model is mentioned there.
Best wishes,
Stefan
------------------------------
From: FEJF <[EMAIL PROTECTED]>
Subject: Re: Scsi adaptec 1505AE
Date: Mon, 29 May 2000 13:00:43 +0200
The Chief
wrote in <1hoY4.4200$[EMAIL PROTECTED]>
> I have the mandrake 7.0 do they have drivers for my scsi card! I hope they
> support it!
> Bye
there should be a module named
aha152x
this should work. BUT: if u don't use the default settings u MUST append
the following (appropriate) parameters:
aha152x=<port in hex>,<irq>,<scsi-controller id number - should be 7>
for example:
aha152x=0x340,9,7
fejf
------------------------------
From: Andres Suarez <[EMAIL PROTECTED]>
Subject: MS-6167 K7 motherboard: any good?
Date: Mon, 29 May 2000 11:49:57 +0200
Hi!
I am thinking about buying a new K7 machine.
I have checked http://www.linhardware.com but it isn't clear to me if
this motherboard (MS-6167 K7) will work well with Linux, so I would like
to hear from anyone that has tried it.
Bye!
--
Andres Suarez
------------------------------
From: [EMAIL PROTECTED]
Subject: Matrox G400 and SVGATextMode
Date: Mon, 29 May 2000 11:46:06 GMT
Has anyone gotten SVGATextMode to work with the Matrox G400 AGP?
--
Phil Howard
[EMAIL PROTECTED]
------------------------------
From: "stefluke" <@bigpond.com>
Subject: Newbie - Display problems
Date: Mon, 29 May 2000 22:16:03 +1000
I have looked all over for the answer to this, I hope I'm not missing
something obvious.
I have installed a Mandrake package (6.1) which uses I am told on the box,
Red Hat 6.0. Fine so far.
I am trying to convince a Trident 3d Image 9750 AGP card (4 meg) to display
on a KTX Topscan 15" monitor. I have tried Xconfigurator and xf86config in
about 5 million different ways.
I wrote down all of the options using the rpm -i pciutils-2.1-2mdk.1586rpm
command I found on the Mandrakeuser troubleshooting site, and all of the
options for the KTX 15" entry in the Monitors file.
According to the files, I am looking for a horizontal sync of 30-60 and
vertical refresh of 40-110.
There are a number of modes in the monitor file, and i have tried most of
them, and stayed just under the limits. i have picked mostly conservative
defaults to try and see something. Xconfigurator will mostly tell me there
is a problem with the configuration and allow me to go back or quit.
xf86config will save the values and let me startx. (I think I am using KDE,
but it is hard to tell because (1) I can't see much and (2) i haven't been
able to find much out about Linux because (1) I can't see much etc..)
Anyway, the best I can do so far is get a VERY slow foreground sort of
image, with no background, except for a rather alarming line across the top
of the screen. I can sort of interact with icons on the screen but slowly,
and they don't appear correctly, overwriting other things on the screen and
always with no background. Cycling through the modes will give me a few
similar to that, and some that look like the v-hold is wrong, with a crushed
image in the middle of the screen, again, no colour background.
Once I did manage a normal image, but the mouse was locked up and the full
screen of my monitor only showed about 1/8 of the desktop.
Can someone please help with this. I am not even sure if I need to start
higher or lower in terms of config options - some guidance would at least
allow me to cut down on the variables.
Thanks in advance to anyone who can help.
Stef Luke
------------------------------
Date: 29 May 2000 7:43:8 -0500
From: "Gene Heskett" <[EMAIL PROTECTED]>
Subject: Re: Scsi adaptec 1505AE
Unrot13 this;
Reply to: <[EMAIL PROTECTED]>
Gene Heskett sends Greetings to The Chief;
TC> I have the mandrake 7.0 do they have drivers for my scsi card! I
TC> hope they support it! Bye
Many of the smaller, non-bootable scsi cards by adaptec are supported by
the aha1520 driver, but you have to supply the irq and i/o port numbers
to them in /etc/conf.modules, or (as I've heard, not done) options in
/etc/lilo.conf and re-running lilo. I ran an aha1502 that way for a
while, but needed an external connector for a tape drive so it was
pulled for an advansys.
Cheers, Gene
--
Gene Heskett, CET, UHK |Amiga A2k Zeus040, Linux @ 400mhz
Ch. Eng. @ WDTV-5 |This Space for rent
RC5-Moo! 350kkeys/sec, Seti@home 16 hrs a block
email gene underscore heskett at iolinc dot net
This messages reply content, but not any previously quoted material, is
� 2000 by Gene Heskett, all rights reserved.
--
------------------------------
From: "Andrew P. Billyard" <[EMAIL PROTECTED]>
Subject: Re: mouse w/ a scroll button
Date: Mon, 29 May 2000 12:37:56 GMT
Also, you can run imwheel in the background....
http://jcatki.dhs.org/imwheel/
[EMAIL PROTECTED] wrote:
> Tried
> http://www.inria.fr/koala/colas/mouse-wheel-scroll/
> ?
>
> -Raphy
>
> In article <SfaY4.1066$[EMAIL PROTECTED]>,
> "Simon Huang" <[EMAIL PROTECTED]> wrote:
> > hi, i have one of those mouses w/ a scroll button and i am using
> redhat 6.2.
> > i've configure my mouse so that the scroll button works in file
> manager,
> > etc. but i don't know how to make it work in netscape. thank you very
> much
> >
> >
>
> Sent via Deja.com http://www.deja.com/
> Before you buy.
------------------------------
From: [EMAIL PROTECTED] (Bernd Melchers)
Crossposted-To: comp.sys.ibm.pc.hardware.storage
Subject: Re: Maxtor 40 Plus & Linux
Date: 29 May 2000 12:42:53 GMT
Steve Miles <[EMAIL PROTECTED]> writes:
>I have a Dell Pentium Pro 200 and just bought the Maxtor 40GB. Haven't had
>any luck seeing more than ~8GB so far, primarily because Dell won't
>provide an updated BIOS that recognizes HDs > 8.4GB. As I understand it,
>if you can get an updated BIOS for your MB and get kernel 2.2.15, you
>should be okay.
you can access large disks (>32 GB) with an old bios!
you have to disable the disk in the bios and to give linux
some command line parameters. It is then not possible to use this
disk for M$-Windows or booting linux. read the howtos!
Ciao
Bernd
------------------------------
From: [EMAIL PROTECTED]
Crossposted-To: comp.os.linux.setup
Subject: Linux K7V UDMA setup & experiences
Date: Mon, 29 May 2000 12:40:57 GMT
This is a note of my own experience of UDMA (or not :-) and which may
help someone. Firstly I installed SuSE 6.4 on a K7V,650Mhz,256MB and
with a couple of IBM DTLA-307015 drives, and suspected that something
was up when bonnie(1) was giving only a few MB throughput at best, and
hdparm -Tt essentially reporting the same. The 'dmesg' log also looked
suspect, and typical values for hdparm looked like:
/dev/hdb:
Timing buffer-cache reads: 128 MB in 0.86 seconds =148.84 MB/sec
Timing buffered disk reads: 64 MB in 17.88 seconds = 3.58 MB/sec
Not too impressive :-)
After scouring the posts and reading the Howto, 'hdparm /dev/hdb' did
indeed show that DMA was disabled. Turning on dma with 'hdparm -d1' gave
a marked improvement (as you'ld expect!) as below:
/dev/hdb:
Timing buffer-cache reads: 128 MB in 0.82 seconds =156.10 MB/sec
Timing buffered disk reads: 64 MB in 1.81 seconds = 35.36 MB/sec
bonnie gives similar results:
bonnie -s 500 -y
File './Bonnie.469', size: 524288000, volumes: 1
Writing with putc()... done: 8580 kB/s 96.3 %CPU
Rewriting... done: 14095 kB/s 18.9 %CPU
Writing intelligently...done: 30252 kB/s 21.9 %CPU
Reading with getc()... done: 9439 kB/s 99.4 %CPU
Reading intelligently...done: 35673 kB/s 16.6 %CPU
The interesting thing was that I then fell into 'the trap' of enabling
UDMA66 with 'hdparm -X66', and got a dramatic *decrease* in performance,
e.g.:
/dev/hdb:
Timing buffer-cache reads: 128 MB in 0.87 seconds =147.13 MB/sec
Timing buffered disk reads: 64 MB in 2.68 seconds = 23.88 MB/sec
(vs. 35.36MB/sec using only -d1)
As the hdparm manual states, enabling dma usually picks the best mode,
and -X66 doesn't just mean use UDMA66, but use UDMA66 *in mode 2*, and
this isn't the best mode, with mode 4 or mode 5 (-X68 or -X69) working
better with these drives.
So the final solution was just to add:
hdparm -d1 /dev/hda
hdparm -d1 /dev/hdb
to the /etc/rc.d/boot.local file
But, having said this, I am wondering whether I should expect a
sustained rate higher than 36MB/sec given that the burst rate is
66MB/sec.
Finally, doing a perhaps more real world example of repeated
time ( cd /usr ; tar cf - doc ) | tar xf -
time diff -r /usr/doc doc
time rm -rf doc
sequences, (and to check data integrity), gives times around 42 seconds
for the tar and the diff (/usr/doc is 200Mb on my system), and so a rate
nearer 10MB/sec, although presumably a little better since the directory
tree of around 450 directories needs to be read and recreated etc.
Nick
Sent via Deja.com http://www.deja.com/
Before you buy.
------------------------------
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End of Linux-Hardware Digest
******************************
