Linux-Hardware Digest #146, Volume #11 Tue, 31 Aug 99 11:14:00 EDT
Contents:
Re: Asus V-3800 AGP Ultra Deluxe (Fabien Pelisson)
Optimal Linux RAID Support? Questions. ([EMAIL PROTECTED])
Re: Maxtor Dimond Max Corrupt problem (Laurie Robert Young)
Re: can I tell a winmodem by looking at it? (M. Buchenrieder)
US Robotics 56K External Voice Faxmodem small problem (Carl Peto)
Re: PCI Modem Problems (M. Buchenrieder)
Re: setserial help (M. Buchenrieder)
Re: DATA DDS-2 ("Marout Yasuo Borms")
Re: Difficulties with SCSI disk drive. (Zero Partition) ("Marout Yasuo Borms")
Problems with setting up a EZ2000(NE2000 compatiable ) network card on Linux ("Tony")
Re: WinModems (Lew Pitcher)
Re: Please recommend a SILENT 10/100 Ethernet hub (Jason C. Cotton)
Re: panasonic cd writer cw-7582-B (nev okyay)
Re: zip scsi interface real scsi? (Les Schaffer)
Re: DATA DDS-2 ("Gene Heskett")
Re: Does Zoltrix Modem FM-VSP65i3 work under linux? (Rob Clark)
Re: Dell 6300 PERC 2/SC performance (Christian Schulz)
Re: Dual Pentium II shows as Dual Celeron... (Artur Swietanowski)
serial modem problems (Curtis)
----------------------------------------------------------------------------
From: Fabien Pelisson <[EMAIL PROTECTED]>
Crossposted-To: comp.os.linux.setup,redhat.config
Subject: Re: Asus V-3800 AGP Ultra Deluxe
Date: Tue, 31 Aug 1999 12:24:26 +0200
Denny wrote:
> Hello Guys!
> I have a problem with my ASUS V-3800 video card. I can't configure it out.
> My screen is so big...,when i use Gnome(xwindows)... ;-(
> I tried already everything: Xconfigurator(sux),XF86Config,XF86Setup..
> It won't work.
> My monitor is Sony CPD-200sx, 17".
> Maybe somebody have a special driver for it or could send me step by step
> instractions how to configure it out.
> Thank for any help.
> Sincerely yours, Denny
>
> ------------------ Posted via CNET Linux Help ------------------
> http://www.searchlinux.com
go to http://glide.xxedgexx.com/3DfxRPMS_vb_glibc.html
------------------------------
From: [EMAIL PROTECTED]
Crossposted-To: comp.os.linux,comp.os.linux.setup,comp.os.linux.misc
Subject: Optimal Linux RAID Support? Questions.
Date: Tue, 31 Aug 1999 10:46:55 GMT
Hello, I am in the process of configuring and setting up some Linux
servers for my company, two of which will have their own RAID (~50gb and
~250gb respectively). I have been using only SCSI devices for years but
the new EIDE (e.g., Ultra ATA/66) drives/cards look acceptable and given
its drastic cost difference, it seems like a very attractive option for
RAID structures. SCSI is out of the question due to cost, so I will be
using Ultra ATA/66 drives.
The two servers that I will be putting a RAID into have two different
uses, the 50gb one is used for the main fileserver and thus needs
redundancy (RAID 5), the 250gb one will only be used as a temporary
storage RAID and redundancy is not important (RAID 0), except maybe to
keep the RAID functional if a drive goes down, but no backups will be
kept and data being lost is not a concern so getting more space out if
this RAID is more important.
The question is this... software or hardware based RAID? And what
are the hardware requirements?
Hardware - I have heard that the FastTrak66 card is good, however it
has a 4 drive limitation (and im not sure of the throughput of 4
drives would be any higher than 2), so I cant use it for the large RAID
(at least not as a stand alone device), and apparently has no support
for RAID 5 which is what i'd like to use for at least the main file
server. Is this the only option for an EIDE hardware based RAID
controller?
Software: I am not sure how much the EIDE bus issues have changed, I
know the drive being used still needs to take control of the bus, but
are the latency issues in switching between two drives on the same bus
as bad as it used to be? Would getting multiple EIDE cards/busses, one
for each drive so it has its own dedicated bus, create a significant
performance boost with software RAID? For example, I could get 4
dual-EIDE bus cards and have a total of 8 disks. How about the
Linux EIDE controller drivers what kind of load will that create? Which
chipset is best? What kind of system will I need to be able to manage
this RAID and the 100base network mounts using it? I dont plan on using
the fileservers for anything other than the RAID, servicing the network
mounts and backup (only on the main server).
I dont have the money to just buy all the drives I need and various
cards and benchmarking the various configurations (and have not yet
found anyone or site that has), also what drives I get depends on the
card/configuration.
Ultimately i'd like to get the most throughput as possible while
keeping the cost down. However I am unclear on the performance details
regarding EIDE and Linux RAID. If anyone could help out that would be
greatly appreciated!
Thanks!
Introvert
[EMAIL PROTECTED]
Sent via Deja.com http://www.deja.com/
Share what you know. Learn what you don't.
------------------------------
From: [EMAIL PROTECTED] (Laurie Robert Young)
Subject: Re: Maxtor Dimond Max Corrupt problem
Date: Tue, 31 Aug 1999 10:41:34 GMT
On Sun, 29 Aug 1999 20:13:42 +0200, Henrik Carlqvist
<[EMAIL PROTECTED]> wrote:
>Laurie Robert Young wrote:
>> When I install Red Hat linux on it I find that after a week or so of
>> use I will switch the system on one day and I get the message
>> /dev/hda3 containts file system with error - check forced
>
>Maybe this is a stupid question, but how did you shutdown the system?
>Just turning the power off will cause this kind of problems as unwritten
>cached data will be lost.
>
No I shutdown proerly with the "halt" command (an alias of "shutdown
-h now"
I think the problem might have seomthing to do with a probelme I had
with winows installation - I am going to post a new message with a
rephrased question so take a look at that and see if you have any
ideas please
Thanks
Laurie
------------------------------
From: [EMAIL PROTECTED] (M. Buchenrieder)
Subject: Re: can I tell a winmodem by looking at it?
Date: Tue, 31 Aug 1999 07:30:51 GMT
[EMAIL PROTECTED] (Ron Gibson) writes:
>On Mon, 30 Aug 1999 06:32:01, [EMAIL PROTECTED] (M. Buchenrieder) wrote:
>> >For PCI. If it's an ISA card, is is definitely _NOT_ a winmodem.
>>
>> Nonsense. Most internal ISA modems presently available are winmodems.
>> What you do have to check is the modem description. If the box mentions
>> "HSP", "HCF" or "requires Win*", then it's definitely a Winmodem.
>> If it doesn't, let the vendor confirm that this modem will work in
>> native DOS .
>That's not quite true either.
Right. Some boxes say "Requires Win*" just for the enclosed add-on
software products.
>Only an hour ago I looked at a 3Com
>Sportster Model 5687 and on the outside of the shrink wrapped box it said
>"Requires Windows 95 or 98" and it was an ISA jumpered modem.
[...]
This is a real modem . The 5687 is a standard 56K V.90/X2 internal
ISA modem. When in doubt, check the manufacturer's webpage prior to shelling
out your bucks :)
Michael
--
Michael Buchenrieder * [EMAIL PROTECTED] * http://www.muc.de/~mibu
Lumber Cartel Unit #456 (TINLC) & Official Netscum
Note: If you want me to send you email, don't munge your address.
------------------------------
From: Carl Peto <[EMAIL PROTECTED]>
Subject: US Robotics 56K External Voice Faxmodem small problem
Date: Tue, 31 Aug 1999 11:50:30 +0000
(Kernel 2.0.27, Slackware Linux)
Works fine except that when I first turn my machine on if I try to
connect to my ISP the maximum speed it negotiates is 9600!
If I go into minicom first and then quit immediately then I get the high
speeds; 44000, etc.
Any time I try again after that (until I reboot) I get high speeds.
If I turn off the power to the modem and on again it still connects at
high speed so I think it must be a COM2 port setting but my
/etc/rc.d/rc.serial script runs sersetup correctly for that port as far
as I can see. What setting is minicom adjusting and how do I do it im
my startup scripts??
Thanks,
Carl
------------------------------
From: [EMAIL PROTECTED] (M. Buchenrieder)
Subject: Re: PCI Modem Problems
Date: Tue, 31 Aug 1999 07:32:53 GMT
[EMAIL PROTECTED] (Sethuraman Baranidharan) writes:
>>From: [EMAIL PROTECTED] (M. Buchenrieder)
>>Subject: Re: PCI Modem Problems
>>[EMAIL PROTECTED] (Sethuraman Baranidharan) writes:
>>>Ok, I have a Lucent PCI modem 56K v.90 and I know it may not work,
>> ^^^^^^^^^^
>>Winmodem. Hopeless.
>Not Hopeless. Try reading this for a change:
>http://www.redhat.com/corp/support/hardware/intel/60/rh6.0-hcl-i.ld-15.html#misc-lvp
[...]
Hopeless. This is the "original" winmodem with the Mars chipset.
Michael
--
Michael Buchenrieder * [EMAIL PROTECTED] * http://www.muc.de/~mibu
Lumber Cartel Unit #456 (TINLC) & Official Netscum
Note: If you want me to send you email, don't munge your address.
------------------------------
From: [EMAIL PROTECTED] (M. Buchenrieder)
Subject: Re: setserial help
Date: Tue, 31 Aug 1999 07:35:02 GMT
Larry Dare <[EMAIL PROTECTED]> writes:
[...]
>My question is how do I setup my ttyS1
>Current setting:
>setserial /dev/ttyS0
>UART: 16550A Port 0x03f8 IRQ 4
>setserial /dev/ttyS1
>UART: unknown Port 0x02f8 IRQ 3
[...]
Uh-oh. Either your secondary serial port is partially disabled
in your CMOS setup, or the port is dead (or non-existant).
Michael
--
Michael Buchenrieder * [EMAIL PROTECTED] * http://www.muc.de/~mibu
Lumber Cartel Unit #456 (TINLC) & Official Netscum
Note: If you want me to send you email, don't munge your address.
------------------------------
From: "Marout Yasuo Borms" <[EMAIL PROTECTED]>
Subject: Re: DATA DDS-2
Date: Tue, 31 Aug 1999 13:16:11 +0200
Reply-To: "Marout Yasuo Borms" <[EMAIL PROTECTED]>
as long as it's scsi, it will do.
check /proc/scsi wether tapedevice is recognised. tape device should be st0
if so, then try mt_st to get stats on the tapedrive. if ths works you're in.
Oberdan Albertoni heeft geschreven in bericht
<[EMAIL PROTECTED]>...
>
>Hello,
>I want to know if the HP SureStore T20Xi or the MAST DAT DDS-2 Internal
4/8
>GB(120M)Mecc. HP SCSI is ok for Linux ?
>Thank you very much from Obe.
>
------------------------------
From: "Marout Yasuo Borms" <[EMAIL PROTECTED]>
Crossposted-To: comp.os.linux.misc
Subject: Re: Difficulties with SCSI disk drive. (Zero Partition)
Date: Tue, 31 Aug 1999 13:20:49 +0200
Reply-To: "Marout Yasuo Borms" <[EMAIL PROTECTED]>
try wether id's and termination is ok. adaptec controllers are known for
their erratic behaviour with poor or incorrect termination.
als see weter there is no fork construction in the cable (eg: both wide and
narrow connectors on controller used internally and extetrnal devices
present. If there are devices on both the internal connectors, then disable
low-termination.
maybe faulty cabling is the cause.... try replacing the cable.
most of my scsi trobles are one of these.
als disable scan (scsi config automagically) as this protocol leads to
trouble also. just be shure that only the devices at cable ends are
terminated.
Lyndon F. Bartels heeft geschreven in bericht
<7qfv5b$3a1$[EMAIL PROTECTED]>...
>Hello,
>
>I don't know what's wrong with the hard drive on my machine. Hopefully
y'all
>can help.
>
>My hardware:
>P-II 350. 192Meg of memory.
>Three disk drives: (All Ultra-Wide)
> Disk1 is a 4.5G Seagate Medalist Pro
> Disk2 is a 4.5G Seagate Medalist Pro
> Disk3 is a 9.1G Seagate Medalist Pro
>Controller is a Adaptec 2940UW Pro.
>
>Disk3 is composed of one partition. All data on this partition is web
pages.
>
>I'm getting interesting errors. The symptoms include "Input/output errors"
>when I try to rename a file. When I tried to unmount the drive I get
>a "device busy" error. But I'm the only one logged on, and not on that
device.
>Obviously a process had some file open. I checked, and I'm not
>out of space, not out of inodes either. I killed off a bunch of httpd
>processes, and could unmount the device. On the next reboot, the drive
didn't
>up on the controller's part of the boot. Tonight, when I powered the
machine
>up, the drive showed up again, but when I tried to e2fsck it, I got
>an error.
>
>I'm currently running RH6.0, kernel 2.2.5-15. I haven't installed any
updates
>yet. Below, I included some excepts from /var/log/messages from
>last night. Followed by my e2fsck attempt, and the /var/log/messages
entries
>added as a result. My gut tells me that there's something wrong with
>disk cacheing, but I could be wrong. I don't know if it's hardware or
software
>or both. The two 4.5s have never given me problems since the install.
>I have them set up with the OS, /home, and other areas. I later added the
>9.1Gigger for data. I used cfdisk to partition the drive. I copied the data
>from another computer, (via nfs) and I thought I was set. I started to
rename
>some of the files, etc, and starting getting long waits after each
>command. Then I started getting the Input/output errors trying to execute a
mv
>command.
>
>Anyway... any ideas?
>
>Thanks in advance,
>
>Lyndon F. Bartels
>[EMAIL PROTECTED]
>
>
>
>Aug 29 18:16:52 gl1500 kernel: scsi : aborting command due to timeout : pid
>41256, scsi0, channel 0, id 2, lun 0 Write (6) 01 c0 4d 02 00
>Aug 29 18:16:53 gl1500 kernel: SCSI host 0 abort (pid 41256) timed out -
>resetting
>Aug 29 18:16:53 gl1500 kernel: SCSI bus is being reset for host 0 channel
0.
>Aug 29 18:16:56 gl1500 kernel: (scsi0:0:2:0) Performing Domain validation.
>Aug 29 18:16:56 gl1500 kernel: (scsi0:0:1:0) Synchronous at 40.0 Mbyte/sec,
>offset 8.
>Aug 29 18:16:56 gl1500 kernel: (scsi0:0:1:0) Performing Domain validation.
>Aug 29 18:16:56 gl1500 kernel: (scsi0:0:1:0) Successfully completed Domain
>validation.
>Aug 29 18:16:56 gl1500 kernel: SCSI disk error : host 0 channel 0 id 2 lun
0
>return code = 26030000
>Aug 29 18:16:56 gl1500 kernel: scsidisk I/O error: dev 08:21, sector 114764
>Aug 29 18:20:07 gl1500 kernel: (scsi0:0:0:0) Synchronous at 40.0 Mbyte/sec,
>offset 8.
>.
>.
>.
>Aug 29 22:19:05 gl1500 kernel: scsi0 channel 0 : resetting for second half
of
>retries.
>Aug 29 22:19:05 gl1500 kernel: SCSI bus is being reset for host 0 channel
0.
>Aug 29 22:19:09 gl1500 kernel: (scsi0:0:1:0) Synchronous at 40.0 Mbyte/sec,
>offset 8.
>Aug 29 22:19:09 gl1500 kernel: SCSI disk error : host 0 channel 0 id 2 lun
0
>return code = 26030000
>Aug 29 22:19:09 gl1500 kernel: scsidisk I/O error: dev 08:21, sector 2
>Aug 29 22:19:38 gl1500 kernel: scsi0 channel 0 : resetting for second half
of
>retries.
>Aug 29 22:19:38 gl1500 kernel: SCSI bus is being reset for host 0 channel
0.
>Aug 29 22:19:41 gl1500 kernel: (scsi0:0:1:0) Synchronous at 40.0 Mbyte/sec,
>offset 8.
>Aug 29 22:19:41 gl1500 kernel: SCSI disk error : host 0 channel 0 id 2 lun
0
>return code = 26030000
>Aug 29 22:19:41 gl1500 kernel: scsidisk I/O error: dev 08:21, sector 2
>Aug 29 22:20:06 gl1500 kernel: (scsi0:0:0:0) Synchronous at 40.0 Mbyte/sec,
>offset 8.
>
>
># e2fsck -fy /dev/sdc1
>e2fsck 1.14, 9-Jan-1999 for EXT2 FS 0.5b, 95/08/09
>e2fsck: Attempt to read block from filesystem resulted in short read while
>trying to open /dev/sdc1
>Could this be a zero-length partition?
>
># tail messages
>Aug 30 23:26:28 gl1500 kernel: SCSI disk error : host 0 channel 0 id 2 lun
0
>return code = 28000002
>Aug 30 23:26:28 gl1500 kernel: extra data not valid Current error sd08:21:
>sense key Not Ready
>Aug 30 23:26:28 gl1500 kernel: Additional sense indicates Logical unit not
>ready, manual intervention required
>Aug 30 23:26:28 gl1500 kernel: scsidisk I/O error: dev 08:21, sector 2
>#
>
------------------------------
From: "Tony" <[EMAIL PROTECTED]>
Crossposted-To: comp.os.linux.networking,comp.os.linux.setup
Subject: Problems with setting up a EZ2000(NE2000 compatiable ) network card on Linux
Date: Tue, 31 Aug 1999 21:48:13 +1000
Hi
I have just got a EZ2000(NE2000 compatible) and have put it on my linux box.
When linux boots up it does not detect it. Can you please tell me how to
set it up.
Cheers
Tony
------------------------------
From: [EMAIL PROTECTED] (Lew Pitcher)
Subject: Re: WinModems
Reply-To: [EMAIL PROTECTED]
Date: Tue, 31 Aug 1999 11:43:57 GMT
On Tue, 31 Aug 1999 19:33:01 +1000, "Steve Macras" <[EMAIL PROTECTED]> wrote:
>Is there any way to get a WinModem to work?
Yes, write a driver for it.
>Maybe somebody is writing a emulator or something
Not unless you are that sombody.
>Thx
>Steve
>
>
Lew Pitcher
System Consultant, Integration Solutions Architecture
Toronto Dominion Bank
([EMAIL PROTECTED])
(Opinions expressed are my own, not my employer's.)
------------------------------
From: [EMAIL PROTECTED] (Jason C. Cotton)
Subject: Re: Please recommend a SILENT 10/100 Ethernet hub
Date: 30 Aug 1999 20:58:43 GMT
Michael Meissner <[EMAIL PROTECTED]> writes:
>[EMAIL PROTECTED] (Jason C. Cotton) writes:
>> Hi all,
>>
>> I recently purchased a SOHOware 10/100 Ethernet hub from CompUSA (Booooo!)
>> and stupidly put it (unopened) in a corner for a month. When I unpacked it
>> last night, I found (to my horror) that this hub has a LOUD fan, which
>> makes it unsuitable for use in my home office LAN. So, two questions:
>In addition to fan problems (mine had one too), it is also prone to lockups
>(which was a pain when I had my office in the upstairs bedroom and the other
>computers in the basement). In frustration, I went to higher priced 3com
>office connect hubs which work nicely, even when I had the hubs nearly 100 feet
>apart. However, the 3com's aren't cheap by any means.
Thanks for the reply! I assume that whichever 3com you acquired did not
use a fan (?). I would be willing to pay up for a reliable, *silent* hub
I guess. Do you have the model number of the 3com handy?
>> 1) Can anyone recommend a nice, relatively inexpensive, SILENT, compact,
>> 8 port 10/100 Ethernet hub?
>I think the netgear's are fairly quiet.
OK, I'll take that under advisement. Again, my requirement is for NO fan.
-Jason
------------------------------
From: nev okyay <[EMAIL PROTECTED]>
Subject: Re: panasonic cd writer cw-7582-B
Date: Mon, 30 Aug 1999 14:31:10 -0700
sorry, never mind. the problem was with the cable. I replaced the cable
and
now during boot it will identify the cd writer. "IRQ probe failed" message
was the clue. now forward to the next step. :)
Nev Okyay wrote:
> greetings-
> has anybody been able to use this IDE drive under linux? during boot,
> these are the messages
> I see:
>
> PIIX4: IDE controller on PCI bus 00 dev 09
> PIIX4: not 100% native mode: will probe irqs later
> ide0: BM-DMA at 0xe000-0xe007, BIOS settings: hda:pio, hdb:pio
> ide1: BM-DMA at 0xe008-0xe00f, BIOS settings: hdc:pio, hdd:pio
> hda: q, ATAPI UNKNOWN (type 18) drive
> hda: IRQ probe failed (0)
> ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
>
> it looks like it is not able to recognize this device as ATAPI device.
> one peculiar part
> of this message is BIOS settings. is there something I need to do with
> BIOS settings to
> get this drive to be recognized? can you please help with this?
> thanks,
> - nev
------------------------------
Subject: Re: zip scsi interface real scsi?
From: Les Schaffer <[EMAIL PROTECTED]>
Date: Tue, 31 Aug 1999 12:28:57 GMT
> Then you don't daisy chain them in the way you are used to. You'll
> need an *external* connector on the SCSI card.
if i understand your explanation correctly, doesnt sound like i can
connect off the card.
since the card sits on the bus, its the first in line. the zip drive
hooks to the card, so to preserve the line topology, i'd have to chain
off the back of the zip drive and bring a cable out the back of the
computer.
sounds like i should buy a scsi controller with an external
connector. i take it this works by allowing one chain to work
internally in the computer and another line working external. so to
not have a Y i guess the controller needs seed off 2 lines
somehow.. hmmm...
anyway, i have heard the card that comes with the umax scanner does
not work with linux. so its back to the drawing board or buy a real
scsi controller.
les
------------------------------
Date: 31 Aug 99 08:36:53 -0500
From: "Gene Heskett" <[EMAIL PROTECTED]>
Subject: Re: DATA DDS-2
Unrot13 this;
Reply to: <[EMAIL PROTECTED]>
Gene Heskett sends Greetings to Oberdan Albertoni;
OA> Hello,
OA> I want to know if the HP SureStore T20Xi or the MAST DAT
OA> DDS-2 Internal 4/8 GB(120M)Mecc. HP SCSI is ok for Linux ?
OA> Thank you very much from Obe.
It should be, although there are more eprom or eeprom revs to those
things than you've got socks in the drawer. Mine doesn't support
partitioning of the tape, no biggie IMO.
I'm using an 8 gig SSi, which is a techmar inside the box, many of these
are.
Cheers, Gene
--
Gene Heskett, CET, UHK |Amiga A2k Zeus040 50 megs fast/2 megs chip
Ch. Eng. @ WDTV-5 |A2091,GuruRom,1g Seagate,CDROM,Multiface III
|Buddha + 4 gig WDC drive, 525 meg tape
|Stylus Pro, EnPrint, Picasso-II, 17" vga
RC5-Moo! 690kkeys/sec isn't much, but it all helps
email gene underscore heskett at iolinc dot net
--
------------------------------
Subject: Re: Does Zoltrix Modem FM-VSP65i3 work under linux?
From: [EMAIL PROTECTED] (Rob Clark)
Date: Tue, 31 Aug 1999 14:06:08 GMT
In article <01bef3b2$ddbbe740$b33ba0d4@in-maciej>,
Maciej Pura <[EMAIL PROTECTED]> wrote:
>Does Zoltrix Modem FM-VSP56i3 work under linux?
>Does it need special driver for linux?
>If drivers necessary where I find it?
This modem has been reported to work with Linux. You do not
need special software... just set the jumpers and go.
http://www.zoltrix.com/MODEM-Drivers.HTM#FMVSP56i3
>Can it work under other Unix systems (FreeBSD, SCO, etc.)?
>Is it better buy external modem like Zoltrix FM-VSP56e?
It should work in any other OS as well. It is very similar to
the FM-VSP56e, so the usual comparisons between internal and external
modems apply.
Rob Clark, [EMAIL PROTECTED]
http://www.o2.net/~gromitkc/winmodem.html <-- Linux/modem compat. list
------------------------------
From: [EMAIL PROTECTED] (Christian Schulz)
Subject: Re: Dell 6300 PERC 2/SC performance
Date: Tue, 31 Aug 1999 13:00:04 GMT
Reply-To: [EMAIL PROTECTED]
On 26 Aug 1999 22:29:43 GMT, [EMAIL PROTECTED] (Ron Stanonik)
wrote:
>There appears to be a significant performance loss using the
>Dell PERC 2/SC RAID controller. We compared iozone results
>of a Dell 6300 PowerEdge with PERC and a Dell 610 workstation
>without PERC, and found the 6300 wrote eight times slower and
>read two times slower.
>
>Both are running RedHat 6.0, both have 10,000 RPM, Ultra-2 LVD disks.
>The 6300 has its PERC configured as RAID 5, and the latest driver
>from MegaRaid. We expected RAID 5 to affect write performance
>(four times slower) and not affect read performance. The 610 is
>using it's onboard AIC-7890/1 Ultra2-LVD.
>
>Anyone else tested the performance of the PERC 2/SC?
yes and I can say the performance is very very poor with the
recommendations from DELL or AMI.
If I write a big file or many small files the data transfer between
memory and hdisks stops after 4 sec for 3 -8 sec, but the hdisks
rattle. AMI wouldn't help me because the controller is from DELL and
DELL have not the faintest idea of this problem.
>Any configuration tricks?
I try many configurations. With W/B cache, write delay 4 sec, cached
IO and RAID1 the perfomance is fairly well.
>iozone is a simple program which writes, then reads, a big file.
where do I get this program?
>A file size about twice your RAM size is recommended to reduce
>the effect of buffering. Oddly, the smaller the file, the
>slower iozone runs on the 6300/PERC. Sounds like a buffering
>problem.
>
>The iozone results for the 610 were about what we expected,
>given the drive speed and geometry
> 18598368 bytes/second for writing the file
> 15493144 bytes/second for reading the file
>
>The drives have an average 212 sectors per track, so
> 212*512*10000/60 ~= 18090666 bytes/second
>
>Thanks,
>Ron Stanonik
>[EMAIL PROTECTED]
Christian
------------------------------
From: Artur Swietanowski <[EMAIL PROTECTED]>
Crossposted-To: comp.os.linux.misc,comp.os.linux.setup
Subject: Re: Dual Pentium II shows as Dual Celeron...
Date: Tue, 31 Aug 1999 16:24:48 +0200
Stuart Hall wrote:
> I disabled internal cache and enabled external cache last night and
> cat /proc/cpuinfo worked perfectly! I now have properly identified
> chips and cache amounts. Interestingly enough, though, the system
> seems to run a little slower - doh!
The detection of cache and processor type is really not important.
Not even half as important as the use of processor's internal cache.
Try using both internal and external cache, and in any case, use
the configuration that works better (faster) rather than the one
that reports the right CPU's.
> When I boot from loadlin I got the uncompressing linux and the
> system hung for about 20 seconds when usually it just rips right by
> that notification.
Exactly what could be expected. Internal cache works with full
processor speed, while with a 100 MHz bus speed, the external one
gives you very little speedup (if any).
HTH,
=====================================================================
Artur Swietanowski mailto:[EMAIL PROTECTED]
Institut f�r Statistik, Operations Research und Computerverfahren,
Universit�t Wien, Universit�tsstr. 5, A-1010 Wien, Austria
tel. +43 (1) 427 738 620 fax +43 (1) 427 738 629
=====================================================================
------------------------------
From: Curtis <[EMAIL PROTECTED]>
Crossposted-To: redhat.hardware.arch.intel
Subject: serial modem problems
Date: Tue, 31 Aug 1999 14:31:05 GMT
Hi I have a cardinal 56k external modem on com 2(dos) . I for the
instructions for seting up a dial up ppp conection when i use the usrnet to
conect it dosent initialize the modem and just sits there. i am runig a
dual boot system with Red Hat 5.2 and windows 95. Under Windoes 95 i gives
no setup as a standard modem. I had it working on my old commputer same
setup exept with win 3.1. if any one could help me out it would be gratly
apreciated .
thanks
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