Linux-Misc Digest #845, Volume #26 Thu, 18 Jan 01 00:13:02 EST
Contents:
Re: setting up Win to access lin (ext2) files systems on the same computer? (i.e.
dualboot system) (Dances With Crows)
Serial console to Router? (Michael Moon)
RH 6/7 targeted by worm ("Buck Turgidson")
Re: looking for a2ps utility for HPII printer (Bob Martin)
Re: HELP!! New hard drive install on Linux... (Noble Pepper)
Re: fax and pager softwares for linux (E J)
Re: Linux IDE RAID Cards (Bob Hauck)
Re: Help with 2.4 upgrade (Noble Pepper)
Re: open-source Visio app? (The Ghost In The Machine)
Re: disable mail for each cron job ("Marco Janker")
Boot loaders (Noble Pepper)
Re: Help with 2.4 upgrade (Glitch)
Re: fetchmail (Steve Connet)
Re: fetchmail (Steve Connet)
cutting & pasting (Steve Connet)
Re: Recovery from Win98 crash, Linux saves!. Need some advise (Glitch)
Re: Linux on a 64MB flash disk ("Filip Atanassov")
Re: cutting & pasting (Noble Pepper)
Re: mpeg_encode questions (Dances With Crows)
Re: why can't i find any good GUI file managers? (Steve)
Re: L2-Cache of Pentium2 with Linux ("Edmund Fok")
----------------------------------------------------------------------------
From: [EMAIL PROTECTED] (Dances With Crows)
Crossposted-To: alt.os.linux.slackware
Subject: Re: setting up Win to access lin (ext2) files systems on the same computer?
(i.e. dualboot system)
Date: 18 Jan 2001 01:11:38 GMT
Reply-To: [EMAIL PROTECTED]
On Wed, 17 Jan 2001 23:55:47 GMT, Gaiko Kyofusho staggered into the
Black Sun and said:
>Hi, i am a networking newbie and was told that the only (please
>tell me there are other ways to do it) way to have win see/read
>lin file systems is by using samba. I am rather unfamiliar with
>samba and was wondering (assuming there and no reasonable
>alternatives) if there are some newbie/spoon feeding type howtos
>on setting up samba to read lin partitions on the same computer.
Google search for "explore2fs". It works with 9x and NT, don't know
about 2K but doubtful. (I tried several HFS-reading utilities for NT on
a 2K box; they refused to see an HFS-floppy. HFS!=ext2fs, but if MS has
changed all their internal filesystem mangling between NT and 2K....)
Anyway, SAMBA is a Unix program, so it is pretty much impossible to run
SAMBA on a computer if you're running 'Doze on that computer. You could
run your 'Doze session in a VMWare box under Linux, but that would
probably not give you exactly what you want in terms of file access.
Heck, explore2fs is not particularly transparent to the end-user, but it
is probably the best thing there is atm.
--
Matt G|There is no Darkness in Eternity/But only Light too dim for us to see
Brainbench MVP for Linux Admin / Workin' in a code mine, hittin' Ctrl-Alt
http://www.brainbench.com / Workin' in a code mine, whoops!
=============================/ I hit a seg fault....
------------------------------
From: Michael Moon <[EMAIL PROTECTED]>
Subject: Serial console to Router?
Date: Wed, 17 Jan 2001 16:53:43 -0800
Reply-To: [EMAIL PROTECTED]
Would anyone be able to let me know (in general) what I need to do to
setup a serial port so that I can console into a Cisco Router? I have
setup minicom, but no response. I am using a laptop and trying to setup
the external serial port (COM1 - ttys0). The configuration I have works
OK on my windows machine, but I want to get a console session using
Linux Redhat 6.2 on a laptop.
Thanks in advance,
------------------------------
From: "Buck Turgidson" <[EMAIL PROTECTED]>
Subject: RH 6/7 targeted by worm
Date: Thu, 18 Jan 2001 01:39:02 GMT
I ran across this on CNet today, in case anyone is interested.
http://two.digital.cnet.com/cgi-bin2/flo?y=eBRa0H8Od0U0Z4Qs
------------------------------
From: Bob Martin <[EMAIL PROTECTED]>
Subject: Re: looking for a2ps utility for HPII printer
Date: Wed, 17 Jan 2001 19:47:32 -0600
John D Prokopek wrote:
>
> does anyone know of an a2ps print utility that work with an HPII
> compatible printer?
>
> thanks, I appreciate the help
>
a2ps converts ascii to postscript and has nothing to do with
individual printers. If I remember , the HPII needed a cartridge
to support postscript.
--
Bob Martin
------------------------------
From: Noble Pepper <[EMAIL PROTECTED]>
Subject: Re: HELP!! New hard drive install on Linux...
Date: Wed, 17 Jan 2001 20:14:38 -0600
Steve Withers wrote:
> Noble Pepper wrote:
>>
>> James Ayton, Jr. wrote:
>>
>> > My set up is as follows...
>> >
>> > I have an 18 gig hard drive with Windows 2000 and Windows 98 dual
>> > booting, this drive is C:\, and is connected to my Ultra ATA66
>> > controller.
>> >
>> > I have a 4 gig drive with Corel Linux that is connected to the IDE
>> > connector on the mother board. The Linux controls the MBR, as Corel's
>> > OS
>> > loader pops up on start up, and I can select either Linux or Windows.
>> > If I select Windows, it goes to Windows 2000 OS Loader to select
>> > between 2000 and 98.
>> >
>> > I want to add a new 45 Gig drive as D: to the Ultra ATA66 controller.
>> > However, all drives connected to this controller are assigned drive
>> > letters
>> > before the IDE connectors on the mother board are. So, if I have them
>> > all
>> > connected, all I see are the letters 'LI' when I start up. Is there a
>> > way to tell the MBR that the Corel's Linux OS Loader is on drive E:
>> > now?
>> >
>> > Thanks,
>> > James Ayton, Jr.
>> >
>> If you get LI you must be using LILO. I believe LILO can only boot off
>> the first two ide drives. http://www-scf.usc.edu/~vibber/linux may help
>> some. There are other boot loaders that can boot off higher numbered
>> drives but I have no experience with them.
>
> If you boot from your /boot partition (20MB's is all you need) on one of
> the first two drives then have /root elsewhere, you should be able to
> get away with it.
>
> You may have to re-install LILO. I assume you have boot floppies?
>
Yeah, now I get on about my problem.
I have two drives on ide1. hda is a 8 gig with w98 and Mandrake 6.1 on it.
hdb is a 20 gig with a LFS system and Mandrake7.0 and i forget what else so
they don't matter much.
ide2 has cd and LS120 floppy on it.
I have installed Ultra ATA/100 PCI and a 40gig on hde, got the kernel
patched and a partition formatted to play with. (hardware is cheap after
Xmas). I have and have read howto's etc for ATA and the Multi Disk howto
Lilo doesn't want to boot directly to hde (duh).
Objective:
keep W98 on hda, anything else need to fit in 3 gig.
move the linux systems to hde (and keep them there for performance).
reformat 8 gig to put in another box.
Questions:
When setting up as you describe, what is the best approach? /, /boot, /etc,
etc on a partition on hda, all kernels on hda, mount over / with other
partitions or just subtrees, that kind of stuff.
How do I tell where my boot record is? It has been a long time, quite a few
things learned and I don't remember where I installed lilo.
Is it possible to disable onboard ide so the ATA/100 is hda, hdb, hdc, hdd?
Does anybody have experience with W98 and ATA/100 in a dual boot system?
W98 hoses the setup trying to do PnP and then I have to unistall
(physically) to get it back to a usable state.
I can unplug power to the drive to prevent W98 from trying to set up and
everything works, what is the color code on the wiring so I can just put in
a switch? (I could just use a 4pole and break everything I guess)
------------------------------
From: E J <[EMAIL PROTECTED]>
Subject: Re: fax and pager softwares for linux
Date: Thu, 18 Jan 2001 02:49:16 GMT
efax
pager-D.I.Y. At work, I used a perl script to post it on a http site that
contains pager sender web page.
[EMAIL PROTECTED] wrote:
> hallo,
> i am looking for a fax and pager softwares for linux that are reliable
> (not beta) but more importantly they should be programmable via a API...
>
> please let me know,
>
> danke,
> A
>
> Sent via Deja.com
> http://www.deja.com/
------------------------------
From: [EMAIL PROTECTED] (Bob Hauck)
Crossposted-To: comp.os.linux.hardware,comp.os.linux.advocacy
Subject: Re: Linux IDE RAID Cards
Reply-To: bobh{at}haucks{dot}org
Date: Thu, 18 Jan 2001 02:43:58 GMT
On Tue, 16 Jan 2001 00:45:19 -0500, Gary <[EMAIL PROTECTED]> wrote:
> We are currently working on LINUX (in alpha) and Macintosh (in Beta)
> support software.
The poster was asking about RAID systems known to work with Linux.
> Some things you CAN have (at least with our products) using
> IDE RAID
Uh, but not yet on Linux, right? That _was_ the question. Are you
*sure* you don't work in Marketing?
> Do you think we'll have a hard time finding people to sign up to test
> our BETA LINUX app? I hope not :-)
Maybe, maybe not. But people looking for a production-ready system
probably won't.
--
-| Bob Hauck
-| To Whom You Are Speaking
-| http://www.haucks.org/
------------------------------
From: Noble Pepper <[EMAIL PROTECTED]>
Subject: Re: Help with 2.4 upgrade
Date: Wed, 17 Jan 2001 20:57:20 -0600
[EMAIL PROTECTED] wrote:
<snip>
> collect2: ld returned 33 exit status
> *** The command '/usr/bin/gcc -o conftest -g conftest.c' failed.
> *** You must set the environment variable CC to a working compiler.
>
> and when I echo $CC it says /usr/bin/gcc
> and as far as I know it is a working compiler.
>
Someone else may be able to tell you exactly what is happening, but....
When I run into this I look in the makefile to see what is in conftest.c,
either modify the makefile to make a copy that survives after the compile
attempt or just type it in myself. Then run the command the makefile tried
to execute (as above) and then fix the problem using the error messages
that you now get that the makefile doesn't show you.
>
>
> Sent via Deja.com
> http://www.deja.com/
>
------------------------------
From: [EMAIL PROTECTED] (The Ghost In The Machine)
Crossposted-To: alt.visio,comp.os.linux.development.apps,linux.redhat.misc
Subject: Re: open-source Visio app?
Date: Thu, 18 Jan 2001 02:56:36 GMT
In comp.os.linux.development.apps, buddy_holly
<[EMAIL PROTECTED]>
wrote
on Wed, 17 Jan 2001 11:33:07 -0900
<[EMAIL PROTECTED]>:
>Is there anything like Visio that runs on Linux?
>
>thanks in advance to any help
Xfig isn't too bad. Dunno where you can get it, but it's freeware.
>
>
--
[EMAIL PROTECTED] -- insert random misquote here
EAC code #191 6d:01h:25m actually running Linux.
Darn. Just when this message was getting good, too.
------------------------------
From: "Marco Janker" <[EMAIL PROTECTED]>
Subject: Re: disable mail for each cron job
Date: Thu, 18 Jan 2001 11:11:25 +0800
David Efflandt <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]...
> On Tue, 16 Jan 2001, Marco Janker <[EMAIL PROTECTED]> wrote:
> >
> >I set up some tasks handled by CRON. Now I get everytime an e-mail. How
can
> >I disable this?`
>
> man 5 crontab
> Tells you how not to get any mail from any cron jobs for that user.
> Or if you don't want mail for a specific command in crontab add this to
> the end of that commandline:
>
> > /dev/null 2>&1
>
> --
> David Efflandt [EMAIL PROTECTED] http://www.de-srv.com/
> http://www.autox.chicago.il.us/ http://www.berniesfloral.net/
> http://cgi-help.virtualave.net/ http://hammer.prohosting.com/~cgi-wiz/
Thanks, I managed it!
------------------------------
From: Noble Pepper <[EMAIL PROTECTED]>
Subject: Boot loaders
Date: Wed, 17 Jan 2001 21:36:50 -0600
I need to be able to boot from hde.
Does anyone have recommendations for boot loaders other than lilo? grub?
nuni? others?
I have seen a patch for lilo that claims to be able to boot from hde. Any
recommendations on patches of this sort?
BTW: I really don't want to use commercial products like boot magic.
------------------------------
Date: Wed, 17 Jan 2001 23:01:25 -0500
From: Glitch <[EMAIL PROTECTED]>
Subject: Re: Help with 2.4 upgrade
[EMAIL PROTECTED] wrote:
> Hi I downloaded the new linux-2.4.0.tar.gz and am trying to upgrade.
> My specific problem is with trying to configure binutils.
> From the linux/Documentation/Changes file, which the README says to
> read,
> it says I need atleast the revision numbers specified for certain
> software.
> my binutils was
> $ ld -v
> GNU ld version 2.9.1 (with BFD 2.9.1.0.23)
> and the specified one is 2.9.1.0.25 so I decided to upgrade binutils.
> The latest one I got was binutils-2.10.1.0.4
> I have gcc --version 2.91.66 (as recommended)
> Gnu Make 3.77 (as recommended)
> however when I try to do a ./configure in the binutils directory
> I get the following error message:
>
> Configuring for a i686-pc-linux-gnu host.
> Created "Makefile" in /usr/home/mbil/kernels/binutils-2.10.1.0.4 using
> "mt-frag"
> collect2: ld returned 33 exit status
> *** The command '/usr/bin/gcc -o conftest -g conftest.c' failed.
> *** You must set the environment variable CC to a working compiler.
>
> and when I echo $CC it says /usr/bin/gcc
> and as far as I know it is a working compiler.
>
> any help would be greatly appreciated.
> thanks
>
Are you using Red Hat 7.0? I think that gcc was 'broken' in RH 7.0. You
should upgrade your gcc or change the $CC variable to kgcc. I think that
is what most people are saying to do as a solution.
HTH
------------------------------
Subject: Re: fetchmail
From: Steve Connet <[EMAIL PROTECTED]>
Date: Thu, 18 Jan 2001 03:51:02 GMT
Sean <[EMAIL PROTECTED]> writes:
> # Source function library.
> . /etc/rc.d/init.d/functions
>
> # Source networking configuration.
> . /etc/sysconfig/network
What do these do? Is this telling the script to "include" these files
so you can use function in them? Or is this executing these files?
> # Check that networking is up.
> [ ${NETWORKING} = "no" ] && exit 0
Is this a predefined environment variable or something?
> # Check that fetchmailrc exists.
> [ -s /etc/fetchmailrc ] || exit 0
Are these implied "if" statements? I really must take a class in bash
script or buy a book or something. What does the "-s" do? I thought
you use "-f" to test if the file exists?
> if [ ! -f /var/lock/subsys/fetchmail ]; then
> echo -n "Starting Fechmail services: "
> daemon fetchmail -d 60 -f /etc/fetchmailrc
What is the purpose of /var/lock/subsys? Is this a list of all running
daemons or something? Why do you use the word "daemon" when executing
the fetchmail program? Doesn't the "-d" tell fetchmail to go into
daemon mode by itself?
> RETVAL=$?
> echo
Hmm... kinda cryptic here. What is "$?"? And why just a plain 'echo'
command? That doesn't do anything, does it?
> $0 stop
> $0 start
Aw, I think I get it. These call the script iteratively. The "$0" must
be the 1st item of the passed arguments, which must be the name of the
script.
> killproc fetchmail -HUP
What's the difference between 'killproc' and just 'kill?'
> ;;
What do these do?
--
Steve Connet ([EMAIL PROTECTED])
------------------------------
Subject: Re: fetchmail
From: Steve Connet <[EMAIL PROTECTED]>
Date: Thu, 18 Jan 2001 03:52:16 GMT
[EMAIL PROTECTED] (Bob Schreibmaier) writes:
> On my system, I created a .fetchmailrc file in the root directory
> and put the following line in the rc.local file:
Your idea seemed simplest. Thanks. I put mine in /etc/fetchmailrc
though and made it so only root could read it. And put the startup in
the rc.local like you.
Works good.
--
Steve Connet ([EMAIL PROTECTED])
------------------------------
Subject: cutting & pasting
From: Steve Connet <[EMAIL PROTECTED]>
Date: Thu, 18 Jan 2001 04:00:11 GMT
Hi...
I am having a difficult time copying and pasting using linux. Say I
copy something by hilighting it, then I want to paste it
somewhere. But that somewhere already has text. So I hilight that text
to delete it. But then that text is now copied thus losing my old
copy.
The copy and paste mechanism seems to make you perform an extra step
of first going to the place you want it to make sure it is empty. Then
go to what you want to copy and hilight it. Then go back to the place
you want it and paste it. Then seems bad to me.
I really don't like the hilight automatically copying something
because of the reasons above. I'd much rather hilight it, then have to
press a key to copy (like Ctrl-C or something). Then go to the place I
want it and be able to hilight the text I *don't* want without it
copying. Press the delete key. Then paste in the text I want.
Is that possible? What are your thoughts?
--
Steve Connet ([EMAIL PROTECTED])
------------------------------
Date: Wed, 17 Jan 2001 23:05:58 -0500
From: Glitch <[EMAIL PROTECTED]>
Subject: Re: Recovery from Win98 crash, Linux saves!. Need some advise
mike wrote:
> Hi,
> my girlfriend had Win98 on her Dell c:\ drive and I added a d:\
> drive.
> On part of it, I installed Redhat Linux 6.1. I had setup a DOS batchfile
>
> on the c:\ drive to execute loadlin and boot to Linux.
> Yesterday, I tried a trick to shorten the time to boot to Linux.
> Instead
> of going to Win98 and shutting down into DOS to boot Linux,
> while the system was booting, I hit "control-F5", which on my Win95
> machine, jumps the system into DOS without booting Windows.
> What happened was a glitch that crashed her Win98 system. Upon
> boot, the Win98 system said, " missing operating system" or "no
> operating system". I did an fdisk /mbr to no avail. I was going to
> do a "sys c:" from a Win98 boot floppy, but decided to wait and
> study the system.
> In DOS, I looked at the c:\ directory structure and found that
> basically everything was intact except the the "C:\WINDOWS"
> directory was missing !!!!.
> I was able to boot into Linux from a boot floppy and mounted
> the c:\ drive.
> Low and behold, there in the bright light of the cathode ray tube
> of the computer's monitors display was: "THE C:\WINDOWS"
> DIRECTORY.!!!!.
> Somehow Linux can see and access this directory, but WINDOWS 98
> can't see its own directory. The Windows 98 directory is , litterally,
> invisible to Windows.
> How can this be?
> I was thinking, if all else fails, to copy the c:\windows directory
> to the d:\drive and then recreate a c:\windows directory and copy back
> the contents.
> Any ideas at restoring the Win98 system so I don't get crashed, by
> my girlfriend. :-) ?
why don't you ask a Windows newsgroup as this is a Windows problem, not
Linux.
but for the record, did you check the attributes of the C:\windows
directory to see if it was just marked as hidden? Of course the MBR
should have still been able to find the directory even if it was hidden
but it was just an idea.
------------------------------
From: "Filip Atanassov" <[EMAIL PROTECTED]>
Crossposted-To: comp.os.linux.embedded
Subject: Re: Linux on a 64MB flash disk
Date: Thu, 18 Jan 2001 04:15:32 GMT
http://www.linuxdevices.com/articles/AT8482313700.html
Nils M. Lunde <[EMAIL PROTECTED]> wrote in message
news:93entu$ugp$[EMAIL PROTECTED]...
> Hello!
>
> I'm about to install Linux on a PC/104 card with a 64MB flash disk.
> Most of the Linux distributions I've seen requires a lot more than 64MB,
so
> I'm wondering if anyone have suggestions on a Linux distribution I can
use.
>
> -Nils Magne
>
>
------------------------------
From: Noble Pepper <[EMAIL PROTECTED]>
Subject: Re: cutting & pasting
Date: Wed, 17 Jan 2001 22:17:00 -0600
Sounds like you are using KDE, you would likely get more response in
comp.windows.x.kde.
This is all a matter of what you are used to, I am having some difficulty
learning this behaviour too. But... in the days before Windoze, Lotus 123
performed copies "backward", go where you want to put something, issue copy
command (/c?) go where it comes from, select it, press enter. When I hit
windows, it took _forever_ to unlearn this method, very frustrating.
Steve Connet wrote:
> Hi...
>
> I am having a difficult time copying and pasting using linux. Say I
> copy something by hilighting it, then I want to paste it
> somewhere. But that somewhere already has text. So I hilight that text
> to delete it. But then that text is now copied thus losing my old
> copy.
>
> The copy and paste mechanism seems to make you perform an extra step
> of first going to the place you want it to make sure it is empty. Then
> go to what you want to copy and hilight it. Then go back to the place
> you want it and paste it. Then seems bad to me.
>
> I really don't like the hilight automatically copying something
> because of the reasons above. I'd much rather hilight it, then have to
> press a key to copy (like Ctrl-C or something). Then go to the place I
> want it and be able to hilight the text I *don't* want without it
> copying. Press the delete key. Then paste in the text I want.
>
> Is that possible? What are your thoughts?
>
------------------------------
From: [EMAIL PROTECTED] (Dances With Crows)
Subject: Re: mpeg_encode questions
Date: 18 Jan 2001 04:22:05 GMT
Reply-To: [EMAIL PROTECTED]
On Tue, 16 Jan 2001 01:56:15 GMT, Gary Eckhardt staggered into the Black
Sun and said:
>In searching through Deja I found that other people have gotten help on
>this topic in the past in this group, so hopefully someone will be able
>to help me.
>
>I'm trying to use mpeg_encode to create a time-lapse mpeg of the images
>from my webcam. The webcam stores the image every 10 minutes, so at
>the end of the day I end up with 136 images. I would like to display
>these images approximately .5-1 second apart to create the time-lapse
>effect.
>
>For the life of me, I cannot figure out how to get mpeg_encode to do
>this for me!!!
>
>I've tried these parameters, and many others, based on my findings on
>the 'net, but a curious thing happens when I encode my images. I only
>get about 1/3 of the way in and suddenly the mpeg is done.
>
>I've even tried repeating my input files to correspond to the framerate
>and GOP, trying to repeat the file name 24 times and when I do THAT,
>the resulting MPEG is EVEN SHORTER?! What the heck is going on?
>
>--------------------------------------
>OUTPUT movie.mpg
>INPUT_DIR .
>
>INPUT
>`ls ./wcimages/2001/01/14/*.jpg`
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
This actually makes it through mpeg_encode's syntax parser? Or do you
insert the output of the "ls" command directly into the .param file?
I get a syntax error when trying something similar-- it chokes on the
`ls ./stuff*.ppm`, though `ls stuff*.ppm` works well as the program
chdirs to INPUT_DIR before doing the ls.
>END_INPUT
>###################################################
>#other input statement:
>#`ls ./wcimages/2001/01/14/*.jpg | awk -f x24.awk`
>###################################################
>
>BASE_FILE_FORMAT JPEG
>INPUT_CONVERT *
>
>IQSCALE 8
>PQSCALE 10
>BQSCALE 25
>
>PATTERN IBBPBBPBBPBBPBBPBBPBBPB
>
>FORCE_ENCODE_LAST_FRAME
>GOP_SIZE 24
>SLICES_PER_FRAME 1
>PIXEL HALF
>RANGE 10
>PSEARCH_ALG LOGARITHMIC
>BSEARCH_ALG SIMPLE
>REFERENCE_FRAME ORIGINAL
>-------------------------------------
The parameter file as given here would encode each image in
./wcimages/2001/01/14/*.jpg as one frame, making the movie 24x faster
than it should be if you want the thing displayed as 1 frame/second. I
suppose you could repeat each image 24 times within the .param file...
Something like:
INPUT
`for i in wcimages/2001/01/14/*.jpg ; do echo $i ; echo $i ; echo $i
[.24x.] ; done` #all on one line, or use \<RETURN> to split a line
INPUT_END
I did something like this (only repeating each frame 3x) on a set of
PPMs and got the expected result. Hope this doesn't come too late to be
of use to you....
--
Matt G|There is no Darkness in Eternity/But only Light too dim for us to see
Brainbench MVP for Linux Admin / Workin' in a code mine, hittin' Ctrl-Alt
http://www.brainbench.com / Workin' in a code mine, whoops!
=============================/ I hit a seg fault....
------------------------------
From: Steve <[EMAIL PROTECTED]>
Subject: Re: why can't i find any good GUI file managers?
Date: Thu, 18 Jan 2001 02:30:31 +0000
Anurodh Pokharel wrote:
>
> i use linux with window maker as the primary OS on my system.
> But for some reason, i cant find any file managers that i could use with
> eas for ordinary stuff that you day to day. i dunno it might just be me
> but i toyed around with stuff on
> freshmeat and a search in google but nothing is fast nor easy to use.
Have you tried xfm or tkmc?
--
Steve Ackman
Glass Host, Arts & Crafts http://www.delphi.com/crafts
Metamorphosis Glassworks Page http://twovoyagers.com/metamorphosis
------------------------------
From: "Edmund Fok" <[EMAIL PROTECTED]>
Crossposted-To: comp.os.linux.hardware
Subject: Re: L2-Cache of Pentium2 with Linux
Date: Thu, 18 Jan 2001 04:36:55 GMT
"Peter T. Breuer" <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]...
> In comp.os.linux.hardware Peter T. Breuer <[EMAIL PROTECTED]> wrote:
> > In comp.os.linux.hardware fred smith <[EMAIL PROTECTED]>
wrote:
> >> Jean-David Beyer <[EMAIL PROTECTED]> wrote:
> >> : In the little test, the dropoff as I exceeded the size of the L1 and
L2
> >> : caches was extremely well-pronounced, even though the machine was 0%
>
> >> Just for kicks I ran it on my K6-2/350 (RH 6.2) and got what seem like
> >> interesting results. I've got a FIC VA503+ motherboard which purports
> >> to have a 1meg L2 cache. here's the test results:
>
> Actually, now I look closer, there is evidence for a 32KB cache, and then
> a 512KB or a 1MB one. It may be that your cache is not all of it set up to
> cache writes (writeback? writethru?)
Actually the L1 Cache is 1/2 instruction and 1/2 data. so 32KB for data.
I suspect the minimal performance impact of the L2 Cache is because it runs
at the speed of your FSB, ie not internal. So it runs at less than 100 MHz
(or even 66 MHz depending on what
you set your FSB to be) compared to the 350 MHz L1 Cache, thus it has alot
less bandwidth.
The benefits that the L2 SRAM has over your SDRAM is that it has less
latency so there isn't
a very big performance difference. The P2 runs its 512KB L2 cache at 1/2
CPU speed so
its alot faster than that of the K6-2's motherboard cache. If you try a
K6-3 or K6-2+ with internal cache, or a P3 or Thunderbird Athlon, you'll
find that the L2 Cache performance is
much higher given Full CPU speed L2 Cache.
Hope it helps you,
Edmund
> >> *** MEMORY WRITE PERFORMANCE (256 MB LOOP) ***
> >> size = 64 bytes: 853.333 MB/s
> >> size = 128 bytes: 948.148 MB/s
> >> size = 256 bytes: 984.615 MB/s
> >> size = 512 bytes: 1024.000 MB/s
> >> size = 1024 bytes: 984.615 MB/s
> >> size = 2048 bytes: 1024.000 MB/s
> >> size = 4096 bytes: 1066.667 MB/s
> >> size = 8192 bytes: 1024.000 MB/s
> >> size = 16384 bytes: 1024.000 MB/s
> >> size = 32768 bytes: 984.615 MB/s
> >> size = 65536 bytes: 193.939 MB/s <======== This makes sense, it's
a
> >> size = 131072 bytes: 193.939 MB/s 64kb L1 cache
> >> size = 262144 bytes: 148.837 MB/s
> >> size = 524288 bytes: 126.108 MB/s
> >> size = 1048576 bytes: 100.787 MB/s <===== The drop-off around 1 meg
> >> size = 2097152 bytes: 80.503 MB/s doesn't seem to be any greater
than
> >> size = 4194304 bytes: 75.294 MB/s the drop-offs that occur in a
gradation
> >> size = 8388608 bytes: 74.419 MB/s above it.
>
> > Indeed, I see no evidence of an L2 cache. The results are roughly
consistent with there
> > not being one. I'm not prepared to go into a second order analysis!
>
> > By the way, I have an old P100 on which the results are flat at 20MB/s
as far as the eye
> > can see. I suspect it has a broken mobo cache.
>
>
> >> *** MEMORY READ PERFORMANCE (256 MB LOOP) ***
>
> >> size = 16384 bytes: 1163.636 MB/s
> >> size = 32768 bytes: 1113.043 MB/s
> >> size = 65536 bytes: 400.000 MB/s <===== Again, this looks right.
>
> Here it's clear that on read there is a 64KB cache.
>
> >> size = 131072 bytes: 400.000 MB/s
> >> size = 262144 bytes: 290.909 MB/s
> >> size = 524288 bytes: 241.509 MB/s
> >> size = 1048576 bytes: 186.861 MB/s <==== more obvious dropoff here
than
>
> and not so obvious. Looks more like 512KB cache to me.
>
> >> size = 2097152 bytes: 147.126 MB/s the one above, but not major.
>
> > You'd have to graph it to see if the slope changes here. You might have
a read cache.
>
> I meant to say: a cache that works for reading but doesn't do a lot on
writing .. i.e. it
> goes through synchronously on write. Writethru?
>
> >> size = 4194304 bytes: 134.031 MB/s
> >> size = 8388608 bytes: 132.642 MB/s
>
>
> Peter
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