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Old 07-10-2002, 01:01 PM   #1
BenV
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Registered: Jun 2002
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Distribution: Slackware 8
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Question Kernel Panic ???


Hej there folks.

A few months ago I changed my Windows NT 4.0 server to Linux (Slackware 8.0), because I was sick of NT 4 crashing every couple of days.
This is the first machine I really run linux on for a purpose, I had another machine running it just for fun and testing, but that's about all my experience with it

Anyhow, I thought things were going quite smooth, apache runs, samba even works as PDC and I even got my ftp server back up and running.

However, now the problem: Every once in a while, the machine kills itself with kernel panic, in appearantly random processes. First I blamed Samba, but even when not running samba it seems to happen. Especially when doing a lot of stuff concerning file transfers (i.e. moving an entire Cd image from one place to another, whether that's through samba, ftp or local doesn't make a difference) it seems to happen...

I have used hdparm to speed things up, however, I disabled it to make sure it didn't cause it and it still happens.
I upgraded the kernel to 2.4.18, and although the machine boots a lot faster, it still panics once every while.

Of course, I figured: well, it may very well be the memory. So I ran memtest (www.memtest86.com) on it for a night, nothing bad.

Switched the processor a few times, had a Pentium 120 Mhz in it, now it's a Pentium MMX 200 Mhz. No difference....

Any ideas anyone?
(or any more information needed, if so, how can I get that info?)

Oh btw, the harddisks (2) are not the problem, since they're quite new Maxtor disks, 20 Gb each.

Thanks for reading,

BenV
 
Old 07-10-2002, 01:19 PM   #2
Mara
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There's no "Out of memory" error. The kernel hangs or kills processes.
I think it may be the reason. Try to add some RAM or increase swap. It should help.
 
Old 07-10-2002, 02:03 PM   #3
BenV
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Registered: Jun 2002
Location: Netherlands
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At the moment I have 64 Mb RAM and 128 Mb swap... how much would you recommend?
Also, if the system would run out of memory, wouldn't I hear something about that in my syslog or something like that?

**update**: I've increased my swap space to 256 Mb.
But alas, my machine still died when I tried to copied a cd image to it's secondary disk....

Last edited by BenV; 07-10-2002 at 03:45 PM.
 
Old 07-10-2002, 05:03 PM   #4
Mara
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I can only speak from my experience. Pentium 120, 64MB RAM. Had similar problems with 140MB swap. With ~300MB was OK. I don't copy big files on this machine, but it reads/writes much data from netwok.
 
Old 07-10-2002, 05:22 PM   #5
BenV
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Registered: Jun 2002
Location: Netherlands
Distribution: Slackware 8
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Well, it doesn't seem to be the case here.... (unfortunately)... when I'm copying files to the machine, "free" reports almost no swap usage either, so I think it's something else.... but what????
anyone?
 
Old 07-11-2002, 04:59 AM   #6
Mara
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Maybe a kernel bug? have you tried with another one?
 
Old 07-11-2002, 07:32 AM   #7
BenV
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Registered: Jun 2002
Location: Netherlands
Distribution: Slackware 8
Posts: 21

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I've tried with the default kernels from the Slackware install disk (2.2.? as wel as 2.4.5), which were slower but as far as I can tell they crashed like the current one.... (2.4.18)
 
  


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