Subject: Re: Web load causes reboot
To: None <firstname.lastname@example.org>
From: Manuel Bouyer <email@example.com>
Date: 08/04/1999 16:39:31
On Wed, Aug 04, 1999 at 09:28:49AM -0400, D'Arcy J.M. Cain wrote:
> Same thing I see in the same address neighbourhood. How much memory and
> swap do you have?
32MB RAM, swap:
Device 1K-blocks Used Avail Capacity Priority
/dev/sd2b 100700 1412 99288 1% 0
/dev/sd1b 100700 1464 99236 1% 0
/dev/sd0b 51480 4 51476 0% 1
Total 252880 2880 250000 1%
> > System is a p100 with 100Mbs DEC 21140A ethernet, running www, ftp and sup
> > services.
> > www traffic is moderate, but ftp traffic has increased a lot in the last
> > few days, especially due to what looks like a squid cache which seems
> > to mirror the whole NetBSD 1.4 tree with several concurent connections.
> Mine runs www, Radius and PostgreSQL. I suspect that the actual bug has
> nothing to do with the actual programs running but rather with the amount
> of activity.
> I wrote a program to allocate lots of memory and write something in it
> and watched with top -osize while it chewed up 127M of memory. At that
> point it starting failing to allocate but before that it accessed swap
> so my original thought that there was something wrong with swap functions
> seems to be incorrect. I am really at a loss.
If bill's theory is correct (and I fear it is), spl being lowered at
the wrong time can cause various kind of failures, including probably
corrupting some VM internal datas.
Manuel Bouyer, LIP6, Universite Paris VI. Manuel.Bouyer@lip6.fr