Subject: Re: i386 1.4Q hangs nonrandomly?
To: Simon Burge <simonb@NetBSD.ORG>
From: Matthew Orgass <email@example.com>
Date: 01/28/2000 18:15:58
On Fri, 28 Jan 2000, Simon Burge wrote:
> Initially I'd guess it was a different problem. Note that grep(1)
> will allocate memory for the contents of a file until it hits a \n,
> and obviously this doesn't occur for /dev/zero. With two greps on
> /dev/zero, you'll very quickly get two processes trying to allocate
> a large amount of memory (128MB each on my -current i386). How much
> RAM and swap does your box have?
Yeah, this is definitely a memory problem. It sounds like the machine
in question was under a significant memory load at the time of death,
which made me think it might be related. I have 64MB of memory and about
100MB of swap, though I am fairly sure it died only halfway or so through
filling up the swap (from the last top update I got).
> The maintainer of GNU grep says that you should have enough virtual
> memory to allocate the longest line possible, and doesn't want to
> change that behaviour...
It makes a great memory system torture test :).