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SubjectRe: new processes very slow on otherwise responsive system (2.1.127 and 128)
On Sun, 15 Nov 1998, Simon Kirby wrote:

> I just tried 2.1.129pre1 + arca-19 (less the lp stuff that got rejected),
> and I was able to replicate this problem with the kernel compiled to UP.
> It just happened 30 seconds ago, actually, and lasted for about 3 minutes.
> During this time, I filled every console I have with current IP values,
> which I will be looking at shortly to see if I can see where the loop is.
>
> BTW...I triggered this with:
>
> find usr -type f -print | tmp/fork-test 2
>
> ("fork-test" posted on linux-kernel not so long ago)
>
> And it started to freeze up shortly after 11800 children.
>
> I will send another email if/when I can figure out what is happening.

Not much luck. It's looping not very tightly through schedule() over and
over again. It seems like some timer-triggered problem as when I add
printk()s, I can't replicate the problem. May be related to why it
doesn't happen with SMP kernels, too.

Hmm. :)

Simon-

| Simon Kirby | Systems Administration |
| mailto:sim@netnation.com | NetNation Communications |
| http://www.netnation.com/ | Tech: (604) 684-6892 |


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