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SubjectRe: kernel 2.0.30
Under loaded conditions our INN server ran into similar
problems when it ran on 2.0.30. One or more processes, usually
those consuming the most resources, would go into
uninterruptable sleep in __wait_on_page. Once, this happened
to init - very bad. We are now back running 2.0.29 without
any problems.

Exactly what changes were made to the MM between 2.0.29
and 2.0.30? The problem (and solution) may lie there. Now
that I'm thinking about it, I may try to back out changes in
mm/, kernel/ and arch/i386/ with a clean 2.0.30 tomorrow. We
could really use the networking fixes/ enhancements (SYN
cookies come to mind...).

Christoph Lameter wrote:
>
> I am beginning to see a pattern here. Similar things happened on a busy
> ISP box with lots of processes hanging in the D state. Two other boxes
> running 2.0.30 terminate programs with segfaults under high load
> (One of them is the exploder for the .com domain of this list ....)
>
> 2.0.29 seems to do fine on another 2 servers.
>
> On Wed, 30 Apr 1997 thoth@purplefrog.com wrote:
>
> >
> > I'm experiencing wedged processes while using NCP-mounted directories under
> > 2.0.30. 2.0.29-ISS on another machine does not have these problems.
> >
> > root 978 0.0 0.5 900 80 ? D 16:30 0:00 (ls)
> > root 29615 0.0 0.0 900 0 ? SW 11:00 0:00 (ls)
> > root 29732 0.0 0.0 900 0 ? DW 11:10 0:00 (ls)
> > root 29837 0.0 0.0 900 0 ? DW 11:20 0:00 (ls)
> > root 29941 0.0 0.0 900 0 ? DW 11:30 0:00 (ls)
> > root 30046 0.0 0.0 900 0 ? DW 11:40 0:00 (ls)
> > root 30158 0.0 0.0 900 0 ? DW 11:50 0:00 (ls)
> > root 30274 0.0 0.0 900 0 ? DW 12:00 0:00 (ls)
> > root 30388 0.0 0.0 900 0 ? DW 12:10 0:00 (ls)
> > root 30500 0.0 0.0 900 0 ? DW 12:20 0:00 (ls)
> > root 30618 0.0 0.0 900 0 ? DW 12:30 0:00 (ls)
> > root 30727 0.0 0.0 900 0 ? DW 12:40 0:00 (ls)
> > root 30836 0.0 0.0 900 0 ? DW 12:50 0:00 (ls)
> > root 30942 0.0 0.0 900 0 ? DW 13:00 0:00 (ls)
> > root 31058 0.0 0.0 900 0 ? DW 13:10 0:00 (ls)
> > root 31163 0.0 0.0 900 0 ? DW 13:20 0:00 (ls)
> > root 31271 0.0 0.0 900 0 ? DW 13:30 0:00 (ls)
> > root 31381 0.0 0.0 900 0 ? DW 13:40 0:00 (ls)
> > root 31491 0.0 0.0 900 0 ? DW 13:50 0:00 (ls)
> > root 31597 0.0 0.0 900 0 ? DW 14:00 0:00 (ls)
> > root 31716 0.0 0.0 900 0 ? DW 14:10 0:00 (ls)
> > root 31836 0.0 0.0 900 0 ? DW 14:20 0:00 (ls)
> > root 31948 0.0 0.0 900 0 ? DW 14:30 0:00 (ls)
> > root 32082 0.0 0.0 900 0 ? DW 14:40 0:00 (ls)
> > root 32190 0.0 0.0 900 0 ? DW 14:50 0:00 (ls)
> > root 32319 0.0 0.0 900 0 ? DW 15:00 0:00 (ls)
> > root 32451 0.0 0.0 900 0 ? DW 15:10 0:00 (ls)
> > root 32565 0.0 0.0 900 0 ? DW 15:20 0:00 (ls)
> > root 32700 0.0 0.0 900 0 ? DW 15:30 0:00 (ls)

---
Andrew Purtell phone: (617) 272-9700
Network Administrator fax : (617) 272-9300
Intelligent Environments email: apurtell@ieinc.com
Burlington, MA 01803 USA akp@tiac.net
http://www.ieinc.com/

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