🚀 go-pugleaf

In article <Bw2pG2.IAz@mach1.wlu.ca> clangfor@mach1.wlu.ca (Carl Langford s) writes:
>We have a S81 running ptx v1.3. Once in a while, the system becomes quite
>sluggish. sar shows that the system disk (zd0) is 100% busy. The disk
>contains /, /usr and two swap partitions. sar also shows that there is no
>swapping on this system. /tmp is mounted as a separate partition on a 
>different disk.

Nobody is shmallocing huge amounts of shared memory, are they?  I'm not sure if
this fits your problem, as shbrk() is likely to get stuff from elsewhere, and I
know nothing about ptx.  But on Dynix, shared memory may be allocated from
/usr/tmp if it can't get it from $TMPPATH, ./ or ~/ first.  It looks in
/usr/tmp before /tmp, according to shbrk(p).  It wouldn't show up as a file in
the file system, of course, you'd have to go poking around to find it.

Hope it's some help, Simon.
-- 
Simon Marshall, Dept. of Computer Science, University of Hull, Hull HU6 7RX, UK
  "Football isn't about life and death.  It's more important than that." Bill
Email: S.Marshall@Hull.ac.uk    Phone: +44 482 465181    Fax: 466666   Shankley