2.1.97-VGER killing random processes under heavy load ? signals ?

Cyrille Chepelov (chepelov@rip.ens-cachan.fr)
Sat, 25 Apr 1998 16:29:49 +0200 (MET DST)


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Hi all...

I have some trouble with my SparcIPX... This has been happening to me
for quite a long time (at least since the 2.1.89-VGER snapshot which was
around a month or so ago), but only recently was I able to somewhat
characterise a little.

In short : when the loads goes up a little, (2.5+) some processes are
randomly killed, sometimes. This began to be quite more visible since I
wrote a little keyboard light blinker based on the system load (I was
getting jealous of LCDproc <grin />). This program queues SIGALRM's every
125ms or so, and reads /proc/loadavg every second.
When the load is around 2-3, loadlights gets frequently killed, forcing me
to wrap this daemon-wouldbe into a wrapper shell script (and
simultaneously having a (custom built) "nanny" cron script). Such random
deaths happened in the past, but became quite more obvious on a
signal-intensive program -- may be this could be the reason ?

(base machine is a RH4.2, now using egcs-1.02 and kernel 2.1.9x)

nikopol# cat /proc/cpuinfo > attached-cpuinfo.txt ; \
ldconfig -v > attached-ldconfig.txt

I'm currently setting up a (networkless, so that'll take a few floppy
swaps) similarly-versioned i386 to try to reproduce the problem, but in
the meantime, has anyone any clue of what could be in cause ?

Thanks in advance !

-- Cyrille

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