I have a Digital Unix 3.0 system that has a kernel that appears
to be growing without bounds. This is a relatively garden variety
mail/web/internet access system, FDDI connected, using all AdvFS.
It is heavily used, with peak periods seeing 150+ simultaneous users.
When booted, the kernel is your basic 30-40 megs. Over time, it keeps
growing. Now, with 11 days of uptime, it is 210 megs. Good thing this
system has 512 megs of memory...
This growth is not uniform. There are a few dips that correspond to
usage, but the overall pattern of is upward. Clearly, this is broken.
Accompanying this growth are wild spikes of load average, where the
load average shoots up to 30,40, or 50, without any apparenty increase
of demand.
I opened a support call with Digital over a month ago. It's been escalated
to engineering. So far, the only response has been to ask if we use
"MACH IPC" directly, and to remind us that, if we did, it's unsupported.
We don't.
Does anyone else see this sort of behavior? Anyone else have a clue
as to what this might be, and what the cure, other than periodic reboots,
might be?
- Saul
--
Saul Tannenbaum, Manager, Academic Systems | "It's still rocket
stannenb_at_emerald.tufts.edu | science" - Vint Cerf
Tufts University Computing and |
Communications Services |
Received on Tue Oct 24 1995 - 17:03:39 NZDT