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Re: [Bigsister-general] bigsister performance


On Mon, 2005-10-17 at 09:19 +0200, Rob Verduijn wrote:
> Because bigsister wants to report all these tests she starts working so
> hard that she consumes all the resources on the server grinding it down
> to a halt.
> Only a cold boot of the system can save her.

Hmh, just to make sure I understand correctly: Is this the Big Sister 
server crashing or is it so many alarms going off (each within its own
process ...), that the system crashes when the process table gets full
and/or is out of memory?

As far as I my experience goes, bbd/bsmon won't take a system down,
since they are just single-threaded processes. If they get hit by a
huge number of messages they will just process them as fast as they
can, dropping messages if they are too slow. I don't actually see
how they would hurt your system (unless you've got one of those systems
that stop working under heavy load - seen that with rather old Linux
kernels and/or megaraid RAID controller, for instance).

> I need a sollution for this problem.

Provided that the problem *is* related to a huge number of alarms
going off, what about suppressing them using the "check" argument?

If not, I cannot judge from here what actually happens. Is there any
chance you get more information? Out of memory (well, shouldn't bring
the machine down)? Out of processes (shouldn't stop open shell sessions
from accepting input)? I/O problems (probably a hardware problem, then)?
No hints in syslog?

BTW: What system are we talking about?

Best regards,
Tom
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