From owner-freebsd-questions  Thu Sep  3 09:57:03 1998
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Date: Thu, 3 Sep 1998 11:55:40 -0500
From: "Matthew D. Fuller" <fullermd@futuresouth.com>
To: questions@FreeBSD.ORG
Subject: NIS and fault tolerance
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Note that the two words in the subject should NOT go together. ;)

We have a rather large problem with NIS.  Our mail server is a slave NIS
server, and at some random times when there's more than a few sendmail
processes running, it'll dead peg ypserv on CPU.  And then, sometimes
when it does THAT, ypserv will wig out totally, stop handling and
requests, eat 100% CPU time, and refuse to restart after we kill it.
That should not be; I'm watching sendmail in another window, and we're
talking about ~20 sendmail processes, on a Pentium Pro with SCSI drives.
It shouldn't be working half as hard as it is, and certainly shouldn't be
dying on us.  Is this a known problem, or some interaction between
sendmail and ypserv that I'm not aware of?  I have sendmail's resource
limits cranked down way low now, I run the queue manually every so often
(that spawns a lot of processes and kills the machine right quick), and I
have top running constantly in a window on the corner of my screen so I
can kill sendmail when it gets pegged quickly.  But I'd kinda like to
resolve this so I could get some sleep, and not have to worry about our
mail server dying under what is really a pretty small mail load.

Thanks,

*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*
|       FreeBSD; the way computers were meant to be       |
* "The only reason I'm burning my candle at both ends, is *
| that I haven't figured out how to light the middle yet."|
*    fullermd@futuresouth.com      :-}  MAtthew Fuller    *
|      http://keystone.westminster.edu/~fullermd          |
*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*


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