From owner-freebsd-questions  Thu May  6  0:20:36 1999
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Date: Thu, 6 May 1999 09:21:41 +0200
From: Sune Stjerneby <sst@hermes.vmunix.dk.eu.org>
To: questions@freebsd.org
Subject: "No buffer space available" - NBUF?
Message-ID: <19990506092141.A20855@hermes.vmunix.dk.eu.org>
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Hi,

I've been getting messages such as;

May  2 12:13:56 hermes login: login on ttyv3 as rvj
** May  2 12:14:53 hermes timed[115]: /usr/src/usr.sbin/timed/timed/master.c 160: sendto 195.192.213.127: No buffer space available
May  2 12:15:00 hermes CRON[66299]: (root) CMD (/usr/libexec/atrun)
** May  2 12:18:53 hermes timed[115]: /usr/src/usr.sbin/timed/timed/master.c 160: sendto 195.192.213.127: No buffer space available
May  2 12:19:31 hermes reboot: rebooted by rvj
May  2 12:19:31 hermes syslogd: exiting on signal 15
May  2 12:23:03 hermes syslogd: restart
May  2 12:23:03 hermes /vmunix: Copyright (c) 1992-1999 FreeBSD Inc.
May  2 12:23:03 hermes /vmunix: Copyright (c) 1982, 1986, 1989, 1991, 1993
[...]

Symptoms are total unreachability of the machine from anywhere but console,
failure of several components, such as sendmail etc. - I recall reading in
the BSD USENET archives of this problem - Am I right in assuming the value
of NBUF needs to be increased or is this handled trough maxusers only?
(which I've tried adjusting from 32 to 128 to 256 and back, same result)

It might be unrelated, but at the same time some 24 Win95 PC's were
dd'ing a 514mb image over the network*1 (total disk recovery), although
from a different host.

// Sune Stjerneby
<s.stjerneby@koege-gym.dk> {Herfoelge, Denmark, EU}
  -- "Go, Go, DECzilla!"
  -- "BSD UNIX: 25 Years on the VAX."


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