Date: Thu, 12 May 2005 10:51:47 +0200 From: Ewald Jenisch <a@jenisch.at> To: freebsd-questions@freebsd.org Subject: Tracking down "kern.ipc.maxpipekva exceeded" Message-ID: <20050512085147.GA2114@aurora.oekb.co.at>
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Hi, For some time one of my machines in plaged be becoming completely unresponsive after different amounts of time (several hours up to several days). Symptoms: Machine is PINGable, but no access over the network is possible (neither ssh-login nor http-access). /var/log/messages: May 11 12:11:00 io kernel: kern.ipc.maxpipekva exceeded; see tuning(7) maxproc limit exceeded by uid 0, please see tuning(7) and login.conf(5). (tons of both) and finally May 11 12:42:03 io kernel: maxproc May 11 12:42:03 io kernel: limit exceede May 11 12:42:03 io kernel: d by uid May 11 12:42:03 io kernel: 0, ple May 11 12:42:03 io kernel: se see tun May 11 12:42:03 io kernel: ng(7) and l May 11 12:42:03 io kernel: ogin.conf May 11 12:42:03 io kernel: (5). May 11 12:42:03 io kernel: >From that time on I can't log in any more, not even from the console. When rebooting the box via ctl-alt-del, before shutdown, it fails to sync buffers on shutdown (counts down to 1 and stays there) and finally gives up - requiring an fsck on reboot. Please note that the box does *not* crash completely, nor do I get a kernel panic though. The system is running "5.4-STABLE FreeBSD 5.4-STABLE #0: Sat Apr 16 10:19:26 CEST 2005" but this problem has been there since I first installed 5.3 on the box. So my primary question is: How do I track down the cause of the problem, i.e. which program/process is responsible for "kern.ipc.maxpipekva" to be exceeded? Thanks much in advance for any clue, -ewald
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