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Date:      Tue, 7 Oct 1997 21:56:03 -0500 (EST)
From:      Jim Riffle <rif@rif.kconline.com>
To:        freebsd-stable@freebsd.org
Subject:   Trobles with limits
Message-ID:  <Pine.BSF.3.96.971007213538.17462A-100000@rif.kconline.com>

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I recently upgraded a couple of my 2.2-Stable servers to 2.2.5-Beta and
appear to be having troubles with maximum open files/processes.  Sunday
evening is when I cvsuped the source tree and made world.

Both servers I upgraded are having serious problems when a lot of files or
processes are open.  My news server runs innd, which will die shortly
after starting.  This isn't too serious however, because restarting innd
will make that machine happy.  My web server, on the other hand, has big
problems.

Upon startup, everything will start and run okay until there are about 35
httpd processes.  Once that happens, the cgi-bin programs will not work
with errors that it cannot fork, fingerd will not fork (running with -p
and a custom program), and after a while, named will die reporting too
many open files.  This sounds like it is a simple problem of needing to
add CHILD_MAX and OPEN_MAX into my kernel config, however that doesn't
seem to help.  I had both of those set to 128 previously, and set them all
the way to 512 to see if the problem would go away.

I can get everything working and forking by starting everything over
again from the shell, however every few hours during the busy times, the
machine will spratically reboot (behavior I expect is a result of hitting
a limit, which I can't seem to raise).  

I did have a old kernel around which was from about 2 months ago.  I
rebooted to that kernel, and the problem still persisted.  So, it doesn't
appear like the kernel is the problem (This kernel I ran problem free for
months previous to upgrading).

Anyone have any suggestions for me to try?

Thanks,
Jim




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