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Date:      Mon, 21 Aug 2000 10:40:51 -0700 (PDT)
From:      Doug White <dwhite@resnet.uoregon.edu>
To:        Jonathan Defries <jonathan@corpex.com>
Cc:        "Freebsd-Stable@Freebsd. Org" <freebsd-stable@FreeBSD.ORG>
Subject:   Re: Too many open files
Message-ID:  <Pine.BSF.4.21.0008211038070.32326-100000@resnet.uoregon.edu>
In-Reply-To: <NEBBJLAOAKHHJLPLDLPIEENODAAA.jonathan@corpex.com>

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On Mon, 21 Aug 2000, Jonathan Defries wrote:

> Hi all,
> 
> I'm trying to run a caching nameserver on one of my web servers
> and it keeps complaining:
> 
> socket(SOCK_DGRAM): Too many open files

In addition to the login.conf/limits hint, check the sysctl

kern.maxfiles

and

kern.maxfilesperproc

> What's the best thing to do to try and alleviate this? I have
> maxusers set at 256, I've seen mention of a new kernel with a
> couple of extra options, would this be the way to go?

Note that bind opens two listening sockets per configured IP address.  If
you have several aliases on one interface it'll open 2*#IPs and probably
hit the limit.  You probably want to limit named to binding to specific
IPs; see the 'listen-on' option, e.g.

options {
  listen-on { 127.0.0.1; 192.168.1.2; };
};

Doug White                    |  FreeBSD: The Power to Serve
dwhite@resnet.uoregon.edu     |  www.FreeBSD.org



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