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Date:      Tue, 25 Sep 2001 13:16:58 -0700
From:      "Kory Hamzeh" <kory@avatar.com>
To:        "Joel Gudknecht" <joel.gudknecht@honeywell.com>, <freebsd-questions@FreeBSD.ORG>
Subject:   RE: /boot/loader.conf vs /etc/sysctl.conf for tuning
Message-ID:  <004501c145ff$07802460$14ce21c7@avatar.com>
In-Reply-To: <sbb099a3.005@jmaci.com>

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I'd go with the first document and add it to /boot/loader.conf.local. This
file usually doesn't exist, so create it. I don't think it hurts setting it
early.

Kory


> -----Original Message-----
> From: owner-freebsd-questions@FreeBSD.ORG
> [mailto:owner-freebsd-questions@FreeBSD.ORG]On Behalf Of Joel Gudknecht
> Sent: Tuesday, September 25, 2001 12:45 PM
> To: freebsd-questions@FreeBSD.ORG
> Subject: /boot/loader.conf vs /etc/sysctl.conf for tuning
>
>
> Question is which of these documents should one follow to
> actually set kern.maxfiles or possibly others for that matter?
>
> From:
>
> http://www.kegel.com/c10k.html#limits.filehandles
>
> "FWIW: You can't actually tune the maximum number of connections
> in FreeBSD trivially, via sysctl.... You have to do it in the
> /boot/loader.conf file.
> The reason for this is that the zalloci() calls for initializing
> the sockets and tcpcb structures zones occurs very early in
> system startup, in order that the zone be both type stable and
> that it be swappable.
> You will also need to set the number of mbufs much higher, since
> you will (on an unmodified kernel) chew up one mbuf per
> connection for tcptempl structures, which are used to implement
> keepalive."
>
> From:
>
> http://www.daemonnews.org/200108/benchmark.html
>
> "sysctl
> A few sysctl variables should be tuned for maximum performance.
> The following lines were added to /etc/sysctl.conf:
> vfs.vmiodirenable=1
> kern.ipc.somaxconn=4096
> kern.maxfiles=65536"


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