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Date:      Thu, 14 May 1998 10:51:37 -0500
From:      Tim Tsai <tim@futuresouth.com>
To:        isp@FreeBSD.ORG
Subject:   Re: how many virtual www server on a 2.2.6 PPro machine ?
Message-ID:  <19980514105137.55535@futuresouth.com>
In-Reply-To: <Pine.BSF.3.91.980514212624.411L-100000@panda.hilink.com.au>; from Daniel O'Callaghan on Thu, May 14, 1998 at 09:26:53PM %2B1000
References:  <199805140705.AAA01835@idiom.com> <Pine.BSF.3.91.980514212624.411L-100000@panda.hilink.com.au>

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> > I've run about 300 on my system.  A PPro 180, 192MB (at the time).
> > 
> > I carefully made sure there were enough file descriptors.  There was
> > one serious problem though: bind 4.9.* could not handle more than
> > about 256 interfaces!   I had to do an emergency upgrade to bind
> > 8.1.1.
> 
> Or don't run BIND on the WWW machine.

  4.9.* works just fine with more than 256 interfaces.  There is a compile
time constant you have to tweak.

  FreeBSD by default has a constant (it's in one of the header files)
that limits to 256 file descriptors.  If you compile bind with a larger
descriptor it works fine.

  Took me a few hours to track that one down in the debugger.  One of
our clients has a lot of scripts that depends on 4.9's config. file syntax
so 8.x wasn't an option at the time.

  Tim

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