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Date:      Sun, 19 Nov 2000 20:33:27 -0800
From:      Alfred Perlstein <bright@wintelcom.net>
To:        David Miller <dmiller@search.sparks.net>
Cc:        freebsd-hackers@FreeBSD.ORG
Subject:   Re: UDP limits in dns server?
Message-ID:  <20001119203327.S18037@fw.wintelcom.net>
In-Reply-To: <Pine.BSF.4.21.0011192131520.21277-100000@search.sparks.net>; from dmiller@search.sparks.net on Sun, Nov 19, 2000 at 11:22:29PM -0500
References:  <Pine.BSF.4.21.0011192131520.21277-100000@search.sparks.net>

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* David Miller <dmiller@search.sparks.net> [001119 20:30] wrote:
> Hi All:)
> 
> I'm testing a honking reverse resolver system for use in resolving web
> logs.  It's an Abit KT7 system with 1.1 GHz processor and 768 MB of ECC
> ram running 4.1-stable as of about a month ago.
> 
> I'm looking up the IP addresses with up to 1500 or so processes each
> taking a list of addresses and running gethostbyaddr() on them.
> 
> I've increased net.inet.udp.recvspace to 192k.  Is there anything else I
> can do to tune the system?  I'm particularly perplexed that a K6-200
> system I had was cpu bound running named and achieved ~200
> resolves/sec; my spiffy new 1100 MHz K7 is struggling to double it.
> 
> Any suggestions welcome!

Increasing maxusers to something like 512 should help with the network
buffer space and sockets required to achieve your goals.

-- 
-Alfred Perlstein - [bright@wintelcom.net|alfred@freebsd.org]
"I have the heart of a child; I keep it in a jar on my desk."


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