Date: Mon, 18 Sep 2006 10:30:38 -0300 From: Marcelo Gardini do Amaral <marcelo@registro.br> To: Mike Silbersack <silby@silby.com> Cc: freebsd-net@freebsd.org, "Andrey V. Elsukov" <bu7cher@yandex.ru>, Robert Watson <rwatson@FreeBSD.org>, freebsd-stable@freebsd.org Subject: Re: DNS query performance Message-ID: <20060918133038.GG6701@registro.br> In-Reply-To: <20060915223211.R65248@odysseus.silby.com> References: <E1GIMNJ-0000Dd-QH@cs1.cs.huji.ac.il> <2a41acea0608301145j7bbed961j33ce903a27d8963d@mail.gmail.com> <20060904130827.GE12975@registro.br> <20060911195521.GD63300@registro.br> <20060913182019.R50147@fledge.watson.org> <20060913182457.W50147@fledge.watson.org> <20060914175049.GH49126@registro.br> <450A2A6E.3040408@yandex.ru> <20060915145120.GA93074@registro.br> <20060915223211.R65248@odysseus.silby.com>
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Hello Mike, > Although it sounds silly, could you try recompiling 6.1 and 7.0 with a > non-SMP kernel and see how they perform? That would at least tell us if > it's a general performance problem in 6.x and 7.x, or if SMP is somehow > hurting performance in this case. I have this numbers spread over my e-mails. Just putting they together: OS q/s --- --- FreeBSD 6.1 SMP 14953 FreeBSD 6.1 UP 15516 FreeBSD 7.x SMP 15323 FreeBSD 7.x UP 16200 FreeBSD 4.11 SMP 34977 FreeBSD 4.11 UP 33926 I think is a general problem in 6.x and 7.x. UP kernel is always a little bit better, but I can't see big changes tweaking from SMP to UP. On the other hand, with the same hardware, 4.11 is twice better in performance. -- Att., Marcelo Gardini
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