Date: Sat, 11 Nov 2006 09:22:31 +0000 (GMT) From: Robert Watson <rwatson@FreeBSD.org> To: Marcelo Gardini do Amaral <marcelo@registro.br> Cc: freebsd-performance@freebsd.org, kreios@gmail.com Subject: Re: DNS Performance Numbers Message-ID: <20061111091844.I63959@fledge.watson.org> In-Reply-To: <20061030192702.GG76994@registro.br> References: <20061030192702.GG76994@registro.br>
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On Mon, 30 Oct 2006, Marcelo Gardini do Amaral wrote: > Dave, could you please describe you test set? > > I've posted some results months ago and they were kind different. > > I have done some tests [1] [2] with bind and queryperf and my result on > FreeBSD 6.1 was very poor if compared with 4.11. > > Besides this, I have had bad results with NSD + 6.1 too and it doesn't use > threads. Because of that I realized that there is something strange with UDP > traffic on 6.1, as it was discussed in the threads below. FYI: In response to feedback from ISC, there are UDP transmit optimizations in FreeBSD 7.x. These have a relatively minor performance impact for single-threaded applications, but in the special case of BIND accessing a single UDP socket from many different threads, it significantly improves performance. I'll look at MFC'ing these to 6.x after 6.2-RELEASE (especially if reminded in a month or so :-). With regard to the possible bge issue -- I would encourage you to test using a 7.x kernel, ideally with all the debugging disabled, and see if there's been any improvement (or regression). There has been a lot of change in these areas, and it would be helpful to know what, if any, impact this has had. Robert N M Watson Computer Laboratory University of Cambridge > > [1] > http://lists.freebsd.org/pipermail/freebsd-stable/2006-September/028247.html > > [2] > http://lists.freebsd.org/pipermail/freebsd-net/2006-September/011767.html > > > -- > Att., > > Marcelo Gardini > > > _______________________________________________ > freebsd-performance@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-performance > To unsubscribe, send any mail to "freebsd-performance-unsubscribe@freebsd.org" >
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