From owner-freebsd-questions@FreeBSD.ORG Fri Mar 25 04:29:13 2005 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id DBDD216A4CF for ; Fri, 25 Mar 2005 04:29:12 +0000 (GMT) Received: from web90202.mail.scd.yahoo.com (web90202.mail.scd.yahoo.com [66.218.94.86]) by mx1.FreeBSD.org (Postfix) with SMTP id 9274843D3F for ; Fri, 25 Mar 2005 04:29:12 +0000 (GMT) (envelope-from hardcodeharry@yahoo.com) Received: (qmail 93981 invoked by uid 60001); 25 Mar 2005 04:29:12 -0000 Comment: DomainKeys? See http://antispam.yahoo.com/domainkeys DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=yahoo.com; b=U56ZiYSysa8lnePdawhp6JGfaBbHiPMMeSw9N/c5rolfA3DK2Qd2gRqfuq6fHRi0K3AuIvycplhuHQw1oHPZxm5IeFNPcWB+biLxn3M+AOUY6PQPjF0QCD7IywKCQ2kkpW1zf2t18hBTcqxvZXsPUUp1llOXwHpj+0jBCRzpAbU= ; Message-ID: <20050325042912.93979.qmail@web90202.mail.scd.yahoo.com> Received: from [24.47.116.25] by web90202.mail.scd.yahoo.com via HTTP; Thu, 24 Mar 2005 20:29:12 PST Date: Thu, 24 Mar 2005 20:29:12 -0800 (PST) From: Boris Spirialitious To: em1897@aol.com, questions@freebsd.org In-Reply-To: 6667 MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Subject: Re: AMD64 much slower than i386 on FreeBSD 5.4-pre X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 25 Mar 2005 04:29:13 -0000 I think you may be right. I try Broadcom gigE card with same results. Very slow for amd64 build. With same hardware, very good results with 4.9/i386, not too bad with 5.4-pre/i386, and very, very poor with 5.4-pre/amd64. Boris --- em1897@aol.com wrote: > I think the point of a list is so that someone can > say "oh yes, I had > problems with the > em driver in amd64 also; try card X." But instead > you get a lot of > people with no real > idea trying to explain away the problem, as if there > is no chance that > the amd64 > implementant just plain sucks wind. If someone who > actually has an > amd64 build > could post some usage/load numbers, or someone who > did some testing > with > various hardware, that might be useful. So far what > we have is like a > bunch of > Mothers trying to defend their children without > having any viable > answers or > evidence than amd64 is any good at all. Only a > people who say > nonsensical > things like "my opteron blows away any P4", like a > kid bragging about > his > mustang or something. > > The em driver has a standard hold-off of 8000 > ints/second, so thats not > likely > the problem. Its likely to be the same in both i386 > and amd64, so its a > control. > > >   > So the whole interrupt/process switching mechanism > runs like crap with > the amd64 build? Since I don't have a amd64 system, > and you might hav > access to atleast 1, how about getting a little info > on the irqs? Look > at systat -vmstat or vmstat -i under load? aybe > report it back? I > wonder if the irq rates are changing, or irqs are > taking longer to > service. Either there is a problem. Ofcourse some > hardware info would > be nice, chipset and cpu? Maybe you script vmstat -i > for a log, and use > netperf too?   > I like Nick's followup. I would guese Boris may have > a problem with > proper hardware support. I can't really said it is > bad hardware if > speeds are the same, just high load(right?). Maybe > the driver he is > using is not good for 64bit as it is for 32bit?  >   > I think if Boris studies the thread I like to below > he will be alright. >   > Check this out:  > http://www.atm.tut.fi/list-archive/freebsd-stable/thrd66.html  > http://docs.freebsd.org/cgi/mid.cgi?200502171636.10361.drice  >   > Inparticular:  > http://www.atm.tut.fi/list-archive/freebsd-stable/msg19651.html  > http://www.atm.tut.fi/list-archive/freebsd-stable/msg19679.html  > _______________________________________________  > freebsd-questions@freebsd.org mailing list  > http://lists.freebsd.org/mailman/listinfo/freebsd-questions  > To unsubscribe, send any mail to > "freebsd-questions-unsubscribe@freebsd.org"  > > > > _______________________________________________ > freebsd-questions@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-questions > To unsubscribe, send any mail to > "freebsd-questions-unsubscribe@freebsd.org" > __________________________________ Do you Yahoo!? Make Yahoo! your home page http://www.yahoo.com/r/hs