Date: Wed, 23 Mar 2005 15:57:27 -0500 From: jason henson <jason@ec.rr.com> To: em1897@aol.com Cc: freebsd-questions@freebsd.org Subject: Re: AMD64 much slower than i386 on FreeBSD 5.4-pre Message-ID: <4241D837.8010603@ec.rr.com> In-Reply-To: <8C6FDE958CAFD0B-90C-29197@mblk-d35.sysops.aol.com> References: <20050323165203.38506.qmail@web90201.mail.scd.yahoo.com> <8C6FDE958CAFD0B-90C-29197@mblk-d35.sysops.aol.com>
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em1897@aol.com wrote: > The answer, Boris, is that the "team" has no idea what > they're doing. Check out some of the threads on > performance testing. They tune little pieces here > and there, and break 10 other things in the process. > Matt Dillon "determined" that 10,000 ints/second > was "optimal". Of course if you're passing 10Kpps > that means you get an interrupt for every > packet. > > They're playing pin the tail on the donkey. > You could understand what he was saying? I wanted to help but was unsure of what he was asking. I also seem to remember that discussion you are referring too. IIRC, 10,000hz for pooling was the setting they ere talking about. But on it would very a little, and with the fxp based card polling hurt a little because the card was already ding its own thing in hardware. So that setting was redundant, it was best to leave it alone. He also seemed to say the network bandwidth was constant, and system load rose with an 64bit system. This right? If he was using GENERIC on a smp system he was only using 1 cpu with out a recompile. There is just so much that could be wrong and he gives no information on his system or settings. Doess he have 2 amd64 pcs with 2 different installs of 5.3, or a single machine that he ran both versions on? The router, is that a third machine that was an amd64 system, or something else? He says i386, but an up to date 5.3 world doesn't support 386 with out a work around. The least commom setting is now 486, but a build for 686 would be better. Did he tell you if he had polling on? So I guess it is a good thing you were able to help him, because I couldn't. Not to mention the flame bait you through out, well, that would be wrong.
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