Date: Fri, 19 Oct 2001 17:14:15 -0700 From: David Greenman <dg@root.com> To: Marko Zec <zec@tel.fer.hr> Cc: freebsd-hackers@freebsd.org, freebsd-net@freebsd.org Subject: Re: fxp driver - receive interrupt bundling Message-ID: <20011019171415.B48897@nexus.root.com> In-Reply-To: <3BD0B1D4.CFC32A4D@tel.fer.hr>; from zec@tel.fer.hr on Sat, Oct 20, 2001 at 01:05:56AM %2B0200 References: <3BD0B1D4.CFC32A4D@tel.fer.hr>
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>On http://fly.cc.fer.hr/~zec/index.html you can find a 4.4-RELEASE fxp >driver source, with patches that incorporate receive interrupt bundling >microcode, borrowed from the Intel's Linux e100 driver. > >Bundling interrupts for a couple of received Ethernet frames can >significantly lower interrupt processing overhead, so if you have a >really busy server or router or whatever this code can make a noticeable >difference. On an 1200 MHz Athlon machine, the microcode saves around >10% of CPU utilization, with incoming traffic of 20k pps on a single >interface. > >The code is tested on 82558 rev B0 hardware, I'd be glad to know how it >works on other versions of Intel's fxp cards. > >Pls. send your comments, suggestions etc. to zec@tel.fer.hr > >Have fun! Nifty! -DG David Greenman Co-founder, The FreeBSD Project - http://www.freebsd.org President, TeraSolutions, Inc. - http://www.terasolutions.com Pave the road of life with opportunities. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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