Date: Sun, 24 Dec 2006 12:47:13 +0000 Cc: Scott Long <scottl@samsco.org>, src-committers@FreeBSD.org, cvs-src@FreeBSD.org, cvs-all@FreeBSD.org, John Polstra <jdp@polstra.com>, Robert Watson <rwatson@FreeBSD.org> Subject: Re: cvs commit: src/sys/dev/bge if_bge.c Message-ID: <27975.1166964433@critter.freebsd.dk>
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In message <20061224211712.W25632@delplex.bde.org>, Bruce Evans writes: >Be careful with micro-optimizations. I saw a single change (adding >about 1K in unrelated code that is never executed) give a pessimization >of 15% for tx bge (from 360 kpps to 300 kpps). It is still a good idea to also disable caches or also benchmark on a very slow CPU when doing optimizations. -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 phk@FreeBSD.ORG | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence.
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