Date: Wed, 22 Mar 2006 21:41:27 +0100 From: "Poul-Henning Kamp" <phk@phk.freebsd.dk> To: Luigi Rizzo <rizzo@icir.org> Cc: current@freebsd.org Subject: Re: interesting(?) data on network interrupt servicing Message-ID: <11503.1143060087@critter.freebsd.dk> In-Reply-To: Your message of "Wed, 22 Mar 2006 12:29:06 PST." <20060322122906.A41691@xorpc.icir.org>
next in thread | previous in thread | raw e-mail | index | archive | help
In message <20060322122906.A41691@xorpc.icir.org>, Luigi Rizzo writes: > if (thread) > isrc->is_pic->pic_disable_source(isrc, PIC_EOI); > >I have no idea, though, why the other pic_disable_source() >is so expensive. The 4-5k TSC ticks are approx 3us > >Any clues ? ISA bus access. -- 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.
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?11503.1143060087>