Date: Tue, 06 Sep 2005 19:50:21 +0200 From: "Poul-Henning Kamp" <phk@phk.freebsd.dk> To: Scott Long <scottl@samsco.org> Cc: src-committers@FreeBSD.org, Luigi Rizzo <rizzo@icir.org>, Nate Lawson <nate@root.org>, cvs-all@FreeBSD.org, Gleb Smirnoff <glebius@FreeBSD.org>, Robert Watson <rwatson@FreeBSD.org>, cvs-src@FreeBSD.org Subject: Re: cvs commit: src/sys/kern kern_poll.c Message-ID: <66057.1126029021@phk.freebsd.dk> In-Reply-To: Your message of "Tue, 06 Sep 2005 11:16:43 MDT." <431DCEFB.9030005@samsco.org>
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In message <431DCEFB.9030005@samsco.org>, Scott Long writes: >> For the case of storage, you actually have a better model since all >> transactions are initiated from the host (as opposed to packet >> arrivals). This gives an easy metric for a dynamic polling threshold -- >> if you have a deep queue of outstanding requests and one completes, you >> should poll a little more than normal. > >Except for target mode. It could be argued that target mode is really networking rather than storage :-) -- 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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