Date: Tue, 06 Sep 2005 12:39:07 -0600 From: Scott Long <scottl@samsco.org> To: Nate Lawson <nate@root.org> Cc: src-committers@FreeBSD.org, Luigi Rizzo <rizzo@icir.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: <431DE24B.2000309@samsco.org> In-Reply-To: <431DD8D2.6020006@root.org> References: <200509051602.j85G2Bpo090258@repoman.freebsd.org> <20050905094341.A23343@xorpc.icir.org> <20050905180050.GB41863@cell.sick.ru> <20050905141451.A27290@xorpc.icir.org> <20050906061828.GQ41863@cell.sick.ru> <20050906012755.B34182@xorpc.icir.org> <20050906112608.N51625@fledge.watson.org> <431DC64E.9010903@root.org> <431DCEFB.9030005@samsco.org> <431DD8D2.6020006@root.org>
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Nate Lawson wrote: > Scott Long wrote: > >> Nate Lawson wrote: >> >>> 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. > > > Never heard of that before. > Take my wife, please! Bada-bum-chink Seriously though, I mention it because it is a very important component for storage applicances, bith in it's ability to work and work well. It's an area where we still have a significanlt lead of Linux. Scott
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