Date: Tue, 06 Nov 2012 10:27:37 +0000 From: "Poul-Henning Kamp" <phk@phk.freebsd.dk> To: Andre Oppermann <andre@freebsd.org> Cc: Davide Italiano <davide@freebsd.org>, Ryan Stone <rysto32@gmail.com>, Joe Holden <lists@rewt.org.uk>, Luigi Rizzo <rizzo@iet.unipi.it>, FreeBSD Current <current@freebsd.org> Subject: Re: polling's future [was: Re: Dynamic Ticks/HZ] Message-ID: <10806.1352197657@critter.freebsd.dk> In-Reply-To: <5098E526.6070101@freebsd.org> References: <509758B8.1000409@rewt.org.uk> <CACYV=-HwJ1j2-zDtCtuGNKzdFRJhPsZm6vtFXAVyPSabCXvFEQ@mail.gmail.com> <50975F6F.6010907@rewt.org.uk> <CACYV=-Ef5ij7%2BgqDV9oS3xRyD6Yy2mqDyKqqUZZQ-KsWb_3C3A@mail.gmail.com> <5097898C.9080109@rewt.org.uk> <CAFMmRNwR_XxjnRZvxqew77qNnOTGWrRQnhJkg4u2berL8VCVtw@mail.gmail.com> <20121105163654.GA12870@onelab2.iet.unipi.it> <5097E880.8010001@rewt.org.uk> <20121105165748.GA13098@onelab2.iet.unipi.it> <5098E526.6070101@freebsd.org>
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-------- In message <5098E526.6070101@freebsd.org>, Andre Oppermann writes: >Hi Luigi, > >do you agree on polling having outlived its usefulness in the light >of interrupt moderating NIC's and SMP complications/disadvantages? Can I just point out, that what we have is not in fact "device-polling" but only "some-kinds-of-network-interface-polling" ? I think it should go away, and if there still is a relevant usage segment, be replaced by _real_ "device-polling" which is not tied to the network stack. Amongst the sensible uses for that would be high-speed serial interfaces etc. -- 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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