Date: Tue, 20 Jul 2004 16:54:12 +0100 From: Mark Murray <mark@grondar.org> To: Robert Watson <rwatson@FreeBSD.ORG> Cc: markm@FreeBSD.ORG Subject: Re: I/O or Threading Suffer Message-ID: <200407201554.i6KFsCtW079782@grimreaper.grondar.org> In-Reply-To: Your message of "Tue, 20 Jul 2004 10:21:40 EDT." <Pine.NEB.3.96L.1040720100502.86342G-100000@fledge.watson.org>
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Robert Watson writes: > Mark -- how much > computation is being done here -- would it be worth dropping the Giant > lock during that computation so that the thread can yield without > generating a priority inversion? I'm sure it could. There are some Giant issues related to the UIO stuff that bit me in the bum when I removed the NEEDS_GIANT flag from the device, but I'm reasonably sure that with careful work this can be untangled. M -- Mark Murray iumop ap!sdn w,I idlaH
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