Date: Mon, 30 Nov 2009 21:03:46 +0000 From: "Poul-Henning Kamp" <phk@phk.freebsd.dk> To: John Baldwin <jhb@freebsd.org> Cc: Attilio Rao <attilio@freebsd.org>, arch@freebsd.org, Scott Long <scottl@samsco.org> Subject: Re: sglist(9) Message-ID: <16356.1259615026@critter.freebsd.dk> In-Reply-To: Your message of "Mon, 30 Nov 2009 14:27:23 EST." <200911301427.23166.jhb@freebsd.org>
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In message <200911301427.23166.jhb@freebsd.org>, John Baldwin writes: >On Sunday 29 November 2009 6:27:49 pm Scott Long wrote: >It actually does get used by the nvidia driver, but so far in what I have >done in my jhb_bio branch I have tried several different approaches which >is why the API is as verbose as it is. I would warn equally against rigorous simplification and gratuitous generalization in this, I've tried both approaches in prototypes and neither works out well from an API point of view. The insight that expended CPU cycles are practially unmeasurable in this context should not be forgotten, even in the quest to get ever higher transactions per second numbers. -- 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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