Date: Sun, 08 May 2005 19:15:25 +0200 From: "Poul-Henning Kamp" <phk@phk.freebsd.dk> To: Scott Long <scottl@samsco.org> Cc: Eric Anderson <anderson@centtech.com> Subject: Re: Very low disk performance on 5.x Message-ID: <22845.1115572525@critter.freebsd.dk> In-Reply-To: Your message of "Sun, 08 May 2005 07:05:11 MDT." <427E0E87.1040701@samsco.org>
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In message <427E0E87.1040701@samsco.org>, Scott Long writes: >The solution is to re-engineer the way that I/O buffers pass through >the kernel and only assign KVA when needed (for doing software parity >calculations, for example). I've hacked up a prototype to do this and there is no doubt that this is the way we are headed, hopefully sometime in the 7-CURRENT period. -- 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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