Date: Sat, 30 Jun 2001 00:57:49 -0500 From: "Michael C . Wu" <keichii@iteration.net> To: "E.B. Dreger" <eddy+public+spam@noc.everquick.net> Cc: freebsd-smp@freebsd.org, freebsd-hackers@freebsd.org Subject: Re: Quick question: AIO / SMP / process-based threading Message-ID: <20010630005749.A72545@peorth.iteration.net> In-Reply-To: <Pine.LNX.4.20.0106300538250.19544-100000@www.everquick.net>; from eddy%2Bpublic%2Bspam@noc.everquick.net on Sat, Jun 30, 2001 at 05:47:49AM %2B0000 References: <Pine.LNX.4.20.0106300538250.19544-100000@www.everquick.net>
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On Sat, Jun 30, 2001 at 05:47:49AM +0000, E.B. Dreger scribbled: | 1. Is AIO SMP-safe? AIO is not safe, SMP or not. | 2. If not, how could one force coherency? (Read and rewrite locked | a word from each cache line?) Is it worth the effort, or should | one not use AIO across process boundaries? Don't use it. | I'm asking primarily about 4.x, unless anyone has good guesses of | how 5.x will be. ;-) | | I'll also keep an eye out for KSEs... thanks to Terry and others | for alerting me to those. (KSEs really answer most of my recent | questions, but I don't think that I can wait that long, nor do I | have the kernel background to really offer any assistance in the | KSE project...) | KSE won't be available for a long time. -- +-----------------------------------------------------------+ | keichii@iteration.net | keichii@freebsd.org | | http://iteration.net/~keichii | Yes, BSD is a conspiracy. | +-----------------------------------------------------------+ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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