Date: Tue, 5 May 1998 11:06:37 -0500 (EST) From: "John S. Dyson" <dyson@FreeBSD.ORG> To: jasone@canonware.com (Jason Evans) Cc: dyson@FreeBSD.ORG, chat@FreeBSD.ORG Subject: Re: FreeBSD vs NetBSD Message-ID: <199805051606.LAA01854@dyson.iquest.net> In-Reply-To: <Pine.BSF.3.96.980505063829.17580B-100000@mozart.canonware.com> from Jason Evans at "May 5, 98 06:41:14 am"
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Jason Evans said: > On Tue, 5 May 1998, John S. Dyson wrote: > > We have had some interesting features in -current, but haven't been > > enabled due to a lack of NEED right now, including zero copy IN/OUT > > of the kernel (only out is implemented right now, but in is an equivalent > > problem to solve, and will probably reserve that for AIO, due to API issues.) > > This is fairly easy to do with our relatively clean VM code, where object > > sharing and the like are natural capabilities. > > John, do you expect that AIO will make it into 3.0? What are the as yet > unresolved issues with AIO? > > Jason (who really needs to install -current on a machine) > The major issue with AIO is that it won't work on a SMP machine. (Threads in general won't.) I have been working on the re-work of the pmap infrastructure so that it will work. There is also a missing system call (aio_fsync). I am not sure if it is in libc yet. -- John | Never try to teach a pig to sing, dyson@freebsd.org | it just makes you look stupid, jdyson@nc.com | and it irritates the pig. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-chat" in the body of the message
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