Date: Tue, 24 Apr 2001 22:05:55 -0400 (EDT) From: Andrew Gallatin <gallatin@cs.duke.edu> To: John Baldwin <jhb@FreeBSD.ORG> Cc: alpha@FreeBSD.ORG Subject: Re: Preemption on by default Message-ID: <15078.12547.396385.16565@grasshopper.cs.duke.edu> In-Reply-To: <XFMail.010424160604.jhb@FreeBSD.org> References: <XFMail.010424160604.jhb@FreeBSD.org>
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John Baldwin writes: > Does anyone have any objections to removing the PREEMPTION kernel option and > just turning it on by default now for the alpha arch? IIRC, the only machine > that still had problems with preemption was the 4100, and the 4100 here at the > office is happily running a SMP preemptive kernel at the moment. That sounds fine to me. > As far as SMP in general is concerned, I think that the top of the tree should > work somewhat with the exception that accounting might be rather screwed up > (and thus scheduling might be a little wacky, but not unusable). I'm currently > ripping up large portions of the kernel SMP code to make some of it more > machine independent among other things. These changes include changing the way > we handle clock interrupts on SMP systems and will hopefully improve if not fix > the current accounting problems with alpha SMP. Woo-hoo! Nice work, John. Drew To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-alpha" in the body of the message
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