Date: Fri, 5 Jan 2001 13:53:15 +0000 From: Michael Wells <mwells@zeus.com> To: freebsd-questions@freebsd.org Subject: Re: SMP kernel overheats Message-ID: <20010105135315.B26145@imap.cam.zeus.co.uk> In-Reply-To: <XFMail.010104112910.jhb@FreeBSD.org>; from jhb@FreeBSD.org on Thu, Jan 04, 2001 at 11:29:10AM -0800 References: <20010104191237.A580@wells.org.uk> <XFMail.010104112910.jhb@FreeBSD.org>
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Hi all, Having applied John's patch I've now got HLT support. Thanks, John, I owe you one. I recognise that the real issue is to sort out the cooling, and thanks for all the (vivid!) examples of why HLT is not the solution. I am looking into that. Thanks for all the advice. Regards Michael On Thu, Jan 04, 2001 at 11:29:10AM -0800, John Baldwin (jhb@FreeBSD.org) wrote: > > On 04-Jan-01 Michael Wells wrote: > > Hi all, > > > > Thanks for the feedback on the 'hot' SMP kernel. Although the machine in > > question has been heavily loaded in the past (as someone pointed out, > > why else have an SMP machine?), I've never seen these processors reach > > 70 celcius before. Under Linux, I would expect them to get to around 50 > > degrees during busy periods, but don't run distributed net clients, etc. > > That would get things a little hotter. I've invested in coolers and feel > > that the machine has adequate, if not exactly excellent cooling. There > > are one or two constraints on this which I cannot control. > > > > With that in mind, is it fair to ask for support of SMP systems to > > change at some point to include the instructions to run the chips > > cooler? I note the comment on temperature stability, but I think my > > mileage is varying. > > Well, I have a patch you can try on -current: > > http://www.FreeBSD.org/~jhb/patches/smp_hlt.patch. > > > Regards > > Michael > > -- > > John Baldwin <jhb@FreeBSD.org> -- http://www.FreeBSD.org/~jhb/ > PGP Key: http://www.baldwin.cx/~john/pgpkey.asc > "Power Users Use the Power to Serve!" - http://www.FreeBSD.org/ > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-questions" in the body of the message To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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