Date: Sat, 09 Jul 2005 07:24:58 -0600 From: Scott Long <scottl@samsco.org> To: John Baldwin <jhb@FreeBSD.org> Cc: rsh.lists@comcast.net, freebsd-current@FreeBSD.org, Adam K Kirchhoff <adamk@voicenet.com> Subject: Re: Portupgrade, -CURRENT & SMP Message-ID: <42CFD02A.6050204@samsco.org> In-Reply-To: <200507090910.25502.jhb@FreeBSD.org> References: <42C098B0.5060004@voicenet.com> <42C342F7.9080905@comcast.net> <42C34640.6040305@samsco.org> <200507090910.25502.jhb@FreeBSD.org>
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John Baldwin wrote: > On Wednesday 29 June 2005 09:09 pm, Scott Long wrote: > >>Sean wrote: >> >>>Scott Long wrote: >>> >>>>>Which, yes, is quite annoying and, IMHO, is a pretty critical bug >>>>>that needs fixing. It makes SMP on -CURRENT nearly unusable if you >>>>>want to regularly update your ports. >>>>> >>>>>Adam >>>> >>>>Well, you can disable SMP at boot via >>>> >>>>set hw.apic.0.disable=1 >>>> >>>>But yes, it's some sort of a bug and it needs to be fixed. I'll track >>>>the PR. >>>> >>>>Scott >>> >>>Scott, >>> >>>I checked and doing several searches through the sysctl options do not >>>see any such option as you list above, > set hw.apic.0.disable=1 >>> >>>I am running amd64, is this perhaps just an option for i386? >>>I do see a kern.smp.disabled: 0, would this instead be for amd64? >>> >>>Exactly how on boot do I break in to enter this option? >>>Or do I set it, then boot? >>>Then afterwards reset then boot again? >>> >>> Thanks >>> Sean >> >>Sorry, it's >> >>hw.apic.0.disabled=1 >> >>I missed the 'd'. It's not a sysctl, it's a tunable (they share the >>same namespace and often overlap, but not always). kern.smp.disabled >>works too. You'll need to either put these settings into >>/boot/loader.conf, or manually set them in the loader by hitting the >>space bar during the 10 second timeout. 5.x had a nice menu for doing >>this, but it because controversial over silly reasons and was removed. > > > And s/hw/hint/. I think the menu should be brought back though. The folks > who didn't want it had an easy knob to turn it off. > In order to do that I need to completely re-write it so that it does simple scrolling instead of screen addressing, and of course I need to remove the mascot. The first part isn't easy and hence hasn't been high on my priority list. Scott
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