Date: Sat, 9 Jul 2005 09:10:23 -0400 From: John Baldwin <jhb@FreeBSD.org> To: freebsd-current@FreeBSD.org Cc: Adam K Kirchhoff <adamk@voicenet.com>, rsh.lists@comcast.net Subject: Re: Portupgrade, -CURRENT & SMP Message-ID: <200507090910.25502.jhb@FreeBSD.org> In-Reply-To: <42C34640.6040305@samsco.org> References: <42C098B0.5060004@voicenet.com> <42C342F7.9080905@comcast.net> <42C34640.6040305@samsco.org>
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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. -- John Baldwin <jhb@FreeBSD.org> <>< http://www.FreeBSD.org/~jhb/ "Power Users Use the Power to Serve" = http://www.FreeBSD.org
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