Date: Wed, 29 Jun 2005 19:09:20 -0600 From: Scott Long <scottl@samsco.org> To: rsh.lists@comcast.net Cc: freebsd-current@freebsd.org, Adam K Kirchhoff <adamk@voicenet.com> Subject: Re: Portupgrade, -CURRENT & SMP Message-ID: <42C34640.6040305@samsco.org> In-Reply-To: <42C342F7.9080905@comcast.net> References: <42C098B0.5060004@voicenet.com> <42C119FE.7020809@comcast.net> <42C1381B.9000901@voicenet.com> <42C31D30.3000009@comcast.net> <42C3266A.3000901@voicenet.com> <42C3346B.9010408@samsco.org> <42C342F7.9080905@comcast.net>
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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. Scott
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