Date: Mon, 12 Feb 2007 09:52:44 -0600 From: Dan Nelson <dnelson@allantgroup.com> To: "B. Estrade" <estrabd+freebsd-smp@gmail.com> Cc: freebsd-smp@freebsd.org Subject: Re: SMP Issue on Intel Core Duo (thinkpad T60) Message-ID: <20070212155244.GA50530@dan.emsphone.com> In-Reply-To: <a7ee76680702112056v9b265f4h760d8d565e5981@mail.gmail.com> References: <a7ee76680702111946q489120f2te2e13f62ca8757@mail.gmail.com> <20070212043137.GQ37689@dan.emsphone.com> <a7ee76680702112056v9b265f4h760d8d565e5981@mail.gmail.com>
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In the last episode (Feb 12), B. Estrade said: > On 2/12/07, Dan Nelson <dnelson@allantgroup.com> wrote: > >In the last episode (Feb 12), B. Estrade said: > >> Greetings, I recently performed a fresh installation on a *new* > >> Thinkpad T60, and I noticed that the boot up was going unusually > >> slow. I grep'd dmesg, and found the following issues regarding the > >> CPUs. Is this indicitive of hardware failure or is there an issue > >> with FreeBSD? I am inclinded to assume the former, but I needed > >> some more eyes. > >[...] > >> That is it - no "CPU #0 Launched!" ... > > > >The messages are being printed by "CPU #0"; of course it's running :) > > Good point. Do you know if there is a delay during boot time for > initialization of CPU #1? I obviously need to do some more indepth > testing and info gathering - are there certain things I should look > at do that might help me diagnose this problem? On my systems, the extra CPUs are started at the very end of all device probes, just before /sbin/init is launched. Nothing during the bootup process needs any CPU though, so that can't be the cause of your slow boot times. You'll need to provide more detail as to what slowness you're seeing. Is it during device probing, or after it? Have you enabled any ports that might do lots of filesystem activity when they're started up (squid for example)? -- Dan Nelson dnelson@allantgroup.com
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