Date: Mon, 04 May 2009 20:29:36 -0500 From: Adam Vande More <amvandemore@gmail.com> To: freebsd-questions <freebsd-questions@freebsd.org> Subject: Re: Part II: Running SMP kernel but only one cpu Message-ID: <49FF9680.3020800@gmail.com> In-Reply-To: <5e8ad96d0905041746o67c463e9t1297a0b3103557bf@mail.gmail.com> References: <5e8ad96d0905041746o67c463e9t1297a0b3103557bf@mail.gmail.com>
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Duane wrote: > The bios in this old Micron dual PPro-180 full tower antique only > initializes the second CPU if the machine is cold-booted. A simple > 'reboot' results in a single processor machine regardless of the > kernel that is launched. This fact -- unknown to me before last night > -- was the source of a great deal of lost time! > Good you found a work around. You might try ensuring your running latest avail bios as well. > My 6.4 SMP kernel (now customized) runs just fine, with both cpus > active, *except* for this message streaming constantly up the boot > console. > > (from /var/log/messages:) > > May 4 20:20:33 poobah kernel: interrupt storm detected on "irq15:"; > throttling interrupt source > May 4 20:21:02 poobah last message repeated 42 times > May 4 20:21:03 poobah login: ROOT LOGIN (root) ON ttyv1 > May 4 20:21:03 poobah kernel: interrupt storm detected on "irq15:"; > throttling interrupt source > May 4 20:21:33 poobah last message repeated 30 times > May 4 20:23:33 poobah last message repeated 120 times > May 4 20:33:33 poobah last message repeated 599 times > May 4 20:40:01 poobah last message repeated 387 times > etc etc ad repetitum infinitum > > Question1: Is this something I should go to some lengths to eliminate? > Yes, it's probably something you should eliminate. > Question2: What the heck is it? > A poor explanation is the devices are fighting over an IRQ. Generally, simplest fix is to find what devs are on that IRQ, and manually reassign one dev to a different IRQ. > > Best regards, > >
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