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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