Date: Sat, 24 Nov 2007 09:36:05 -0800 From: John B <fu@spamtrench.com> To: freebsd-questions@FreeBSD.ORG Subject: ACPI and interrupt storm--7.0 and 6.2 Message-ID: <69AE14E6-4349-4884-9CE4-2FDD0493DF70@spamtrench.com>
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Hope this is the right place to post this...please correct me if this is not the case. I'm building 7.0 BETA3 (though same problem appears in 6.2-STABLE) on 2- and 4-CPU Xeon boxes. Generic SMP and custom kernel configs build fine and all CPUs launch on reboot. However, I get a lot of interrupts from ACPI. Load only settles down to around 0.4 at complete idle with almost no services running. If I turn off ACPI, obviously the interrupt 'storm' ceases, but then I lose the multiple CPUs. I don't have access to the machine(s) at the moment, but my recollection is around 75000 ACPI interrupts per second (per vmstat -i). Any suggestions? pointers? would be much appreciated. Thanks John
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