chris.friesen at genband
May 2, 2012, 1:23 PM
Post #1 of 1
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why would irq0 have many many more interrupts than LOC?
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I have an x86_64 2.6.27 kernel running on a Sandy Bridge machine.
/proc/interrupts currently shows 75573114 counts for irq0 on cpu 0 and
no counts on other cpus and between 2973587 and 4185923 counts for "LOC"
spread across all cpus including cpu0.
The following are enabled.
CONFIG_GENERIC_HARDIRQS=y
CONFIG_PREEMPT_SOFTIRQS=y
CONFIG_PREEMPT_HARDIRQS=y
CONFIG_HIGH_RES_TIMERS=y
CONFIG_HZ_1000=y
CONFIG_HZ=1000
It almost seems like it's taking a timer interrupt on cpu0 for every
local timer interrupt on every cpu. Surely that's not design intent?
Any ideas on how to fix this?
Chris
--
Chris Friesen
Software Developer
GENBAND
chris.friesen [at] genband
www.genband.com
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