[Linux-ia64] Interrupt redirection problem

From: Andreas Schwab <schwab_at_suse.de>
Date: 2001-06-26 01:35:07
This is the output of /proc/interrupts on a Lion that has been up for 9 days:

           CPU0       CPU1       CPU2       CPU3       
 32:       2226         19          0          0   IO-SAPIC-edge  keyboard
 33:          2          2          0          0   IO-SAPIC-edge  ide1
 34:          4          2          0          0   IO-SAPIC-edge  ide0
 36:          0          0          0          0   IO-SAPIC-edge  PS/2 Mouse
 44:       1180        131          2         47   IO-SAPIC-edge  serial
 48:   22811357    1510005      31585     155591  IO-SAPIC-level  eth0
 54:          0          0          0          0  IO-SAPIC-level  usb-uhci
 61:    4485678     808931      11218      97495  IO-SAPIC-level  qla1280
238:          0          0          0          0           SAPIC  perfmon
239:  796793291  796794391  796795076  796794435           SAPIC  timer
254:    8256864   11570234   11685908   11611853           SAPIC  IPI
NMI:          0          0          0          0 
ERR:          0

As you can see, cpu0 is processing the majority of interrupts (91%,
ignoring the SAPIC interrupts).  Why?

Andreas.

-- 
Andreas Schwab                                  "And now for something
SuSE Labs                                        completely different."
Andreas.Schwab@suse.de
SuSE GmbH, Schanzäckerstr. 10, D-90443 Nürnberg
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Received on Mon Jun 25 08:37:41 2001

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