question about interrupt

From: Bai Ao (aobai@hotmail.com)
Date: Wed Feb 20 2002 - 16:19:37 EST


Hi, I am really a linux kernel newbie here so please forgive me if I ask
naive questions:

We have three linux machine which identical hardware setup.

AMD Athlon(tm) Processor 1G, 1.5G mem
VT82C693A/694 Host bridge
PCI bridge: VT82C598/694x [Apollo MVP3/Pro133x AGP]
SCSI storage controller: Adaptec 7892B
....

when I running redhat7.2's 2.4.9-21, everything is alright. (except kswapd
takeoff lots of cpu time).
/proc/interupt
           CPU0
  0: 17286747 XT-PIC timer
  1: 67209 XT-PIC keyboard
  2: 0 XT-PIC cascade
  3: 1373600 XT-PIC serial
  4: 413973 XT-PIC serial
  5: 29 XT-PIC aic7xxx
  6: 39 XT-PIC floppy
  8: 26939437 XT-PIC rtc
  9: 266529 XT-PIC es1371
10: 15518557 XT-PIC eth0
11: 298020 XT-PIC aic7xxx
12: 1372935 XT-PIC PS/2 Mouse
14: 72784 XT-PIC ide0
NMI: 0
ERR: 0

But if I compile 2.4.17(18) kernels, I will have such thing in dmesg:
spurious 8259A interrupt: IRQ7.
then /proc/interrupt:
           CPU0
  0: 1325588 XT-PIC timer
  1: 6993 XT-PIC keyboard
  2: 0 XT-PIC cascade
  5: 166173 XT-PIC aic7xxx, es1371, usb-uhci, usb-uhci
  8: 1 XT-PIC rtc
10: 371872 XT-PIC eth0
12: 155683 XT-PIC PS/2 Mouse
14: 2 XT-PIC ide0
NMI: 0
LOC: 1325586
ERR: 208
MIS: 0

These machines running 2.4.17(18) series behave wierd recently, like
x-windows crashing or font problem. Do these ERR numbers in /proc/interupt
counts for this? What does these numbers mean and is that a bad thing? Thank
you very much!

_________________________________________________________________
MSN Photos is the easiest way to share and print your photos:
http://photos.msn.com/support/worldwide.aspx

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/



This archive was generated by hypermail 2b29 : Sat Feb 23 2002 - 21:00:27 EST