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Spurious interrupts

cto_securelogic
Level 1
Level 1

Hi,

The platform is:

IOS (tm) C3550 Software (C3550-I5Q3L2-M), Version 12.1(12c)EA1

When I enter a show stacks command, I get:

sh stacks

Minimum process stacks:

Free/Size Name

4880/6000 vegas_flash init

5644/6000 SPAN Subsystem

8700/12000 Init

5368/6000 RADIUS INITCONFIG

8180/9000 DHCP Client

8252/12000 Virtual Exec

4976/6000 TFTP Read Process

11076/12000 Exec

Interrupt level stacks:

Level Called Unused/Size Name

4 308627060 8468/9000 CPU NETWORK INTERFACE CHIP

5 1954 8904/9000 Vegas miami tty xmit hack timer

6 1596832587 8932/9000 Clock Timer Vector

Spurious interrupts: 4879667

These numbers, i.e. Spurious interrupts, are large numbers, but I haven't been able to find good documentation at explains these counters and when/if these numbers are performance affecting.

Does anyone have knowledge/experience with these counters?

Thanks

1 Reply 1

Prashanth Krishnappa
Cisco Employee
Cisco Employee

This is normal/cosmetic for a 3550 and does not affect any performance. There was a bug filed but it is closed.

http://www.cisco.com/cgi-bin/bugtool/onebug.pl?bugid=CSCdy10677

Review Cisco Networking for a $25 gift card