show stacks
CF-892
Cisco IOS Configuration Fundamentals Command Reference
July 2008
show stacks
To monitor the stack usage of processes and interrupt routines, use the show stacks command in EXEC
mode.
show stacks
Syntax Description This command has no arguments or keywords.
Command Modes EXEC
Command History
Usage Guidelines The display from this command includes the reason for the last system reboot. If the system was reloaded
because of a system failure, a saved system stack trace is displayed. This information is of use only to
your technical support representative in analyzing crashes in the field. It is included here in case you
need to read the displayed statistics to an engineer over the phone.
Examples The following is sample output from the show stacks command following a system failure:
Router# show stacks
Minimum process stacks:
Free/Size Name
652/1000 Router Init
726/1000 Init
744/1000 BGP Open
686/1200 Virtual Exec
Interrupt level stacks:
Level Called Free/Size Name
1 0 1000/1000 env-flash
3 738 900/1000 Multiport Communications Interfaces
5 178 970/1000 Console UART
System was restarted by bus error at PC 0xAD1F4, address 0xD0D0D1A
GS Software (GS3), Version 9.1(0.16), BETA TEST SOFTWARE
Compiled Tue 11-Aug-92 13:27 by jthomas
Stack trace from system failure:
FP: 0x29C158, RA: 0xACFD4
FP: 0x29C184, RA: 0xAD20C
FP: 0x29C1B0, RA: 0xACFD4
FP: 0x29C1DC, RA: 0xAD304
FP: 0x29C1F8, RA: 0xAF774
FP: 0x29C214, RA: 0xAF83E
FP: 0x29C228, RA: 0x3E0CA
FP: 0x29C244, RA: 0x3BD3C
Release Modification
10.0 This command was introduced.
12.2(33)SRA This command was integrated into Cisco IOS Release 12.2(33)SRA.
