Cisco 2100 Series Configuration Manual page 734

Monitoring Memory Leaks
Using the controller CLI, follow these steps to monitor the controller for memory leaks.
To enable or disable monitoring for memory errors and leaks, enter this command:
Step 1
config memory monitor errors {enable | disable}
The default value is disabled.
Step 2 If you suspect that a memory leak has occurred, enter this command to configure the controller to
perform an auto-leak analysis between two memory thresholds (in kilobytes):
config memory monitor leaks low_thresh high_thresh
If the free memory is lower than the low_thresh threshold, the system crashes, generating a crash file.
The default value for this parameter is 10000 kilobytes, and you cannot set it below this value.
Set the high_thresh threshold to the current free memory level or higher so that the system enters
auto-leak-analysis mode. After the free memory reaches a level lower than the specified high_thresh
threshold, the process of tracking and freeing memory allocation begins. As a result, the debug memory
events enable command shows all allocations and frees, and the show memory monitor detail
command starts to detect any suspected memory leaks. The default value for this parameter is 30000
kilobytes.
To save your changes, enter this command:
Step 3
save config
Step 4 To view a summary of any discovered memory issues, enter this command:
show memory monitor
Information similar to the following appears:
Memory Leak Monitor Status:
low_threshold(10000), high_threshold(30000), current status(disabled)
-------------------------------------------
Memory Error Monitor Status:
Crash-on-error flag currently set to (disabled)
No memory error detected.
Step 5 To view the details of any memory leaks or corruption, enter this command:
show memory monitor detail
Information similar to the following appears:
Memory error detected. Details:
------------------------------------------------
- Corruption detected at pmalloc entry address:
- Corrupt entry:headerMagic(0xdeadf00d),trailer(0xabcd),poison(0xreadceef),
entrysize(128),bytes(100),thread(Unknown task name, task id = (332096592)),
file(pmalloc.c),line(1736),time(1027)
Previous 1K memory dump from error location.
------------------------------------------------
(179a7ac0): 00000000 00000000 00000000 ceeff00d readf00d 00000080 00000000 00000000
(179a7ae0): 17958b20 00000000 1175608c 00000078 00000000 readceef 179a7afc 00000001
(179a7b00): 00000003 00000006 00000001 00000004 00000001 00000009 00000009 0000020d
(179a7b20): 00000001 00000002 00000002 00000001 00000004 00000000 00000000 5d7b9aba
(179a7b40): cbddf004 192f465e 7791acc8 e5032242 5365788c a1b7cee6 00000000 00000000
(179a7b60): 00000000 00000000 00000000 00000000 00000000 ceeff00d readf00d 00000080
(179a7b80): 00000000 00000000 17958dc0 00000000 1175608c 00000078 00000000 readceef
(179a7ba0): 179a7ba4 00000001 00000003 00000006 00000001 00000004 00000001 00003763
(179a7bc0): 00000002 00000002 00000010 00000001 00000002 00000000 0000001e 00000013
Cisco Wireless LAN Controller Configuration Guide
D-18
Appendix D Troubleshooting
(0x179a7ec0)
OL-17037-01