R211x-HP Flexfabric 11900 Network Management and Monitoring Configuration Guide
189
Task Command
Display memory content starting
from a specified memory block for
a user process.
display process memory heap job job-id address starting-address length
memory-length [ chassis chassis-number slot slot-number ]
Display context information for
process exceptions.
display exception context [ count value ] [ chassis chassis-number slot
slot-number ]
Display the core file directory. display exception filepath [ chassis chassis-number slot slot-number ]
Enable or disable a process to
generate core files for exceptions
and set the maximum number of
core files (which defaults to 1)..
process core { maxcore value | off } { job job-id | name process-name }
[ chassis chassis-number slot slot-number ]
Specify the directory for saving
core files (the default directory is
flash:/core on the active MPU).
exception filepath directory
Clear context information for
process exceptions.
reset exception context [ chassis chassis-number slot slot-number ]
Monitoring kernel threads
Tasks in this section help you quickly identify thread deadloop and starvation problems and their causes.
Configuring kernel thread deadloop detection
CAUTION:
HP recommends the default settin
g
s. Inappropriate confi
g
uration of kernel thread deadloop detection can
cause service problems or system breakdown. Make sure you understand the impact of this confi
g
uration
on your network before you do it.
Kernel threads share resources. If a kernel thread monopolizes the CPU, other threads cannot run,
resulting in a deadloop.
This feature enables the device to detect deadloops. If a thread occupies the CPU for a specific interval,
the device considers that a deadloop has occurred. It generates a deadloop message and reboots to
remove the deadloop.
To configure kernel thread deadloop detection (in standalone mode):
Ste
p
Command
Remarks
1. Enter system view.
system-view N/A
2. Enable kernel thread
deadloop detection.
monitor kernel deadloop enable [ slot
slot-number ]
By default, this function is
disabled.
3. (Optional.) Set the interval
for identifying a kernel
thread deadloop.
monitor kernel deadloop time interval [ slot
slot-number ]
The default is 8 seconds.