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HP 5920 Configuration Manual: Configuring Kernel Thread Starvation Detection

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Step
3.
(Optional.) Set the interval
for identifying a kernel
thread deadloop.
4.
(Optional.) Disable kernel
thread deadloop detection
for a kernel thread.

Configuring kernel thread starvation detection

CAUTION:
Inappropriate configuration of kernel thread starvation detection can cause service problems or system
breakdown. Make sure you understand the impact of this configuration on your network before you do it.
Starvation occurs when a thread is unable to access shared resources.
Kernel thread starvation detection enables the system to detect and report thread starvation. If a thread
is not executed within a specific interval, the system considers that a starvation has occurred, and
generates a starvation message.
Thread starvation does not impact system operation. A starved thread can automatically run when
certain conditions are met.
To configure kernel thread starvation detection:
Step
1.
Enter system view.
2.
Enable kernel thread
starvation detection.
3.
(Optional.) Set the interval
for identifying a kernel
thread starvation.
4.
(Optional.) Disable kernel
thread starvation detection
for a kernel thread.
Displaying and maintaining kernel threads
Execute display commands in any view and reset commands in user view.
Task
Display kernel thread deadloop information.
Display kernel thread deadloop detection
configuration.
Display kernel thread exception information.
Command
monitor kernel deadloop time interval [ slot
slot-number ]
monitor kernel deadloop exclude-thread
tid [ slot slot-number ]
Command
system-view
monitor kernel starvation enable [ slot
slot-number ]
monitor kernel starvation time interval [ slot
slot-number ]
monitor kernel starvation exclude-thread
tid [ slot slot-number ]
Command
display kernel deadloop show-number [ offset ] [ verbose ]
[ slot slot-number ]
display kernel deadloop configuration [ slot slot-number ]
display kernel exception show-number [ offset ] [ verbose ]
[ slot slot-number ]
207
Remarks
The default is 8 seconds.
After enabled, kernel thread
deadloop detection monitors
all kernel threads by default.
Remarks
N/A
By default, the function is
disabled.
The default is 120 seconds.
After enabled, kernel thread
starvation detection monitors
all kernel threads by default.

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