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Monitor Kernel Deadloop Enable - HP FlexFabric 12500 Series Network Management And Monitoring Command Reference

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monitor kernel deadloop enable

Use monitor kernel deadloop enable to enable kernel thread deadloop detection.
Use undo monitor kernel deadloop enable to disable kernel thread deadloop detection.
Syntax
In standalone mode:
monitor kernel deadloop enable [ slot slot-number ]
undo monitor kernel deadloop enable [ slot slot-number ]
In IRF mode:
monitor kernel deadloop enable [ chassis chassis-number slot slot-number ]
undo monitor kernel deadloop enable [ chassis chassis-number slot slot-number ]
Default
Kernel thread deadloop detection is enabled.
Views
System view
Predefined user roles
network-admin
Parameters
slot slot-number: Specifies an MPU by its slot number. If you do not specify this option, the active MPU is
specified. (In standalone mode.)
chassis chassis-number slot slot-number: Specifies an MPU on an IRF member device. If you do not
specify this option, the global active MPU is specified. (In IRF mode.)
Usage guidelines
Kernel threads share resources in kernel space. If a kernel thread monopolizes the CPU for a long time,
other threads cannot run, resulting in a deadloop.
This command 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 outputs a deadloop message and reboots
to remove the deadloop.
Inappropriate use of this command can cause service problems or system breakdown. Make sure you
understand the impact of this command on your network before you use it.
This command is supported only on the default MDC.
Examples
# Enable kernel thread deadloop detection.
<Sysname> system-view
[Sysname] monitor kernel deadloop enable
Related commands
display kernel deadloop
display kernel deadloop configuration
monitor kernel deadloop exclude-thread
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