Configuring kernel thread starvation detection
![[CAUTION: ]](images/caution.png) | CAUTION: The system detects whether or not kernel thread starvation occurs after the device is powered up. 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 configure kernel thread starvation detection. | |
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 | Command | Remarks |
|---|---|---|
1. Enter system view. | system-view | N/A |
2. Enable kernel thread starvation detection. | monitor kernel starvation enable [ slot slot-number [ cpu cpu-number ] ] | By default, the function is disabled. |
3. (Optional.) Set the interval for identifying a kernel thread starvation. | monitor kernel starvation time time [ slot slot-number [ cpu cpu-number ] ] | The default is 120 seconds. |
4. (Optional.) Disable kernel thread starvation detection for a kernel thread. | monitor kernel starvation exclude-thread tid [ slot slot-number [ cpu cpu-number ] ] | After enabled, kernel thread starvation detection monitors all kernel threads by default. |