Parameter: THREAD_DUMP_THRESHOLD_CPU_TIME
Definition
Description and Use
This system parameter defines the maximum quantity of CPU time that a thread can take when executing an incoming request. When this threshold is exceeded, the situation is considered as potentially abnormal, and a thread dump file is generated.
The 0 value is used to disable this triggering condition.
Caution
SAP CC provides nanosecond precision for CPU time computing, but not necessarily nanosecond accuracy. This nanosecond precision relies on the Java Virtual Machine (JVM) that provides the current value of the most precise available system timer, in nanoseconds. Its accuracy varies depending on the operating system and hardware of the machines hosting the SAP CC systems. To avoid generating thread dumps that are not relevant due to this nanosecond accuracy, SAP recommends you to set a threshold that is high enough to generate significant thread dumps.
Syntax and Constraints
Defined Constraints
The SAP CC Core Server system verifies the following constraints:
| Instance Type | Constraint |
|---|---|
| Rater instances |
The parameter must be greater than or equal to
0
.
|
| Guider instances |
The parameter must be greater than or equal to
0
.
|
| Dispatcher instances |
The parameter must be greater than or equal to
0
.
|
Technical Details
For more information, consult this section.
| Name | THREAD_DUMP_THRESHOLD_CPU_TIME
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| Category | Parameter | |||||||||
| Type | Long | |||||||||
| Access (RO/RW) |
RW(+): Dynamic Read / Static and Dynamic Write An immediate change is possible but is temporary. When it is relevant, change the permanent settings used by the SAP CC Core Server system when it restarts. Use the Admin+ user interface to change the runtime values or the permanent values of this system parameter in an instance of the SAP CC Core Server system or in multiple instances. |
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| Groups | ||||||||||
| Instance Types |
This system parameter is available in the following types of instances in a running SAP CC Core Server system:
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| Default Values (Factory Settings) |
The predefined default values are:
You can use a default value to reset the runtime value or the restart value (persistent) in the Admin+ user interface. Note A default value is part of the factory settings of the SAP CC Core Server systems. It differs from the original value set during the installation or after the Customizing activities. In Admin+, you can reset a parameter value to this default value, but it is not recommended:
reset command.
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| Constraints |
The SAP CC system checks the following constraints:
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