enque/use_pfclock2 - Use pfclock2 to measure times in enqueue processing

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| Parameter : enque/use_pfclock2                                       |
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| Short Description : Use pfclock2 to measure times in enqueue process |
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| Parameter description :                                              |
| -----------------------                                              |
| Normally, the kernel function pfclock is used to measure the         |
| performance and functionality in enqueue. However, since there are   |
| problems with the function on some platforms, you can alternatively  |
| use the function pfclock2, which is less exact but more robust.      |
|                                                                      |
| The parameter can have the following values:                         |
|   - TRUE, true, ALL, all: Use pfclock2 for all measurements          |
|   - LOCK, lock: Use pfclock2 only for measurement of lock operations |
|                 (pfclock is very prone to errors here)               |
|   - FALSE, false: Use pfclock (default setting)                      |
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| Application area: Enqueue                                            |
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| Unit : Special character string                                      |
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| Default value: FALSE                                                 |
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| Who is permitted to make changes: The customer                       |
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| Limitations for operating systems:                                   |
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| Limitations for database systems:                                    |
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| Other Parameters Affected or Dependent:                              |
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| Valid Input, Formats, Areas:                                         |
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| Short Description : Use pfclock2 to measure times in enqueue processing 
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| Applications Area : Enqueue 
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| Parameter Type : B 
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| Changes allowed : X 
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| Valid for Operating System : * 
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| Dynamic switchable : X 
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| Same on all Servers :  
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