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vmcj/max_inline_sleeps - Max. number of inline sleeps during VMC processing
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| Parameter : vmcj/max_inline_sleeps |
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| Short Descr. : Max. number of inline sleeps during VMC processing |
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| Parameter description : |
| ----------------------- |
| |
| When executing a VMC request, a VM can occassionally be in a |
| situation where it needs to wait for an external event. Examples of |
| this are waiting for a shared garbage collection or for the release |
| of VMs when closing internal sessions. Since a roll-out is usually |
| not possible in this situation, the VM deactivates itself for a |
| short time. A negative consequence of this, however, is that the |
| affected work process also remains occupied during this time. To |
| avoid the possibility of deadlocks in extreme situations, you can |
| restrict this deactivation. These settings differentiate between two |
| situations: |
| a) Deactivation during roll-out |
| b) Other deactivations |
| |
| a) During the VMC roll out, the Java session is saved in the Java VM |
| by a callback. In rare cases, it is not possible to do this |
| immediately (for example, if the system needs to wait for the end of |
| shared garbage collection as a consequence of a memory bottleneck). |
| Within the VMC, the affected VM is deactivated for a short time |
| (sleep) as a consequence of this. To ensure that the roll-out is not |
| indefinitely delayed, however, you can define a maximum number of |
| delays. If this number is reached, the VM is set to the status |
| "PRIVATE" and processing continues with the next request. |
| |
| |
| b) You can limit all other sleeps in the same way. If the specified |
| number is reached, the request must be terminated. |
| |
| Specify the parameter values with the following syntax: |
| vmcj/max_inline_sleeps = [ROLL_OUT=<number1> , ] [NORMAL=<number2>
| |
| Examples: |
| vmcj/max_inline_sleeps = NORMAL=60, ROLL_OUT=10 |
| |
| If you specify -1 as the value, any number of sleeps is permitted. |
| |
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| Application Area : VMC |
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| Unit : Counter |
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| Default Value : NORMAL=120,ROLL_OUT=10 |
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| Who is permitted to make changes: |
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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 : Max. number of inline sleeps during VMC processing
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| Applications Area : VMC
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| Parameter Type : S
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| Changes allowed : W
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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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