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rdisp/vb_factor - Load balancing for Update Servers

rdisp/vb_factor - Load balancing for Update Servers

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| Parameter : rdisp/vb_factor |
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| Short description: Load balancing for update servers |
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| Parameter description : |
| ----------------------- |
| Dispatching of update requests works in accordance with a very |
| simple procedure: |
| - Each application server manages a list of active update servers |
| and the configured update work processes |
| - Each update server with the suitable context is dynamically |
| assigned the update requests generated (refer to parameter |
| %%rdisp/vb_context%% or %%rdisp/vb2_context%% ). |
| - In a dispatching loop, all update processes are assigned exactly |
| one update request. After each assignment, the update server is |
| changed. Therefore within a dispatching loop, a server is |
| assigned as many update requests as update work processes were |
| configured for it. |
| You can use parameter rdisp/vb_factor to influence the relevant |
| number of update work processes for dispatching, for example to |
| assign more update requests to very fast servers. The relevant |
| number for dispatching is the product of the current number of |
| update work processes and the value of rdisp/vb_factor. |
| |
| After the processing of the V1 part of an update request, the V2 |
| part is dispatched in the same way. |
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| Work Area: Update |
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| Unit : Real number > 0 |
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| Default value : 1.0 |
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| Who is permitted to make changes: SAP |
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| Limitations for operating systems: None |
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| Limitations for database systems: None |
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| Other Parameters Affected or Dependent: |
| %%rdisp/vb_dispatching%% %%rdisp/max_vb_server%% |
| %%rdisp/vb_included_server%% %%rdisp/vb_refresh_info%% |
| %%rdisp/vb_context%% %%rdisp/vb2_context%% |
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| Valid Input, Formats, Areas: |
| |
| The parameter value must correspond to the following syntax: |
| |
| rdisp/vb_factor = S=<Instancename>,F=<Factor>; ..
| S=<Instancename>,F=<Factor>;
| |
| Example: |
| rdisp/vb_factor = S=host1_C11_00,F=2.0; S=host2_C11_00, F=2.5; |
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| Short Description : Load balancing for Update Servers
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| Applications Area : Update
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| Parameter Type : S
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| Changes allowed : X
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| Valid for Operating System : *
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| Dynamic switchable :
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| Same on all Servers :
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