Parameter
rdisp/vb_factor
Short text
Load balancing for Update Servers
Parameter Description
The dispatch of update requests occurs after a very simple procedure:
• Each application server leads a list of active update servers and their configured update work processes.
• Every update server with the relevant content are assigned the update requests dynamically (see parameter rdisp/vb_context or rdisp/vb2_context).
• An update work process is assigned to all update work processes in a disptach cycle. It is switched to the update server after every assignment. This means, within a dispatch cycle a server is assigned as many VB requests as update work processes are assigned for it.
This parameter lets you determine the number of update work processes relevant for dispatching, for example, to assign more VB requests to faster servers. This number is determined by the current number of update processes and the value of rdisp/vb_factor.
After processing the U1 update requests, the U2 part is dispatched.
Application Area
Update
Parameter Unit
Real number > 0
Default Value
1.0
Who is permitted to make changes?
SAP
Operating System Restrictions
None
Database System Restrictions
None
Are 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
Values allowed
The parameter value must have the following syntax:
rdisp/vb_factor = S=[instance Name],F=[factor]; .. S=[instance Name],F=[factor];
Example
rdisp/vb_factor = S=host1_C11_00,F=2.0; S=host2_C11_00, F=2.5;
