When is there a CPU or Main Memory Bottleneck?
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->For computers that contain a database, an SAP J2EE Engine, or TREX, only very minor paging rates should occur; that is, they should be dimensioned in such a way that the available main memory corresponds to the configured memory areas.
->For computers that only include ABAP instances, you can tolerate moderate paging rates of up to 20% of the physical main memory per hour.
For instance,Main memory bottleneck, As a rule of thumb, there should be approximately 50% more virtual memory than physical memory.
Causes of Hardware Bottlenecks
->Incorrect load distribution (It is extremely important that the database server has enough resources.)
->CPU load of individual programs (In the operating system monitor (Transaction ST06), select the analysis SNAPSHOT • TOP CPU PROCESSES.)
* You can identify the following processes:
--> dw_<instance>:SAP work process of the ABAP Server on a UNIX operating system. On Windows operating systems, the name is “disp+work.”
-->jstart ... :Server process of SAP Java instance.
-->TREX ... :TREX process. The server type is indicated in the process name, for instance, index server, preprocessor, and so on.
-->icman ... :Process of the Internet Communication Manager (ICM).
-->saposcol ... :Auxiliary program, which collects the data for the operating system monitor
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