Profile Parameters of Memory Management
Use
Profile parameters enable you to set up your memory management system to get maximum benefit from it. By setting the profile parameters correctly, you can adjust memory management exactly to your resources and requirements.
Certain parameters may restrict individual work processes, and quotas may limit resources used by all work processes, for example, the extended memory. There are also profile parameters that are used for configuring memory management statistics.
The default parameter settings usually ensure the smooth operation of your memory management system. Monitoring the Memory Management System enables you to uncover possible weak spots.
Features
Controlling Memory Management
Memory Management Resources for One Work Process
ztta/roll_extension: Limit for Extended Memory
ztta/roll_extension_dia: EM Limit for Dialog Work Processes
ztta/roll_extension_nondia: EM Limit for Non-Dialog Work Processes
abap/heap_area_dia: Heap Memory Limit for Dialog Work Processes
abap/heap_area_nondia: Heap Memory Limit for Non-Dialog Work Processes
Memory Management Limitations
abap/heap_area_total: Heap Memory Limit
em/initial_size_MB: Extended Memory Pool Size
rdisp/PG_SHM: Size of the Paging Buffer
rdisp/PG_MAXFS: Maximum Size of the SAP Paging File
em/blocksize_KB: Segment Size for the Extended Memory
em/proc_max_size_MB: Maximum amount of PROC memory that can be allocated to all work processes.
Memory Management Statistics
Parameters for Controlling the Release of SAP Memory for the Operating System
es/disclaim_coasting_time_alloc
es/disclaim_coasting_time_free
More information: Release of SAP Memory for the Operating System