Dimension/Hierarchy processing takes a very long time. In SM50 you see program SAPLRS_GENERAL responsible for much of this time.
Generating a call stack via [SM50 → select the Work Process → Administration → Work Process → Write Call Stack] shows the following at the top of the stack in the corresponding Work Process dev (dev_w<nn>) file:
1: RSSM_SLEEP_DEBUG of program SAPLRS_GENERAL (Function)
2: WAIT_FOR_DEBUG of program CL_RSSH_HIERARCHY_BASE========CP (Method)
In transaction RSADMIN, the Debugging User is set to DEBUGHIER:
SAP NetWeaver AS ABAP
SAP Business Warehouse
DEBUG_USER , KBA , BW-WHM-DBA , Data Basis , SV-PERF , Performance Problems , Problem
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