Using the paging mechanism lazy page out (removing the pages that are not in the address area of an active process), Windows NT creates permanently free working memory (see Special Features under Windows NT). Therefore, Transaction ST06 displays a very high value for Physical mem free in comparison to Physical mem avail (see the following graphic). Due to a faulty interpretation, the number of work processes is often increased ("There is still unused working memory available").
Instead of using Transaction ST06, you can also use the menu path:
Tools ® CCMS ® Control/Monitoring ® Performance Menu ® Operating System ® Local ® Activity
Compare the chapter Operating System Monitor: Overview from the CCMS documentation.
A higher Physical mem free-value has no bearing on the memory use of the system (no. 9 in the following graphic). Physical mem free in relation to Physical mem avail is by definition very large (see Windows NT: Paging Mechanism Lazy Page Out).
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