Basic System Problem Analysis - August 2003

28
Memory Management Structures: continued
Some useful memory management macros are:
MM_ACTIVE_IO – lists all active I/O at the time of the dump, this macro probably
won’t work very well on a live system although you can try!
MM_COMPLETE_IO – lists all completed I/O. Often you may want to set a filter on a
specific virtual address, for example ENV FILTER “a.c0000000” because the list can be
quite lengthy.
MM_PAGE_INFO is like VS_PAGE_INFO and lists memory manager specific
information about the virtual address.
MM_GLOBALS formats the data in the memory manager globals KSO 4.
NOTE: The memory management “hashed page directory” uses types prefixed with
“HPDIR” but so do types that define objects in the hierarchical file system directory. If
you see references to UFID’s and names then you’re looking at the directory structures!