Technical data

System Dump Analyzer
SHOW PAGE_TABLE
Table SDA–17 (Cont.) Physical Page Information in the SHOW PAGE_TABLE
Display
Category Meaning
LOC Location of the page within the system. One of the following
eight locations:
• ACTIVE
Page is in a working set.
• MDFYLST
Page is in the modified page list.
• FREELST
Page is in the free page list.
• BADLST
Page is in the bad page list.
• RELPEND
Release of the page is pending.
• RDERROR
Page has had an error during an attempted read operation.
• PAGEOUT
Page is being written into a paging file.
• PAGEIN
Page is being brought into memory from a paging file.
STATE Byte that describes the state of the physical page.
TYPE Byte that describes the type of virtual page. The types in this
column are the hexadecimal codes that stand for the page
types that appear in column PAGTYP of this display, described
previously.
REFCOUNT Count of the processes that are referencing this PFN. If the
value of REFCOUNT is nonzero, the page is used in at least one
working set. If the value is zero, the page is not used in any
working set.
BAK Address of the backing store; location on a disk device to which
pages can be written.
SVAPTE Virtual address associated with this page frame. The two
SVAPTEs indicate a valid link between physical and virtual
address space.
FLINK Forward link within PFN database that points to the next
virtual page. This longword also acts as the count of the number
of processes that are sharing this global section.
BLINK Backward link within PFN database. Also acts as an index into
the working set list.
SDA–129