DIAGxx (control common storage tracking and GFS trace)
DIAGxx contains statements that control the following functions:
Common service area (CSA), extended CSA (ECSA), system queue area
(SQA), and extended SQA (ESQA) tracking.
GETMAIN/FREEMAIN/STORAGE (GFS) trace.
To obtain GFS trace
data output, GTF must be started for USR F65 records. For more details,
see the GFS trace information in z/OS MVS Diagnosis: Tools and Service Aids.
The behavior of GETMAIN (and STORAGE OBTAIN) for
CSA allocations (both above and below 64 megabytes).
Terminating and restarting an initiator address
space when its available region size has decreased.
Preventing the use of user key CSA/ECSA.
Options to control the behavior of 64 bit storage
services: IARCP64 and IARST64.
Options that control whether some system functions
create system trace entries.
Controlling the behavior of GETMAIN (and STORAGE
OBTAIN) for user-region private area subpools (both above and below
the line).
See the description of the VERBEXIT VSMDATA subcommand in z/OS MVS IPCS Commands
for information about:
How to format the data that the storage tracking function collects
from a dump.
How to identify jobs or address spaces that own CSA, ECSA, SQA,
and ESQA storage.