For program load I think you want SMF 42 Subtype 6(?). Possibly with the use of an LLA exit. AFAIK, there is no "native" method to determine this information. Several of the 3rd-party products that existed before LLA provide statistical and loadlib information for a specific module "out of the box.
If you really want the actual block id, the only method I am aware of is CCW trace. Check IBM link for details. If you are talking about general IO tuning, the RMF spreadsheet reporter is very good. The is a module you can download from ZOS in the MVS SAMPLIB or try here (watch the wrap): http://www-03.ibm.com/systems/z/os/zos/features/rmf/tools/rmftools.html HTH, <snip> is it possible to determine with SMF-Records (14,41,42,..) if a dataset-block was read from disk, lla (direcotory read), vlf (modules), or PDS/E-caching. We want to optimize our I/O processing. </snip> ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
