SUMDUMP output for SVC-Entry SDUMPX

For an SVC entry, the storage captured in a summary dump can contain information that is not available in the remainder of the SVC dump if options such as region, LSQA, nucleus, and LPA were not specified in the dump parameters.

For each address space dumped, a summary dump index record is written with the ASID, plus the jobname and stepname for the last task created in the address space. The SUMDUMP output contains RTM2 work areas for tasks in address spaces that are dumped. Many of the fields in the RTM2WA provide valuable debugging information.

The summary dump data is dumped in the following sequence:
  1. The ASID record is dumped for the address space.
  2. The SUMLIST/SUMLSTA/SUMLSTL/SUMLIST64 ranges and the PSWREGS, parameter list and data ID, data are dumped next. These contain information that is helpful in debugging the problem, and should be examined carefully.
  3. All RTM2 work areas pointed to by all TCBs in this address space are dumped.
  4. An address range table is built containing the following ranges, pointed to by the RTM2WA:
    • 4K before and after the PSW at the time of error (RTM2NXT1)
    • 4K before and after each register at the time of error (RTM2EREG).

    Duplicate storage is eliminated from this address range table to reduce the amount of storage dumped.

Parent topic: Analyzing summary SVC dumps