The dump you request through SDUMPX contains a summary dump by
default. A summary dump, part of an SVC dump, is formatted and contains
the storage of certain system data areas. Although the summary dump
is a default, you can explicitly request the system to include one
by coding SDATA=SUMDUMP.
The type of summary dump that MVS™ includes depends on the SDUMPX parameters
you code:
Table 1. SDUMPX Parameters
and the Type of Summary Dump They Produce| If you code: |
The summary dump type is: |
|---|
| BRANCH=YES, SUSPEND=NO |
Disabled |
BRANCH=YES, SUSPEND=YES
or
BRANCH=NO, SUMLSTL=list addr
|
Suspend |
| BRANCH=NO (SUSPEND cannot be specified) |
Enabled |
Descriptions of each type of summary dump follow.
- Disabled Summary Dump
- In a disabled summary dump, MVS captures system data that is subject to
rapid and frequent change. Because the system is disabled, MVS can capture
data from only paged-in or disabled reference (DREF) storage. The
caller can specify the SUMLIST and SUMLSTA parameters on SDUMP or
SDUMPX and the SUMLSTL parameter on SDUMPX to save specific data in
the summary dump.
- Suspend Summary Dump
- In a suspend summary dump, MVS also captures system data that is subject
to rapid and frequent change. However, MVS can capture data from paged-in, DREF, and
pageable storage. The caller can specify the SUMLIST and SUMLSTA parameters
on SDUMP or SDUMPX and the SUMLSTL parameter on SDUMPX to save specific
data in the summary dump.
- Enabled Summary Dump
- The purpose of the enabled summary dump is to group data for
debugging dumps by specifying a particular option on the SDUMP or
SDUMPX macro. If the dump is a scheduled dump, the summary data is
saved for each address space specified.