SMF Type 8 Record
This table shows the record layout for type 8 SMF records
It's easy to report on SMF 8 data!
Spectrum SMF Writer handles the difficult SMF record parsing for you automatically. You just specify which fields you want to see.
Spectrum SMF Writer also converts the arcane date and time fields and reformats them into an attractive report.
Record length. This field and the next field (total of four bytes) form the RDW (record descriptor word). See “Standard SMF Record Header” on page 13-1 for a detailed description.
Segment descriptor (see record length field).
System indicator: Bit Meaning When Set 0-2 Reserved 3-6 Version indicators* 7 Reserved.*See “Standard SMF Record Header” on page 13-1 for a detailed description.
Record type 08 (X'08').
Time since midnight, in hundredths of a second, when the record was moved into the SMF buffer.
Date when the record was moved into the SMF buffer, in the form 0cyydddF. See “Standard SMF Record Header” on page 13-1 for a detailed description.
System identification (from the SID parameter).
Length of rest of record including this field.
For each device online at IPL, there is a four-byte entry with the following format:
Device identification. Note: Virtual I/O devices are identified by the following: Device Class 0 Unit Type 0 Device Number X'7FFF'It is important to understand the following: Allocation messages for VIO data sets will show VIO ALLOCATED TO ddname. SMF records will show VIO unit addresses as X'7FFF'. The actual in-storage UCB built for VIO will show address X'3FFF'.For example, the messages: v IEF237I X'3FFF' ALLOCATED TO ddname v IEF237I X'7FFF' ALLOCATED TO ddnameindicate that ddname is not allocated to a Virtual I/O device, but is instead allocated to a real device whose unit address is X'3FFF' or X'7FFF' respectively.
Device class and unit type.
The table above is based on the description provided by IBM in its "MVS Systems Management Facilities (SMF)" manual.