This topic summarizes all the system trace entries by identifier. Because many trace entries are similar, they are described together. Use Table 1 to locate the format for a particular entry.
For example, in the trace entry shown in Figure 1,
the system trace identifier is SVC. Look up SVC in Table 1 to find where the SVC trace entry format
is described. In this case, the SVC trace entry is described in SVC, SVCE, and SVCR trace entries.
Figure 1. Example: Finding the format for an SVC entry
01 000C 00AFF090 SVC 1 070C2000 00EB19CC 00000000 00000001 00C13340| Identifier (IDENT) | Description | For format, see: |
|---|---|---|
| ACR | Alternate CPU recovery | ACR trace entries |
 AINT |
Adapter interruption |
AINT trace entries |
| ALTR | Alteration of trace option | ALTR trace entries |
| BR | Branch through a BAKR, BALR, BASR, or BASSM instruction | BR trace entries |
| BSG | Branch on subspace group | BSG, PC, PR, PT, PTI, SSAR and SSIR trace entries |
| CALL | External call external interruption | CALL, CLKC, EMS, EXT, I/O, MCH, RST, and SS trace entries |
| CLKC | Clock comparator external interruption | CALL, CLKC, EMS, EXT, I/O, MCH, RST, and SS trace entries |
| CSCH | Clear subchannel operation | CSCH, HSCH, MSCH, RSCH, SSCH, SIGA and XSCH trace entries |
| DSP | Task dispatch | DSP, SRB, SSRB, and WAIT trace entries |
| EMS | Emergency signal external interruption | CALL, CLKC, EMS, EXT, I/O, MCH, RST, and SS trace entries |
| EXT | General external interruption | CALL, CLKC, EMS, EXT, I/O, MCH, RST, and SS trace entries |
| HSCH | Halt subchannel operation | CSCH, HSCH, MSCH, RSCH, SSCH, SIGA and XSCH trace entries |
| I/O | Input/output interruption | CALL, CLKC, EMS, EXT, I/O, MCH, RST, and SS trace entries |
| MCH | Machine check interruption | CALL, CLKC, EMS, EXT, I/O, MCH, RST, and SS trace entries |
| MOBR | Change of addressing mode along with a change of instruction address | MODE and MOBR trace entries |
| MODE | Change of addressing mode | MODE and MOBR trace entries |
| MSCH | Modify subchannel operation | CSCH, HSCH, MSCH, RSCH, SSCH, SIGA and XSCH trace entries |
| PC | Program Call control instruction | BSG, PC, PR, PT, PTI, SSAR and SSIR trace entries |
| PCIL |
PCI load instruction |
PCIL trace entries |
| PCIS |
PCI store instruction |
PCIS trace entries |
| PDMX |
PCIE adapter interruption de-multiplexing
event |
PDMX trace entries |
| PGM | Program interruption | PGM, SPER and SPR2 trace entries |
| PR | Program Return control instruction | BSG, PC, PR, PT, PTI, SSAR and SSIR trace entries |
| PT | Program Transfer control instruction | BSG, PC, PR, PT, PTI, SSAR and SSIR trace entries |
| RCVY | Recovery event | RCVY trace entries |
| RSCH | Resume subchannel operation | CSCH, HSCH, MSCH, RSCH, SSCH, SIGA and XSCH trace entries |
| RST | Restart interruption | CALL, CLKC, EMS, EXT, I/O, MCH, RST, and SS trace entries |
| SIGA | Signal adapter operation | CSCH, HSCH, MSCH, RSCH, SSCH, SIGA and XSCH trace entries |
| SPER | SLIP program event recording | PGM, SPER and SPR2 trace entries |
| SPIN | Starting, middle, or stopping of a system spin. | SPIN trace entries |
| SPR2 | SLIP program event recording, when STDATA is specified | PGM, SPER and SPR2 trace entries |
| SRB | Initial service request block dispatch | DSP, SRB, SSRB, and WAIT trace entries |
| SS | Service signal external interruption | CALL, CLKC, EMS, EXT, I/O, MCH, RST, and SS trace entries |
| SSAR | Set Secondary Address Space Number control instruction | BSG, PC, PR, PT, PTI, SSAR and SSIR trace entries |
| SSCH | Start subchannel operation | CSCH, HSCH, MSCH, RSCH, SSCH, SIGA and XSCH trace entries |
| SSRB | Suspended service request block dispatch | DSP, SRB, SSRB, and WAIT trace entries |
| SSRV | System service entered by a Program Call (PC) instruction or a branch | SSRV trace entries |
| SUSP | Lock suspension | SUSP trace entries |
| SVC | Supervisor call interruption | SVC, SVCE, and SVCR trace entries |
| SVCE | SVC error | SVC, SVCE, and SVCR trace entries |
| SVCR | SVC return | SVC, SVCE, and SVCR trace entries |
| TIME | Timer services | TIME trace entries |
| USRn | User event | USRn trace entries |
| WAIT | Wait task dispatch | DSP, SRB, SSRB, and WAIT trace entries |
| XSCH | Cancel subchannel operation | CSCH, HSCH, MSCH, RSCH, SSCH, SIGA and XSCH trace entries |
| ?EXPL | The SYSTRACE subcommand cannot identify the system trace entry | N/A |