TRACE CT,nnnnk,COMP=SYSSMS
R X,OPTIONS=(CALL,RRTN,CB,SUSP,EXITA,COMP=(ALL,NOIMF,NOSSF)),END

TRACE CT,nnnnk,COMP=SYSSMS
R X,OPTIONS=(ENTRY,EXIT,EXITA,CB,COMP=(PFS,CDM)),END

Attention: SMS trace buffers are allocated in every initiator running kernel workloads. They are allocated in DREF ELSQA, which can cause a shortage of real pages.

For information about how to set up and use a trace, and for diagnosis information about interpreting a trace, see z/OS DFSMSdfp Diagnosis.