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Userexit to write SMF records without switching into TCB mode

We have an ongoing Assembler replacement project and want to get rid of a routine which writes SMF records for statistics data. This routine is called around 60 million times a day from RPC transactions. Every call causes a switch from zIIP to the GP
Alexander Schuster 8 months ago in Natural for z/OS / Natural (NAT) 0 Under development