Impact for “Store Into Instruction Stream(SIIS)” Inefficiency

Products

• Endevor

Issue/Introduction

IBM reported as follows.
If the "SIIS" assembler instruction is used in a program on z13 or upper processers, CPU time can increase. 
Reference materials are as follows:
Identifying “Store Into Instruction Stream” (SIIS) Inefficiency by Using CPU MF Counters

Is there any impact for Endevor?

Environment

Release : 18.0 above

Component : Endevor

Resolution

Endevor supports z15/z16 and there have been no reported problems with SIIS and no specific impact to date.