>should the doc contain a hint that performance would be >improved if the token were doubleword aligned?
I say "no". Individual services are not going to document things that are true everywhere. Not aligning things might work but might perform worse (not necessarily because of the instruction itself, but perhaps because the data might cross cache lines). If there is a functional requirement, then it would be documented. Sometimes, for example, something must be on a doubleword boundary. If there was a big performance difference between two options, that might be discussed. Peter Relson z/OS Core Technology Design ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
