>Hadn't thought about that. Would be surprised if IFLs got involved, but I can imagine zAAPs (and zIIPs) might. They are exposed to the MVS scheduler, and so would conceivably suffer the same interprocess locking/spin issues.
I think it's more than lock/spin. What about just making the decision to move it to a zIIP, zAAP, or zOWIE? Especially for short transactions? - -teD I’m an enthusiastic proselytiser of the universal panacea I believe in! ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html