> I doubt that doing something little and then full is faster than doing it > full the first time.... > > If you observed major difference I do suspect that it is because the first > execution triggered a pagein (or a swap or a steal...whatever).
I did a very Q&D test and... J *+10 CLC 0(1,R10),8(R10) EXRL R1,*-6 ...is about 25% faster than... CLC 0(1,R10),8(R10) EXRL R1,*-6 So on a z196 the jump seems to be faster than the compare... Fred! ----------------------------------------------------------------- ATTENTION: The information in this electronic mail message is private and confidential, and only intended for the addressee. Should you receive this message by mistake, you are hereby notified that any disclosure, reproduction, distribution or use of this message is strictly prohibited. Please inform the sender by reply transmission and delete the message without copying or opening it. Messages and attachments are scanned for all viruses known. If this message contains password-protected attachments, the files have NOT been scanned for viruses by the ING mail domain. Always scan attachments before opening them. -----------------------------------------------------------------
