http://www.ibm.com/support/techdocs/atsmastr.nsf/WebIndex/FLASH1 0621
Abstract: Identified problem in TCP/IP on z/OS 1.8 which could lead to degraded performance for remote access to DB2 or other application on z/OS using the TCP network protocol. Problem is that additional acknowledgements (ACKS) were being sent without being piggybacked on data packets as they should have been with NODELAYACK=OFF. PMR 94943,035 opened on issue. Identified workaround: reserve z/OS TCP port on the PORT command in the TCPIP profile and insure NODELAYACK parameter is OFF. Reserving port in TCPIP profile appears to make the default behavior of DELAYACK act as intended -- acknowledgements piggyback on data packets, reducing the number of packets and network latency experienced. Thus performance enhanced. ---------------------------------------------------------------------- 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
