Roy Hewitt wrote:
Last time we discussed this..(check the archives it comes up quite regularly..) I wondered whether the TOD clock Steering Facility (aka instruction PTFF) is only *fully* valid on machines with STP, (I know you can call the query request form of PTFF without STP as I tried on a z890) as this would enable a z/OS NTP client to work.. well for single monoplex etc..
As I understand this instruction, the steering functions are only available to the basic machine. They can't be used in LPAR mode. Since you can't run a modern machine in anything but LPAR mode, these functions are only usable by the LPAR hypervisor code. The STO (Set TOD Offset) function is listed as may be available in LPAR mode, so you might be able to use that to adjust the clock for the LPAR, but if your careless, you might set the clock backwards and have duplicate timestamps. As to whether STP is required to enable these functions, I don't know. -- Richard ---------------------------------------------------------------------- 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
