It is NOT a percentage of capacity, it is a TIME based calculation, as in; not how much CP it is using, but how LONG it has been. I will admit that it is not very clear as to what the calculation is, but my first recommendation is to note in the PMR that it hit this limit and ask Level 2 a new value, they may have a better idea on what to specify, otherwise I would recommend doing it in increments, such as; PRCNTLIM=20, then PRCNTLIM=30, ... The manual says to avoid =99 because then there will be no limit.
>From the MVS Commands manual: PRCNTLIM=p For a PER trap, specifies a software limit for PER processing by indicating a maximum percentage of system time that can be devoted to processing caused by PER interruptions. At least 33.55 seconds must have elapsed since the first PER interruption before a trap will be disabled because of this limit. . . . The value computed to test PRCNTLIM is an approximation. SLIP makes this calculation only when a PER interrupt occurs, so the PRCNTLIM parameter does not cause the trap to be disabled until a PER interrupt occurs. Al Nims Systems Admin/Programmer 3 Information Technology University of Florida (352) 273-1298 -----Original Message----- From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf Of Peter Hunkeler Sent: Tuesday, October 07, 2014 7:32 AM To: [email protected] Subject: Question on PER-SLIP and PRCNTLIM. We had to set an IF SLIP trap with JOBNAME= in support of a PMR. As I didn't specify PRCNTLIM, this was set to 10% by SLIP SET processing. The slip has been disabled due to PRCNTLIM before a dump was taken (DATA= wasn't fulfilled so far). I understand this to mean that the RANGE that is set produced that many PER interrupts, that slip processing was using more than the allowed 10% of "system time" and disabled the slip. What exactly does "x% of system time" mean? Is it a pecentage of the LPAR CP capacity? -- Peter Hunkeler ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
