Please excuse my indecision. The "refresh rate" referred to was the refresh frequency of the online display, not the sample frequency
HTH, <snip> The "refresh rate" for any ISV monitor may refer to any number of things but it is unlikely to refer to a global sampling interval if we are talking about numbers in multiples of 5 or 10 seconds. I imagine that most monitors sample the various objects within z/OS at out-of-box "sensible" intervals depending on the object concerned and they may (or may not) allow the installation to change these intervals. For example, you would probably want to sample your address spaces more frequently that your DASD volumes or XCF structures. Sampling address spaces at intervals greater than a second or two would probably result in unacceptable increased granularity of the results. I suspect the "refresh rate" in this case is how often the display goes back to the performance data-store and asks for a refresh of the data - this will be independent of the sampling rates of the underlying performance data. </snip> Rob Scott <snip> <snip> Something else comes to mind. I recall measuring these some monitors and seeing CPU consumption affective. The REFRESH RATE may also force some sorting, XMS and other stuff to occur on every 20 seconds. Measure the delta changes on CPU TIME when you adjust the refresh rates. CPU consumption will should down within the address space with longer refresh rates </snip> I once had an anally retentive manager who complained about the CPU consumption of our monitor. In order to appease him We change the refresh rate on the monitor from 5 sec to 30 sec. No observable difference in performance at any level was observed. After the experiment was concluded, we returned the monitor refresh rate to 5 sec. HTH, </snip> ---------------------------------------------------------------------- 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
