>Paging rates depend on the interval they are measured over. >A page rate of one or two per second measured in a 15 minute RMF interval may >be due to a page rate of 30-60 pages/sec for half a minute within that RMF >interval.
Keyword: MAY >Back before the days of Expanded Storage I established the total page movement rate from One minute Monitor II intervals. Any performance analyst worth their salt should be doing that, on an occasional basis on any important system in their shop. >It's surprising just how much larger the peaks are when you drop down to this >small an interval. YMMV. Most of the time, on properly configured systems (ie: sufficient memory), you should see a steady-state paging rate in the single digit to zero range. If not, and performance is an issue, it's time to buy more memory. With 64-bit, and cheap memory, this is easier to do than it used to be. On all of my loved machines, we ensure that there is sufficient memory to keep the paging low regardless of the interval. Some onlines don't page at all. With sub-0.2 transaction response, any paging is a noticible contributor to any increase. - Too busy driving to stop for gas! ---------------------------------------------------------------------- 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
