I never worked with GTFPARS, and only now vaguely remember it, thanks to your mentioning it.
After CA bought UCCEL in 1987 and redundanted me [1], I lost all contact with FastDASD's goings-on. So I don't know about its functional replacement by Astex which occurred with CA's subsequent acquisition of Legent. "It used to have a pretty good LRU cache modeler built in." Assuming that "it" means FastDASD, then I don't remember the upper limit on the supported cache size. Supporting that function was one of my all-time favorite projects. And thanks for the honorable mention. Bill Fairchild [Most nouns and adjectives can easily be verbed, as in "The operator onlined the volume".] Software Developer Rocket Software 275 Grove Street * Newton, MA 02466-2272 * USA Tel: +1.617.614.4503 * Mobile: +1.508.341.1715 Email: bi...@mainstar.com Web: www.rocketsoftware.com -----Original Message----- From: IBM Mainframe Discussion List [mailto:ibm-m...@bama.ua.edu] On Behalf Of Ron Hawkins Sent: Monday, May 03, 2010 11:21 AM To: IBM-MAIN@bama.ua.edu Subject: Re: How to analyze a volume's access by dataset Bill, Cast your mind back to GTFPARS. This IBM FDP would build seek histograms using IEHLIST VTOC Listings as input to map the extents of the datasets on the volume. CA-ASTEX does some very good IO level analysis. As with FASTDASD, CA-ASTEX intercepts every IO. I think that this replaced FASTDASD after CA bought Legent. It used to have a pretty good LRU cache modeler built in. I wonder if it still works and supports 512GB or more of cache? Ron ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
