Path: utzoo!utgpu!news-server.csri.toronto.edu!clyde.concordia.ca!uunet!aplcen!uakari.primate.wisc.edu!sdd.hp.com!decwrl!ucbvax!agate!darkstar!rennet.cs.wisc.edu From: mcheng@rennet.cs.wisc.edu (Chin-Long (Michael) Cheng) Newsgroups: comp.os.research Subject: looking for sample "real-life" programs that use large VM space Message-ID: <6189@darkstar.ucsc.edu> Date: 20 Aug 90 22:19:01 GMT Sender: usenet@darkstar.ucsc.edu Organization: U of Wisconsin CS Dept Lines: 22 Approved: comp-os-research@jupiter.ucsc.edu Are you running programs that are potentially slowed down by the virtual memory (VM) policy in your machine? I'm looking for ways to improve VM performance by using policies that differ from global CLOCK. I would appreciate any help with the following: a) Descriptions of programs that you think can run faster if different VM policies (replacement + prefetch + user assisted) were used. b) Sample programs segments that you can give me so that I can study the performance for different policies. (Even if you don't know if there will be improvements.) A textbook example would be Gaussian Elimination when the size of the array is bigger than physical memory. When eliminating the lower diagonal, prefetching the next row while working on the current row can be a big help. I am, however, looking for "real-life" programs. That is, program segments that you use regularly for your work. Thanks in advance. Any discussions welcome. Mike mcheng@rennet.cs.wisc.edu