On Thu, 5 Feb 2009 22:41:41 -0800 Edward Jaffe <[email protected]> wrote:
:>Binyamin Dissen wrote: :>> I wonder if VSM is smart enough to recognize that a paged out page is all zero :>> and to just mark it as not assigned yet so that a page fault will not require :>> a page in. :>I seriously doubt VSM is the least bit aware of the contents of the :>pages. But perhaps it should be. Or detect a page fault for an unassigned page when a MVCL(E) is being issued and if the entire page is being set to zero just update the registers and let it try again? :> Of course, the application program can use PGSER RELEASE to :>"zero" a page and release any frame/slot it might occupy. No page in (or :>out) required. Like first reference. Great for those that know what they are doing. I coded that in a project where a wrap around LDS log was being used and rarely more than X old records were examined. Did a PGSER after hardening the pages. -- Binyamin Dissen <[email protected]> http://www.dissensoftware.com Director, Dissen Software, Bar & Grill - Israel Should you use the mailblocks package and expect a response from me, you should preauthorize the dissensoftware.com domain. I very rarely bother responding to challenge/response systems, especially those from irresponsible companies. ---------------------------------------------------------------------- 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
