> I've never understood why a page is put on the available frame queue > without first zeroing it. It's kinda like putting dirty dishs in the > cupboard and washing them when you take them out only if company > complains. It would seem to me, in my humble opinion, easy enough to put > an engine on the chip with the sole responsibility of zeroing the page and > putting it on the queue. My humble opinion.
At the time a frame is made available, it is not known whether its next use will require it to be zeroed or not. If the next use turns out to be for a page-in from aux or from a DIV object, then there is no need to zero it. Also, the residual data in available frames is sometimes useful when doing problem diagnosis using a stand-alone dump. Jim Mulder z/OS System Test IBM Corp. Poughkeepsie, NY ---------------------------------------------------------------------- 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
