On Wed, May 24, 2017 at 7:43 AM, Joseph Reichman <[email protected]> wrote:
> At the risk out sounding stupid why does it first have to be swapped out > > I'll bet that you're envisioning all the pages being physically written out to a local page dataset, then physically read back in. I don't think this is what is really done. It is _logicallly_ swapped out. And then _logically_ swapped back in. Then marked non-SWAPPABLE. During the swap in, the data in physical memory frames may be copied to other, non-preferred, memory frames. Why do it this way? Because it just leverages code that already exists rather than using special purpose code. Less code to write and maintain is a _good_ thing. -- Windows. A funny name for a operating system that doesn't let you see anything. Maranatha! <>< John McKown ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
