Thanks for the explanation Dan, it makes sense now.
Ged
On 27 /02/ 2013, at 20:51, Dan wrote:
At 8:28 PM +0000 02/27/2013, geraldcornish wrote:
Just looking for clarification about virtual memory.
Mac OS 10.4.11, Pismo with 1GB memory
Right now I have Activity monitor saying VM size is 8.11 GB but
Terminal ls command shows only two 1GB vm swapfiles. Why is there
this discrepancy?
The swap files hold only *dirty* pages. Those are r/w pages that
have been written. When paged out, their contents are saved in the
swap file. Clean pages (r/o, r/w but unused) are simply deleted
when paged out. When needed again, they are re-obtained from their
original source, eg code in an app or framework.
HTH,
- Dan.
--
- Psychoceramic Emeritus; South Jersey, USA, Earth.
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