Jeff Garzik wrote:
> Forwarded without no comment other than it's a good read:
I noticed was where they say: if process forks into A and B, and both A
and B write to the fresh COW pages, then the original page is not
released to the system. It's wasted. That is, not until all the COW
pages in a VM area have been written to (it uses a counter).
Ew.
There's also a bit on page pre-zeroing, and another bit on how it's not
actually implemented.
The do mention pre-faulting and pre-emptive page out. I don't know if
we do pre-faulting but I believe we do pre-emptive page out now.
-- Jamie
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.rutgers.edu
Please read the FAQ at http://www.tux.org/lkml/
This archive was generated by hypermail 2b29 : Sun Jan 23 2000 - 21:00:23 EST