Messages in this thread | | | Date | Sat, 7 Jul 2001 17:11:49 -0300 (BRST) | From | Rik van Riel <> | Subject | Re: VM in 2.4.7-pre hurts... |
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On Sat, 7 Jul 2001, Linus Torvalds wrote:
> In fact, I do not see any part of the whole path that sets the > page age at all, so we're basically using a completely > uninitialized field here (it's been initialized way back when > the page was allocated, but because it hasn't been part of the > normal aging scheme it has only been aged up, never down, so the > value is pretty much random by the time we actually add it to > the swap cache pool).
Not quite. The more a page has been used, the higher the page->age will be. This means the system has a way to distinguish between anonymous pages which were used once and anonymous pages which are used lots of times.
> Suggested fix:
[snip disabling of page aging for anonymous memory]
> That would certainly help explain why aging doesn't work for some people.
As would your patch ;)
regards,
Rik -- Executive summary of a recent Microsoft press release: "we are concerned about the GNU General Public License (GPL)"
http://www.surriel.com/ http://www.conectiva.com/ http://distro.conectiva.com/
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