On Sat, 21 Apr 2001, Rik van Riel wrote:
> On Sat, 21 Apr 2001, Mike Galbraith wrote:
>
> > 30:04: [pid-4] page:c10599f4 deact:0 cache:0 age:29 count:164 [164? 1]
> > 30:04: [pid-4] page:c10599a8 deact:0 cache:0 age:26 count:164
>
> > 1. what kind of page has 164 references?
>
> mmap(/lib/libc.so, FLAGS);
I figured that out too in the meantime. (14hrs at a stretch makes
more than eyeballs bleary..)
> > 2. why deactivate pages (lots) with count > 2? PINGpong.
>
> They're not deactivated, they're removed from this proces' virtual
> memory mapping.
blush.. yup.
> What I _am_ worried about is the fact that we do this to pages with
> a really high page age. These things are in active use and cannot
> be swapped out any time soon, yet we do claim swap space for it ...
I'll see if it makes any noticable difference tomorrow. Enough
fruitless effort for one day.
:) Am I likely to learn more about how swapcache works when I try
to instantly donate these to page_launder() tomorrow morning?
[4] mm:c2ce9f00 page:c1001060 deact:0 cache:1 buf:0 age:5 cnt:1
[2285] mm:c67ef760 page:c1002b18 deact:0 cache:1 buf:0 age:5 cnt:1
-Mike
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This archive was generated by hypermail 2b29 : Mon Apr 23 2001 - 21:00:40 EST