Re: try_to_swap_out() deactivating pages w. count > 2

From: Rik van Riel (riel@conectiva.com.br)
Date: Sat Apr 21 2001 - 12:42:13 EDT

  • Next message: Stefan Jaschke: "Re: Problems with Toshiba SD-W2002 DVD-RAM drive (IDE)"

    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);

    > 2. why deactivate pages (lots) with count > 2? PINGpong.

    They're not deactivated, they're removed from this proces' virtual
    memory mapping.

    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 ...

    regards,

    Rik 

    --
Virtual memory is like a game you can't win;
However, without VM there's truly nothing to lose...

    		http://www.surriel.com/
http://www.conectiva.com/	http://distro.conectiva.com.br/

    -
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

    This archive was generated by hypermail 2b29 : Sat Apr 21 2001 - 12:50:12 EDT