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SubjectRe: why swap at all?
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On Tue, 2004-06-01 at 22:00, Valdis.Kletnieks@vt.edu wrote:
> On Tue, 01 Jun 2004 21:53:32 +0200, FabF said:
>
> > I was thinking about some rule e.g. any process using libX* isn't
> > swapped to disk until OOM ...
>
> Odd.. some of the processes that I'd want kept in memory use libX*,
> but others that also use it are at the top of my list of things to migrate
> out (unlike some, I don't mind if Mozilla or OpenOffice end up out on
> disk after extended inactivity - but if my window manager gets swapped
> out, I get peeved when focus-follows-mouse doesn't and my typing goes
> into the wrong window or some such... ;)
>
> And that rule doesn't even help much - as it will cause at least some X
> servers themselves to get swapped out. Here's the list for my X server
> at the moment, as reported by lsof:
>
> X 13886 root txt REG 254,1 1960870 1966 /usr/X11R6/bin/Xorg
> X 13886 root mem REG 254,5 105700 12388 /lib/ld-2.3.3.so
> X 13886 root mem REG 254,5 50944 12530 /lib/libnss_files-2.3.3.so
> X 13886 root mem REG 254,1 64040 1347 /usr/lib/libz.so.1.2.1.1
> X 13886 root mem REG 254,5 212972 53335 /lib/tls/libm-2.3.3.so
> X 13886 root mem REG 254,5 28008 12513 /lib/libpam.so.0.77
> X 13886 root mem REG 254,5 15008 12471 /lib/libdl-2.3.3.so
> X 13886 root mem REG 254,5 8332 12515 /lib/libpam_misc.so.0.77
> X 13886 root mem REG 254,5 29660 12511 /lib/libgcc_s-3.3.3-20040413.so.1
> X 13886 root mem REG 254,5 1451868 53258 /lib/tls/libc-2.3.3.so
> X 13886 root mem REG 254,1 647652 32015 /usr/X11R6/lib/modules/extensions/libglx.so.1.0.5341
> X 13886 root mem REG 254,1 4954876 8362 /usr/lib/tls/libGLcore.so.1.0.5341
>
> Nope, no libX* here... ;)
>
> It's a lot harder than it looks, which explains why we haven't gotten it right
> yet...
>
Boring....You can't have X root layer swapped to disk as it's often used
! Some quick lsof | grep "libX" gives all frontal applications 'swapping
sensible' .fuser can do 'user resource reverse'.Kernel _can_ 'appl.
resource reverse' as well.

PS: I'm not talking about inactive desktop box.Such box has to be rl 3
and is not meant to be user (geek) relevant :)

FabF


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