Re: [RFC] Arch option to touch newly allocated pages

From: Pavel Machek (pavel@ucw.cz)
Date: Wed Mar 06 2002 - 17:21:50 EST


Hi!

> > You say 'at once'. Does UML somehow give pages back to the host when they're
> > freed, so the pages that are no longer used by UML can be discarded by the
> > host instead of getting swapped?
>
> Doesn't seem to but it looks like madvise might be enough to make that
> happen. That BTW is an issue for more than UML - it has a bearing on
> running lots of Linux instances on any supervisor/virtualising system
> like S/390

I just imagined hardware which supports freeing memory -- just do not
refresh it any more to conserve power ;-))).

Granted, it would probably only make sense in big chunks, like 2MB or
so... It might make sense for a PDA...
                                                                        Pavel

-- 
(about SSSCA) "I don't say this lightly.  However, I really think that the U.S.
no longer is classifiable as a democracy, but rather as a plutocracy." --hpa
-
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 : Thu Mar 07 2002 - 21:01:01 EST