Hi!
> > I understand that more RAM leaves less lowmem. What is unacceptable is
> > that PAE crashes or freezes with OOM: it should gracefully handle the
> > issue. Noting that (for a machine with 4GB or under) PAE fails where the
> > HIGHMEM4G kernel succeeds and survives.
>
> You have found a delta, but you're not really making apples-to-apples
> comparisons. The page tables (a huge consumer of lowmem in your bug
> reports) have much more overhead on a PAE kernel. A process with a
> single page faulted in with PAE will take at least 4 pagetable pages
> (it's 7 in practice for me with sleeps). It's 2 pages minimum (and in
> practice with sleeps) on HIGHMEM4G.
>
> There's probably a bug here. But, it's incredibly unlikely to be seen
> in practice on anything resembling a modern system. The 'sleep' issue
> is easily worked around by upgrading to a 64-bit kernel, or using
Are you saying that HIGHMEM configuration with 4GB ram is not expected
to work?
Pavel
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures)
http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
--
To UNSUBSCRIBE, email to debian-kernel-requ...@lists.debian.org
with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org
Archive: http://lists.debian.org/20130130125151.gb19...@amd.pavel.ucw.cz
