Re: large page patch (fwd) (fwd)

From: Linus Torvalds (torvalds@transmeta.com)
Date: Fri Aug 09 2002 - 10:56:09 EST


On Fri, 9 Aug 2002, Daniel Phillips wrote:
>
> This reference describes roughly what I had in mind for active
> defragmentation, which depends on reverse mapping.

Note that even active defrag won't be able to handle the case where you
want have lots of big pages, consituting a large percentage of available
memory.

Not unless you think I am crazy enough to do garbage collection on kernel
data structures (repeat after me: "garbage collection is stupid, slow, bad
for caches, and only for people who cannot count").

Also, I think the jury (ie Andrew) is still out on whether rmap is worth
it.

                Linus

-
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 Aug 15 2002 - 22:00:19 EST