On Wed, 23 Apr 2003, Benjamin LaHaise wrote:
> Actually, Ingo's rmap style sounds very similar to what I first implemented
> in one of my stabs at rmap. It has a nasty side effect of being worst case
> for cache organisation -- the sister page tends to map to the exact same
> cache line in some processors. Whoops. That said, I think that the rmap
> pte-chains can really stand a bit of optimization by means of discarding a
> couple of bits, as well as merging for adjacent pages, so I don't think
> the overhead is a lost cause yet. And nobody has written the clone() patch
> for bash yet...
I'm not sure the best solution is to try to hack applications doing things
in the way they find best. I suspect that we have to change the kernel so
it handles the requests in a reasonable way.
Of course reasonable way may mean that bash does some things a bit slower,
but given that the whole thing works well in most cases anyway, I think
the kernel handling the situation is preferable.
-- bill davidsen <davidsen@tmr.com> CTO, TMR Associates, Inc Doing interesting things with little computers since 1979.- 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 : Wed Apr 30 2003 - 22:00:18 EST