Messages in this thread | | | Date | Thu, 24 Apr 2003 16:24:56 -0400 (EDT) | From | Bill Davidsen <> | Subject | Re: 2.5.68-mm2 |
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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.
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