Messages in this thread | | | Date | Thu, 21 Oct 2004 13:33:47 +0200 | From | Nico Schottelius <> | Subject | Re: Linux speed on sun4c |
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Did anybody wrote a patch for that?
Nico
David S. Miller [Tue, Jul 03, 2001 at 04:07:16PM -0700]: > > Guenter Millahn writes: > > David, can you publish your idea for a fix? Possibly anybody elese can make > > the patch? > > Currently under Linux when a constext is recycled because a new > context is needed but all are in use, we basically toss all of > the MMU segments that context owned. > > This is bogus because if the contexts are the limited resource > not the MMU segments themselves, we take a lot of false MMU > misses on each context switch for no reason. > > The solution is to link the MMU segment software state structures > into the mm_struct. When an 'mm' reacquires a hw context, if any > MMU segments remain on the mm's list, just pluck them back into > the MMU. > > Later, > David S. Miller > davem@redhat.com > - > 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/ >
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