On Mon, 2006-12-04 at 21:32 -0600, Larry Finger wrote: > Andrew Morton wrote: > > On Fri, 24 Nov 2006 17:36:27 +0100 > > "Benoit Boissinot" <[EMAIL PROTECTED]> wrote: > > > >> On 11/24/06, Larry Finger <[EMAIL PROTECTED]> wrote: > >>> Is there the equivalent of 'git bisect' for the -mmX kernels? > >>> > >> http://www.zip.com.au/~akpm/linux/patches/stuff/bisecting-mm-trees.txt > >> > > > > Please take the time to do that. Yours is an interesting report - I'm not > > aware of anything in there which was expected to cause a change of this > > mature. > > > > There are at least two patches in 2.6.19-rc5-mm2 that make my system much > more responsive for > interactive jobs. The one that has the majority of the effect is: > > radix-tree-rcu-lockless-readside.patch > > I have not been able to isolate the second patch, which has the lesser > effect. All I can say is that > it occurred before the above patch in patches/series. This patch was tested > against 2.6.19 and fixed > most of the problem on that version.
Curious... This patch introduces the direct pointer optimisation for single element radix trees and makes the radix tree safe to read in a lock-less manner which is not used -yet-. The only difference that that should have is that the elements are freed using rcu callback instead of directly. /me puzzled how this has a large effect on interactivity. Nick? - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
