On Wed, Mar 26, 2014 at 02:34:22PM +0100, Alexander Gordeev wrote: > Hello, > > This series is against 3.14.0-rc7. > > It is amied to further improve 'percpu_ida' tags locality by taking > into account system's CPU topology when stealing tags. That is try > to steal from a CPU which is 'closest' to the stealing one. > > I would not bother to post this, since on several system the change > did not show any improvement, i.e. on such one:
There's is much lower level fruit to be had before doing something like this. https://lkml.org/lkml/2014/1/23/257 https://lkml.org/lkml/2014/1/23/329 https://lkml.org/lkml/2014/1/23/343 https://lkml.org/lkml/2014/1/23/354 I've not had time to revisit/finish them, but you should definitely clean up the percpu_ida stuff and reduce existing contention before going overboard. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
