On Fri, 2017-01-13 at 15:07 +0100, Pierre Ossman wrote: > I'll answer myself here... > > This seems to be a CPU cache issue. Below this limit I see: > > 4,469,985 cache-misses:u # 0.336 % of all cache > refs > 35,279,259,258 instructions:u # 1.70 insn per cycle > (100.00%) > > Above the limit I get: > > 194,571,782 cache-misses:u # 30.322 % of all cache > refs > 18,084,891,734 instructions:u # 0.73 insn per cycle > > > So no wonder things take a turn for the worse. > > I'll have to think a bit on how to make this more efficient. Ideas are always > welcome.
Seems like a job for non-temporal stores? - ajax _______________________________________________ [email protected]: X.Org development Archives: http://lists.x.org/archives/xorg-devel Info: https://lists.x.org/mailman/listinfo/xorg-devel
