A Tuesday 12 February 2008, Bruce Southey escrigué: > Hi, > > I have a Opteron 248 (2.66GHz) that with gcc 4.1.0 (SUSE10.1?) that > gives C qsort with C style compare: 0.650000 > C qsort with Python style compare: 0.640000 > NumPy newqsort: 0.360000
That's very intersting. In a similar configuration, but using SuSe 10.3 (Enterprise) instead of 10.1, I don't see this factor of almost 2 of difference in performance (in fact, both performances, C qsort and NumPy newqsort, are very similar). This seems to confirm that the GNU glibc crew has fixed the qsort performance very recently (i.e. I hope it is not only a fix in SuSe 10.3 Enterprise), and this is why most of current distros are seeing the poor performance in qsort. Cheers, -- >0,0< Francesc Altet http://www.carabos.com/ V V Cárabos Coop. V. Enjoy Data "-" _______________________________________________ Numpy-discussion mailing list Numpy-discussion@scipy.org http://projects.scipy.org/mailman/listinfo/numpy-discussion
