On 2/9/09, Bulat Ziganshin <bulat.zigans...@gmail.com> wrote: > Hello Tim, > > > Monday, February 9, 2009, 11:16:22 PM, you wrote: > > > So is the PPC backend really this bad, or should I be looking for > > something weird with the hardware or configuration on the Mac? > > > check GC times too. one possibility is that GC takes much more time > due to smaller L2 cache >
Hmm, doesn't seem to be happening with this example. On the Mac, I get (running with +RTS -s -RTS): 11.86 MUT time (13.95s elapsed) 0.08s GC time (0.15s elapsed) %GC time 0.6% (1.1% elapsed) and on the PC: 1.07s MUT time (1.34s elapsed) 0.01s GC time (0.02s elapsed) %GC time 1.1% (1.6% elapsed) so GC doesn't seem to explain the large difference in running times. Cheers, Tim -- Tim Chevalier * http://cs.pdx.edu/~tjc * Often in error, never in doubt "Maybe I don't want to meet someone who shares my interests. I hate my interests." -- Ghost World _______________________________________________ Glasgow-haskell-users mailing list Glasgow-haskell-users@haskell.org http://www.haskell.org/mailman/listinfo/glasgow-haskell-users
