gcc -O2 chameneosredux.c -lpthread 16.41u 296.91s 81.17r # -8%
gc chameneosredux 19.97u 0.00s 19.97r # -8%
+Sep 22, 2009
+
+# 6g inlines sliceslice in most cases.
+
+fasta -n 25000000
+ # probably I/O library inefficiencies
+ gc fasta 10.24u 0.00s 10.25r # -4%
+ gc_B fasta 9.68u 0.01s 9.69r # -3%
+
+reverse-complement < output-of-fasta-25000000
+ # we don't know - memory cache behavior?
+ gc reverse-complement 6.67u 0.69s 7.37r # +1%
+ gc_B reverse-complement 6.00u 0.64s 6.65r # +7%
+
+nbody -n 50000000
+ # math.Sqrt needs to be in assembly; inlining is probably the other 50%
+ # also loop alignment appears to be critical
+ gc nbody 86.27u 0.00s 86.29r # -21%
+ gc_B nbody 104.52u 0.00s 104.54r # +22%
+
+fannkuch 12
+ # bounds checking is half the difference
+ # rest might be registerization
+ gc fannkuch 128.36u 0.00s 128.37r # +4%
+ gc_B fannkuch 89.32u 0.00s 89.34r
+
+regex-dna 100000
+ # regexp code is slow on trivial regexp
+ gc regex-dna 24.82u 0.01s 24.86r # -4%
+ gc_B regex-dna 24.55u 0.01s 24.57r # -6%
+
+spectral-norm 5500
+ # possibly inline evalA
+ gc spectral-norm 24.05u 0.00s 24.07r # -1%
+ gc_B spectral-norm 23.60u 0.00s 23.65r # -1%
+
+k-nucleotide 1000000
+ # string maps are slower than glib string maps
+ gc k-nucleotide 17.84u 0.04s 17.89r # +13% but mysterious variation continues
+ gc_B k-nucleotide 15.56u 0.08s 15.65r # -13% (ditto)
+
+mandelbrot 16000
+ gc mandelbrot 64.08u 0.01s 64.11r # +1%
+ gc_B mandelbrot 64.04u 0.00s 64.05r # +1%
+
+pidigits 10000
+ # bignum is slower than gmp
+ gc pidigits 58.68u 0.02s 58.72r # +5%
+ gc_B pidigits 58.86u 0.05s 58.99r # +5%
+
+# these tests are compared using real time, since they run multiple processors
+# accuracy probably low
+threadring 50000000
+ gc threadring 32.70u 0.02s 32.77r # +13%
+
+chameneos 6000000
+ gc chameneosredux 26.62u 0.00s 26.63r # +13%