This set of measurements was captured by me on my slightly old noname 2GHz Athlon64 3000+ (in 32-bit mode on a 32-bit kernel). It has 1GB RAM and runs Ubuntu 7.04. The benchmarks were run two days ago (2007-12-19) using ghc 6.9.20071119 in runlevel 1 (single-user mode). I did leave the network cable in, which might have produced some interrupts (not very likely -- 1) why would it run in promiscuous mode and 2) who broadcasts apart from my wired/wireless access point which broadcasts a packet per second?). Still, the quality of the timings proved to be good, with a standard deviation of at most 2.7% of the average run-time. This run includes the hand-tweaked assembly benchmarks (as does the Pentium III run in the previous email). Note how much the assembler tweaks help! -Peter charybdis ghc 6.9.20071119 AMD Athlon(tm) 64 Processor 3000+ 2009.160 MHz TESTKIND=THOROUGH SUFFIX= Time (byte counting) std -------------------- avg dev slack hs/byte-bs----acc: 0.705 7‰ 0.1 ███▋ | hs/byte-bs----foldlx: 1.002 1‰ 0.5 █████▎ | hs/byte-bs----foldrx: 1.112 2‰ 0.1 █████▊ | hs/byte-bsl---acc: 2.595 14‰ 0.1 █████████████▌ | hs/byte-xxxxx-acc-1: 4.436 5‰ 0.0 ███████████████████████▏ | hs/byte-xxxxx-acc-2: 4.473 8‰ 0.0 ███████████████████████▎ | hs/byte-xxxxx-foldl: 4.412 10‰ 0.0 ███████████████████████ | hand/byte-bs----acc-a: 0.639 2‰ 0.2 ███▍ | hand/byte-bs----acc-b: 0.414 2‰ 0.5 ██▏ | hand/byte-bs----acc-c: 0.414 3‰ 0.2 ██▏ | hand/byte-bs----acc-d: 0.415 3‰ 0.2 ██▏ | c/byte-getchar: 2.422 27‰ 0.1 ████████████▋ | c/byte-getchar-u: 0.632 3‰ 0.3 ███▎ | c/byte-4k: 0.094 26‰ 2.2 ▌ | Memory: Peak ------- KB hs/byte-bs----acc: 147752 ███████████████████████████████████████▏ | hs/byte-bs----foldlx: 147748 ███████████████████████████████████████▏ | hs/byte-bs----foldrx: 147744 ███████████████████████████████████████▏ | hs/byte-bsl---acc: 3172 ▉ | hs/byte-xxxxx-acc-1: 1904 ▌ | hs/byte-xxxxx-acc-2: 1904 ▌ | hs/byte-xxxxx-foldl: 1900 ▌ | hand/byte-bs----acc-a: 147764 ███████████████████████████████████████▏ | hand/byte-bs----acc-b: 147764 ███████████████████████████████████████▏ | hand/byte-bs----acc-c: 147760 ███████████████████████████████████████▏ | hand/byte-bs----acc-d: 147760 ███████████████████████████████████████▏ | c/byte-getchar: 440 ▏ | c/byte-getchar-u: 440 ▏ | c/byte-4k: 440 ▏ | Time (space counting) std --------------------- avg dev slack hs/space-bs-c8-acc-1: 1.145 1‰ 0.2 ██████ | hs/space-bs-c8-count: 0.521 1‰ 0.2 ██▊ | hs/space-bs-c8-foldlx-1: 1.221 1‰ 0.1 ██████▍ | hs/space-bs-c8-foldlx-2: 1.219 2‰ 0.2 ██████▍ | hs/space-bs-c8-foldrx: 1.172 2‰ 0.3 ██████▏ | hs/space-bs-c8-lenfil: 1.223 1‰ 0.2 ██████▍ | hs/space-bslc8-acc-1: 3.388 10‰ 0.1 █████████████████▋ | hs/space-bslc8-acc-2: 3.386 5‰ 0.1 █████████████████▋ | hs/space-bslc8-acc-3: 2.832 4‰ 0.1 ██████████████▊ | hs/space-bslc8-chunk-1: 1.094 0‰ 0.3 █████▊ | hs/space-bslc8-chunk-2: 1.094 1‰ 0.3 █████▊ | hs/space-bslc8-chunk-3: 1.087 1‰ 0.3 █████▋ | hs/space-bslc8-chunk-4: 1.099 0‰ 0.3 █████▊ | hs/space-bslc8-count: 0.477 2‰ 0.4 ██▌ | hs/space-bslc8-foldl: 1.458 1‰ 0.3 ███████▋ | hs/space-bslc8-foldlx-1: 1.458 0‰ 0.1 ███████▋ | hs/space-bslc8-foldlx-2: 1.457 1‰ 0.1 ███████▋ | hs/space-bslc8-foldr-1: 1.312 1‰ 0.2 ██████▉ | hs/space-bslc8-foldr-2: 1.315 1‰ 0.2 ██████▉ | hs/space-bslc8-lenfil-1: 1.323 1‰ 0.1 ██████▉ | hs/space-bslc8-lenfil-2: 1.325 1‰ 0.1 ██████▉ | hs/space-bsl---foldlx: 1.391 1‰ 0.1 ███████▎ | hs/space-xxxxx-acc-1: 4.991 1‰ 0.1 ██████████████████████████ | hs/space-xxxxx-acc-2: 4.985 1‰ 0.0 ██████████████████████████ | hs/space-xxxxx-foldl: 5.035 2‰ 0.1 ██████████████████████████▎ | hs/space-xxxxx-lenfil: 7.106 8‰ 0.1 █████████████████████████████████████| hand/space-bs-c8-acc-1-a: 1.177 2‰ 0.3 ██████▏ | hand/space-bs-c8-acc-1-b: 1.104 1‰ 0.2 █████▊ | hand/space-bs-c8-acc-1-c: 1.207 1‰ 0.3 ██████▎ | hand/space-bs-c8-acc-1-d: 1.191 1‰ 0.2 ██████▎ | hand/space-bs-c8-acc-1-e: 0.937 1‰ 0.2 ████▉ | hand/space-bs-c8-acc-1-f: 0.921 1‰ 0.2 ████▊ | hand/space-bs-c8-acc-1-g: 0.927 2‰ 0.4 ████▉ | hand/space-bs-c8-acc-1-h: 0.886 2‰ 0.2 ████▋ | hand/space-bs-c8-acc-1-i: 0.803 3‰ 0.4 ████▏ | hand/space-bs-c8-acc-1-j: 0.706 2‰ 0.1 ███▋ | hand/space-bs-c8-acc-1-k: 0.705 1‰ 0.0 ███▋ | hand/space-bs-c8-acc-1-l: 0.710 2‰ 0.1 ███▊ | hand/space-bs-c8-acc-1-m: 0.642 6‰ 0.3 ███▍ | hand/space-bs-c8-acc-1-n: 0.636 4‰ 0.5 ███▎ | hand/space-bs-c8-acc-1-o: 0.626 2‰ 0.0 ███▎ | hand/space-bs-c8-acc-1-p: 0.565 3‰ 0.4 ███ | hand/space-bs-c8-acc-1-q: 0.418 6‰ 0.7 ██▏ | hand/space-bs-c8-acc-1-r: 0.334 5‰ 0.6 █▊ | hand/space-bs-c8-acc-1-s: 0.335 4‰ 0.9 █▊ | c/space-getchar: 2.465 15‰ 0.1 ████████████▉ | c/space-getchar-u: 0.631 1‰ 0.5 ███▎ | c/space-4k: 0.319 3‰ 0.6 █▋ | c/space-megabuf: 0.515 3‰ 0.4 ██▋ | c/space-getwchar: 3.956 6‰ 0.1 ████████████████████▋ | c/space-getwchar-u: 2.217 1‰ 0.1 ███████████▌ | c/space-32k: 0.303 3‰ 1.0 █▋ | c/space-32k-8: 0.304 2‰ 0.3 █▋ | Memory: Peak ------- KB hs/space-bs-c8-acc-1: 147736 ███████████████████████████████████████▏ | hs/space-bs-c8-count: 147744 ███████████████████████████████████████▏ | hs/space-bs-c8-foldlx-1: 147756 ███████████████████████████████████████▏ | hs/space-bs-c8-foldlx-2: 147752 ███████████████████████████████████████▏ | hs/space-bs-c8-foldrx: 147732 ███████████████████████████████████████▏ | hs/space-bs-c8-lenfil: 147756 ███████████████████████████████████████▏ | hs/space-bslc8-acc-1: 3192 ▉ | hs/space-bslc8-acc-2: 3192 ▉ | hs/space-bslc8-acc-3: 3196 ▉ | hs/space-bslc8-chunk-1: 65192 █████████████████▎ | hs/space-bslc8-chunk-2: 65192 █████████████████▎ | hs/space-bslc8-chunk-3: 75240 ████████████████████ | hs/space-bslc8-chunk-4: 76188 ████████████████████▎ | hs/space-bslc8-count: 79204 █████████████████████ | hs/space-bslc8-foldl: 85868 ██████████████████████▊ | hs/space-bslc8-foldlx-1: 85864 ██████████████████████▊ | hs/space-bslc8-foldlx-2: 85868 ██████████████████████▊ | hs/space-bslc8-foldr-1: 169700 █████████████████████████████████████████████| hs/space-bslc8-foldr-2: 169700 █████████████████████████████████████████████| hs/space-bslc8-lenfil-1: 109404 █████████████████████████████ | hs/space-bslc8-lenfil-2: 109404 █████████████████████████████ | hs/space-bsl---foldlx: 85836 ██████████████████████▊ | hs/space-xxxxx-acc-1: 1904 ▌ | hs/space-xxxxx-acc-2: 1904 ▌ | hs/space-xxxxx-foldl: 1900 ▌ | hs/space-xxxxx-lenfil: 1892 ▌ | hand/space-bs-c8-acc-1-a: 147752 ███████████████████████████████████████▏ | hand/space-bs-c8-acc-1-b: 147752 ███████████████████████████████████████▏ | hand/space-bs-c8-acc-1-c: 147752 ███████████████████████████████████████▏ | hand/space-bs-c8-acc-1-d: 147756 ███████████████████████████████████████▏ | hand/space-bs-c8-acc-1-e: 147752 ███████████████████████████████████████▏ | hand/space-bs-c8-acc-1-f: 147748 ███████████████████████████████████████▏ | hand/space-bs-c8-acc-1-g: 147752 ███████████████████████████████████████▏ | hand/space-bs-c8-acc-1-h: 147748 ███████████████████████████████████████▏ | hand/space-bs-c8-acc-1-i: 147748 ███████████████████████████████████████▏ | hand/space-bs-c8-acc-1-j: 147748 ███████████████████████████████████████▏ | hand/space-bs-c8-acc-1-k: 147752 ███████████████████████████████████████▏ | hand/space-bs-c8-acc-1-l: 147752 ███████████████████████████████████████▏ | hand/space-bs-c8-acc-1-m: 147748 ███████████████████████████████████████▏ | hand/space-bs-c8-acc-1-n: 147752 ███████████████████████████████████████▏ | hand/space-bs-c8-acc-1-o: 147752 ███████████████████████████████████████▏ | hand/space-bs-c8-acc-1-p: 147752 ███████████████████████████████████████▏ | hand/space-bs-c8-acc-1-q: 147748 ███████████████████████████████████████▏ | hand/space-bs-c8-acc-1-r: 147748 ███████████████████████████████████████▏ | hand/space-bs-c8-acc-1-s: 147744 ███████████████████████████████████████▏ | c/space-getchar: 444 ▏ | c/space-getchar-u: 444 ▏ | c/space-4k: 468 ▏ | c/space-megabuf: 146968 ███████████████████████████████████████ | c/space-getwchar: 496 ▏ | c/space-getwchar-u: 500 ▏ | c/space-32k: 496 ▏ | c/space-32k-8: 500 ▏ |