This set of measurements was captured by me on my old Compaq Armada E500 from around the year 2000. It has an Intel Coppermine Pentium III running at 600 MHz with 384 MB RAM and running Ubuntu 7.10. The benchmarks were run today (2007-12-21) using ghc 6.9.20071119 (freshly downloaded and reinstalled) in runlevel 1 (single-user mode). I did leave the wireless card in, which might have produced some interrupts. Still, the quality of the timings proved to be good, with a standard deviation of at most 1.2% of the average run-time. This run includes the hand-tweaked assembly benchmarks (as does the Athlon64 run in the next email). Note how much less the assembler tweaks help here (until one gets down to the wicked MMX tweaks) compared to the situation on the Athlon64 in the next mail. They still help, though. -Peter ls-search ghc 6.9.20071119 Pentium III (Coppermine) 596.932 MHz TESTKIND=THOROUGH SUFFIX= Time (byte counting) std -------------------- avg dev slack hs/byte-bs----acc: 3.274 1‰ 0.1 ███ | hs/byte-bs----foldlx: 4.027 0‰ 0.0 ███▋ | hs/byte-bs----foldrx: 4.184 1‰ 0.0 ███▉ | hs/byte-bsl---acc: 28.005 10‰ 0.0 █████████████████████████▋ | hs/byte-xxxxx-acc-1: 25.852 4‰ 0.0 ███████████████████████▋ | hs/byte-xxxxx-acc-2: 25.622 5‰ 0.0 ███████████████████████▌ | hs/byte-xxxxx-foldl: 25.803 5‰ 0.0 ███████████████████████▋ | hand/byte-bs----acc-a: 3.511 1‰ 0.0 ███▎ | hand/byte-bs----acc-b: 1.998 2‰ 0.1 █▉ | hand/byte-bs----acc-c: 1.876 2‰ 0.1 █▊ | hand/byte-bs----acc-d: 1.876 1‰ 0.1 █▊ | c/byte-getchar: 13.016 0‰ 0.0 ███████████▉ | c/byte-getchar-u: 1.662 1‰ 0.1 █▌ | c/byte-4k: 0.543 2‰ 0.2 ▌ | Memory: Peak ------- KB hs/byte-bs----acc: 147752 ███████████████████████████████████████▏ | hs/byte-bs----foldlx: 147756 ███████████████████████████████████████▏ | hs/byte-bs----foldrx: 147760 ███████████████████████████████████████▏ | hs/byte-bsl---acc: 3180 ▉ | hs/byte-xxxxx-acc-1: 1916 ▌ | hs/byte-xxxxx-acc-2: 1912 ▌ | hs/byte-xxxxx-foldl: 1912 ▌ | hand/byte-bs----acc-a: 147772 ███████████████████████████████████████▏ | hand/byte-bs----acc-b: 147776 ███████████████████████████████████████▏ | hand/byte-bs----acc-c: 147772 ███████████████████████████████████████▏ | hand/byte-bs----acc-d: 147776 ███████████████████████████████████████▏ | c/byte-getchar: 436 ▏ | c/byte-getchar-u: 432 ▏ | c/byte-4k: 436 ▏ | Time (space counting) std --------------------- avg dev slack hs/space-bs-c8-acc-1: 4.318 1‰ 0.0 ████ | hs/space-bs-c8-count: 3.118 1‰ 0.1 ██▉ | hs/space-bs-c8-foldlx-1: 4.631 1‰ 0.0 ████▎ | hs/space-bs-c8-foldlx-2: 4.632 1‰ 0.0 ████▎ | hs/space-bs-c8-foldrx: 4.678 0‰ 0.0 ████▎ | hs/space-bs-c8-lenfil: 4.634 1‰ 0.1 ████▎ | hs/space-bslc8-acc-1: 32.733 7‰ 0.0 ██████████████████████████████ | hs/space-bslc8-acc-2: 33.112 11‰ 0.0 ██████████████████████████████▎ | hs/space-bslc8-acc-3: 30.294 12‰ 0.0 ███████████████████████████▊ | hs/space-bslc8-chunk-1: 3.888 0‰ 0.1 ███▌ | hs/space-bslc8-chunk-2: 3.887 1‰ 0.0 ███▌ | hs/space-bslc8-chunk-3: 3.881 0‰ 0.1 ███▌ | hs/space-bslc8-chunk-4: 3.910 1‰ 0.0 ███▋ | hs/space-bslc8-count: 2.355 1‰ 0.1 ██▏ | hs/space-bslc8-foldl: 4.674 0‰ 0.0 ████▎ | hs/space-bslc8-foldlx-1: 4.676 0‰ 0.0 ████▎ | hs/space-bslc8-foldlx-2: 4.676 0‰ 0.0 ████▎ | hs/space-bslc8-foldr-1: 5.222 0‰ 0.0 ████▊ | hs/space-bslc8-foldr-2: 5.224 1‰ 0.1 ████▊ | hs/space-bslc8-lenfil-1: 4.712 1‰ 0.0 ████▎ | hs/space-bslc8-lenfil-2: 4.714 1‰ 0.0 ████▍ | hs/space-bsl---foldlx: 4.522 0‰ 0.1 ████▏ | hs/space-xxxxx-acc-1: 27.529 6‰ 0.0 █████████████████████████▎ | hs/space-xxxxx-acc-2: 27.200 3‰ 0.0 ████████████████████████▉ | hs/space-xxxxx-foldl: 27.436 8‰ 0.0 █████████████████████████▏ | hs/space-xxxxx-lenfil: 39.343 3‰ 0.0 ████████████████████████████████████| hand/space-bs-c8-acc-1-a: 4.318 1‰ 0.0 ████ | hand/space-bs-c8-acc-1-b: 4.331 1‰ 0.0 ████ | hand/space-bs-c8-acc-1-c: 4.492 1‰ 0.1 ████▏ | hand/space-bs-c8-acc-1-d: 4.354 1‰ 0.0 ████ | hand/space-bs-c8-acc-1-e: 4.424 0‰ 0.1 ████ | hand/space-bs-c8-acc-1-f: 4.164 1‰ 0.0 ███▊ | hand/space-bs-c8-acc-1-g: 4.309 1‰ 0.1 ████ | hand/space-bs-c8-acc-1-h: 4.202 1‰ 0.1 ███▉ | hand/space-bs-c8-acc-1-i: 3.820 1‰ 0.1 ███▌ | hand/space-bs-c8-acc-1-j: 3.472 1‰ 0.0 ███▏ | hand/space-bs-c8-acc-1-k: 3.474 1‰ 0.0 ███▏ | hand/space-bs-c8-acc-1-l: 3.498 1‰ 0.1 ███▎ | hand/space-bs-c8-acc-1-m: 3.397 1‰ 0.1 ███▏ | hand/space-bs-c8-acc-1-n: 3.373 1‰ 0.0 ███▏ | hand/space-bs-c8-acc-1-o: 3.118 1‰ 0.1 ██▉ | hand/space-bs-c8-acc-1-p: 2.935 2‰ 0.0 ██▋ | hand/space-bs-c8-acc-1-q: 3.477 1‰ 0.1 ███▏ | hand/space-bs-c8-acc-1-r: 1.674 1‰ 0.1 █▌ | hand/space-bs-c8-acc-1-s: 1.627 1‰ 0.2 █▌ | c/space-getchar: 13.268 0‰ 0.0 ████████████▏ | c/space-getchar-u: 2.170 0‰ 0.1 ██ | c/space-4k: 1.815 1‰ 0.1 █▋ | c/space-megabuf: 2.763 2‰ 0.1 ██▌ | c/space-getwchar: 15.105 29‰ 0.0 █████████████▉ | c/space-getwchar-u: 8.979 1‰ 0.0 ████████▎ | c/space-32k: 1.786 9‰ 0.1 █▋ | c/space-32k-8: 1.777 1‰ 0.1 █▋ | Memory: Peak ------- KB hs/space-bs-c8-acc-1: 147748 ███████████████████████████████████████▏ | hs/space-bs-c8-count: 147760 ███████████████████████████████████████▏ | hs/space-bs-c8-foldlx-1: 147760 ███████████████████████████████████████▏ | hs/space-bs-c8-foldlx-2: 147764 ███████████████████████████████████████▏ | hs/space-bs-c8-foldrx: 147748 ███████████████████████████████████████▏ | hs/space-bs-c8-lenfil: 147764 ███████████████████████████████████████▏ | hs/space-bslc8-acc-1: 3196 ▉ | hs/space-bslc8-acc-2: 3200 ▉ | hs/space-bslc8-acc-3: 3204 ▉ | hs/space-bslc8-chunk-1: 65204 █████████████████▎ | hs/space-bslc8-chunk-2: 65200 █████████████████▎ | hs/space-bslc8-chunk-3: 75248 ████████████████████ | hs/space-bslc8-chunk-4: 76204 ████████████████████▎ | hs/space-bslc8-count: 79224 █████████████████████ | hs/space-bslc8-foldl: 85880 ██████████████████████▊ | hs/space-bslc8-foldlx-1: 85880 ██████████████████████▊ | hs/space-bslc8-foldlx-2: 85880 ██████████████████████▊ | hs/space-bslc8-foldr-1: 169704 █████████████████████████████████████████████| hs/space-bslc8-foldr-2: 169700 █████████████████████████████████████████████| hs/space-bslc8-lenfil-1: 109408 █████████████████████████████ | hs/space-bslc8-lenfil-2: 109404 █████████████████████████████ | hs/space-bsl---foldlx: 85844 ██████████████████████▊ | hs/space-xxxxx-acc-1: 1912 ▌ | hs/space-xxxxx-acc-2: 1912 ▌ | hs/space-xxxxx-foldl: 1912 ▌ | hs/space-xxxxx-lenfil: 1904 ▌ | hand/space-bs-c8-acc-1-a: 147760 ███████████████████████████████████████▏ | hand/space-bs-c8-acc-1-b: 147764 ███████████████████████████████████████▏ | hand/space-bs-c8-acc-1-c: 147764 ███████████████████████████████████████▏ | hand/space-bs-c8-acc-1-d: 147764 ███████████████████████████████████████▏ | hand/space-bs-c8-acc-1-e: 147764 ███████████████████████████████████████▏ | hand/space-bs-c8-acc-1-f: 147760 ███████████████████████████████████████▏ | hand/space-bs-c8-acc-1-g: 147760 ███████████████████████████████████████▏ | hand/space-bs-c8-acc-1-h: 147764 ███████████████████████████████████████▏ | hand/space-bs-c8-acc-1-i: 147764 ███████████████████████████████████████▏ | hand/space-bs-c8-acc-1-j: 147764 ███████████████████████████████████████▏ | hand/space-bs-c8-acc-1-k: 147764 ███████████████████████████████████████▏ | hand/space-bs-c8-acc-1-l: 147760 ███████████████████████████████████████▏ | hand/space-bs-c8-acc-1-m: 147760 ███████████████████████████████████████▏ | hand/space-bs-c8-acc-1-n: 147764 ███████████████████████████████████████▏ | hand/space-bs-c8-acc-1-o: 147760 ███████████████████████████████████████▏ | hand/space-bs-c8-acc-1-p: 147760 ███████████████████████████████████████▏ | hand/space-bs-c8-acc-1-q: 147760 ███████████████████████████████████████▏ | hand/space-bs-c8-acc-1-r: 147760 ███████████████████████████████████████▏ | hand/space-bs-c8-acc-1-s: 147760 ███████████████████████████████████████▏ | c/space-getchar: 436 ▏ | c/space-getchar-u: 436 ▏ | c/space-4k: 472 ▏ | c/space-megabuf: 146968 ███████████████████████████████████████ | c/space-getwchar: 484 ▏ | c/space-getwchar-u: 484 ▏ | c/space-32k: 500 ▏ | c/space-32k-8: 496 ▏ |