This set of measurements was captured by me on a friend's machine at his place, namely an Intel Core Duo laptop running Ubuntu 7.10. The benchmarks were run on 2007-12-09 using ghc 6.9.20071208 (approx) in runlevel 1 (single-user mode). I used an early version of the benchmark suite which didn't capture the exact ghc version used and an early version of my ghc install scripts that didn't try for a precise version. It ran on what was ghc head at the time. -Peter albatross ghc 6.9.20071208 (or thereabouts) Genuine Intel(R) CPU T2300 @ 1.66GHz (Core Duo) 1667.000 MHz TESTKIND=THOROUGH SUFFIX= Time (byte counting) std -------------------- avg dev slack hs/byte-bs----acc: 0.918 4‰ 0.1 █████▌ | hs/byte-bs----foldlx: 1.014 2‰ 0.2 ██████▏ | hs/byte-bs----foldrx: 0.999 2‰ 0.1 ██████ | hs/byte-bsl---acc: 1.957 1‰ 0.1 ███████████▉ | hs/byte-xxxxx-acc-1: 3.591 2‰ 0.1 █████████████████████▊ | hs/byte-xxxxx-acc-2: 3.598 4‰ 0.1 █████████████████████▊ | hs/byte-xxxxx-foldl: 3.594 1‰ 0.1 █████████████████████▊ | c/byte-getchar: 3.761 2‰ 0.1 ██████████████████████▊ | c/byte-getchar-u: 0.719 2‰ 0.3 ████▍ | c/byte-4k: 0.101 10‰ 3.1 ▋ | Memory: Peak ------- KB hs/byte-bs----acc: 147784 ████████████████████████████████████████▏ | hs/byte-bs----foldlx: 147812 ████████████████████████████████████████▏ | hs/byte-bs----foldrx: 147788 ████████████████████████████████████████▏ | hs/byte-bsl---acc: 3228 ▉ | hs/byte-xxxxx-acc-1: 1904 ▌ | hs/byte-xxxxx-acc-2: 1908 ▌ | hs/byte-xxxxx-foldl: 1908 ▌ | c/byte-getchar: 432 ▏ | c/byte-getchar-u: 440 ▏ | c/byte-4k: 436 ▏ | Time (space counting) std --------------------- avg dev slack hs/space-bs-c8-acc-1: 1.313 0‰ 0.2 ███████▉ | hs/space-bs-c8-foldlx-1: 1.326 1‰ 0.1 ████████ | hs/space-bs-c8-foldlx-2: 1.328 1‰ 0.1 ████████ | hs/space-bs-c8-foldrx: 1.128 1‰ 0.2 ██████▉ | hs/space-bs-c8-lenfil: 1.327 2‰ 0.2 ████████ | hs/space-bslc8-acc-1: 3.002 1‰ 0.1 ██████████████████▏ | hs/space-bslc8-acc-2: 3.010 2‰ 0.0 ██████████████████▎ | hs/space-bslc8-acc-3: 2.586 1‰ 0.1 ███████████████▋ | hs/space-bslc8-chunk-1: 1.192 0‰ 0.0 ███████▎ | hs/space-bslc8-chunk-2: 1.189 0‰ 0.1 ███████▏ | hs/space-bslc8-chunk-3: 1.272 1‰ 0.2 ███████▊ | hs/space-bslc8-foldl: 1.517 0‰ 0.1 █████████▏ | hs/space-bslc8-foldlx-1: 1.516 0‰ 0.0 █████████▏ | hs/space-bslc8-foldlx-2: 1.511 0‰ 0.0 █████████▏ | hs/space-bslc8-foldr-1: 1.205 1‰ 0.2 ███████▎ | hs/space-bslc8-foldr-2: 1.202 3‰ 0.1 ███████▎ | hs/space-bslc8-lenfil-1: 1.400 0‰ 0.0 ████████▌ | hs/space-bslc8-lenfil-2: 1.396 0‰ 0.0 ████████▌ | hs/space-bsl---foldlx: 1.476 1‰ 0.1 ████████▉ | hs/space-xxxxx-acc-1: 4.245 1‰ 0.0 █████████████████████████▋ | hs/space-xxxxx-acc-2: 4.241 2‰ 0.1 █████████████████████████▋ | hs/space-xxxxx-foldl: 4.239 2‰ 0.1 █████████████████████████▋ | hs/space-xxxxx-lenfil: 6.287 2‰ 0.0 ██████████████████████████████████████| c/space-getchar: 4.031 18‰ 0.0 ████████████████████████▍ | c/space-getchar-u: 0.609 2‰ 0.7 ███▋ | c/space-4k: 0.465 2‰ 0.6 ██▊ | c/space-megabuf: 0.613 1‰ 0.3 ███▊ | c/space-getwchar: 4.584 1‰ 0.1 ███████████████████████████▊ | c/space-getwchar-u: 2.437 0‰ 0.1 ██████████████▊ | c/space-32k: 0.445 1‰ 0.5 ██▊ | c/space-32k-8: 0.448 0‰ 0.0 ██▊ | Memory: Peak ------- KB hs/space-bs-c8-acc-1: 147772 ████████████████████████████████████████ | hs/space-bs-c8-foldlx-1: 147800 ████████████████████████████████████████▏ | hs/space-bs-c8-foldlx-2: 147804 ████████████████████████████████████████▏ | hs/space-bs-c8-foldrx: 147776 ████████████████████████████████████████ | hs/space-bs-c8-lenfil: 147796 ████████████████████████████████████████▏ | hs/space-bslc8-acc-1: 3192 ▉ | hs/space-bslc8-acc-2: 3192 ▉ | hs/space-bslc8-acc-3: 3188 ▉ | hs/space-bslc8-chunk-1: 65208 █████████████████▋ | hs/space-bslc8-chunk-2: 65212 █████████████████▋ | hs/space-bslc8-chunk-3: 75232 ████████████████████▍ | hs/space-bslc8-foldl: 85856 ███████████████████████▎ | hs/space-bslc8-foldlx-1: 85852 ███████████████████████▎ | hs/space-bslc8-foldlx-2: 85856 ███████████████████████▎ | hs/space-bslc8-foldr-1: 169684 ██████████████████████████████████████████████| hs/space-bslc8-foldr-2: 169684 ██████████████████████████████████████████████| hs/space-bslc8-lenfil-1: 109404 █████████████████████████████▋ | hs/space-bslc8-lenfil-2: 109404 █████████████████████████████▋ | hs/space-bsl---foldlx: 85880 ███████████████████████▎ | hs/space-xxxxx-acc-1: 1916 ▌ | hs/space-xxxxx-acc-2: 1916 ▌ | hs/space-xxxxx-foldl: 1916 ▌ | hs/space-xxxxx-lenfil: 1892 ▌ | c/space-getchar: 436 ▏ | c/space-getchar-u: 436 ▏ | c/space-4k: 468 ▏ | c/space-megabuf: 146968 ███████████████████████████████████████▉ | c/space-getwchar: 484 ▏ | c/space-getwchar-u: 480 ▏ | c/space-32k: 496 ▏ | c/space-32k-8: 500 ▏ |