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Herbert Valerio Riedel authored
Summary: Today's hardware is much faster, so it makes sense to report timings with more precision, and possibly help reduce rounding-induced fluctuations in the nofib statistics. This commit increases the precision of all timings previously reported with a granularity of 10ms to 1ms. For instance, the `+RTS -S` output is now rendered as: Alloc Copied Live GC GC TOT TOT Page Flts bytes bytes bytes user elap user elap 641936 59944 158120 0.000 0.000 0.013 0.001 0 0 (Gen: 0) 517672 60840 158464 0.000 0.000 0.013 0.002 0 0 (Gen: 0) 517256 58800 156424 0.005 0.005 0.019 0.007 0 0 (Gen: 1) 670208 9520 158728 0.000 0.000 0.019 0.008 0 0 (Gen: 0) ... Tot time (elapsed) Avg pause Max pause Gen 0 24 colls, 0 par 0.002s 0.002s 0.0001s 0.0002s Gen 1 3 colls, 0 par 0.011s 0.011s 0.0038s 0.0055s TASKS: 4 (1 bound, 3 peak workers (3 total), using -N1) SPARKS: 0 (0 converted, 0 overflowed, 0 dud, 0 GC'd, 0 fizzled) INIT time 0.001s ( 0.001s elapsed) MUT time 0.005s ( 0.006s elapsed) GC time 0.014s ( 0.014s elapsed) EXIT time 0.001s ( 0.001s elapsed) Total time 0.032s ( 0.020s elapsed) Note that this change also requires associated changes in the nofib submodule. Test Plan: tested with modified nofib Reviewers: simonmar, nomeata, austin Subscribers: simonmar, relrod, carter Differential Revision: https://phabricator.haskell.org/D97
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