Yesterday, Matthew Flatt wrote:
> At Tue, 28 Feb 2012 07:21:24 -0600, Robby Findler wrote:
> > Last I heard, Eli was saying that there was something seriously
> > wrong with 'raco setup' on two cores. Did that ever get resolved?
>
> Commits 012ef60cd545ba and 534886dbe4b6ad (yesterday) were in
> response and improved things on my machine, so it's probably worth
> checking again.
I did a bunch of builds with these two commits in but before Ryan's
change, and it looks like the main problem (2 cores being about twice
slower than a single one) is resolved:
setup-plt -D -j 1 965.63s user 63.00s system 96% cpu 17:49.50 total
setup-plt -D -j 2 860.61s user 77.72s system 139% cpu 11:12.83 total
setup-plt -D -j 3 900.29s user 85.15s system 157% cpu 10:24.68 total
setup-plt -D -j 4 939.24s user 96.29s system 137% cpu 12:34.89 total
For reference, these are the times for a run when there's nothing to
do (so it's probably an indicator of the overheads).
setup-plt -D -j 1 1.85s user 0.47s system 99% cpu 2.343 total
setup-plt -D -j 2 3.59s user 0.90s system 144% cpu 3.113 total
setup-plt -D -j 3 4.17s user 1.16s system 166% cpu 3.199 total
setup-plt -D -j 4 4.70s user 1.39s system 181% cpu 3.356 total
And here's the same two after Ryan's change:
setup-plt -D -j 1 966.43s user 61.98s system 95% cpu 17:54.79 total
setup-plt -D -j 2 807.60s user 75.75s system 168% cpu 8:44.09 total
setup-plt -D -j 4 855.21s user 87.56s system 242% cpu 6:28.22 total
No-op scan:
setup-plt -D -j 1 1.86s user 0.45s system 98% cpu 2.340 total
setup-plt -D -j 2 3.57s user 0.90s system 144% cpu 3.099 total
setup-plt -D -j 3 4.32s user 1.20s system 182% cpu 3.030 total
setup-plt -D -j 4 4.85s user 1.39s system 200% cpu 3.117 total
--
((lambda (x) (x x)) (lambda (x) (x x))) Eli Barzilay:
http://barzilay.org/ Maze is Life!
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