small cmake benchmark
Matt Rogers
mattr at kde.org
Thu Apr 6 01:39:29 CEST 2006
On Wednesday 05 April 2006 17:59, Dirk Mueller wrote:
> Hi,
>
> I fixed the unsermake errors in kdelibs locally and ran
> unsermake --compile-jobs=500 / make -j500 with cmake (over a big icecream
> cluster). Enjoy.
>
> unsermake:
>
> real 32m55.389s
> user 15m29.590s
> sys 9m20.351s
>
>
> cmake:
>
> real 7m48.456s
> user 5m31.316s
> sys 3m3.135s
IMHO, that's completely unrealistic, since my unsermake builds with
--compile-jobs=5 on clean kdelibs run in 12 minutes compared to your 32
minutes. There comes a point where the machine simply can't keep up with
feeding the cluster. While these numbers make cmake look good, my cmake
builds with -j5 also run in 12 minutes, so in more realistic conditions,
they're about even.
--
Matt
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