https://bugzilla.novell.com/show_bug.cgi?id=615779
https://bugzilla.novell.com/show_bug.cgi?id=615779#c2
--- Comment #2 from Michael Matz 2011-04-26 13:06:08 UTC ---
FWIW, my core i7 860 (2.8GHz) needs 1.5 seconds for the HouseholderQR step.
It should be noted that this preconditioning of the matrix heavily depends on
the actual contents of it (including time until convergence) and hence
using random data is not at all a useful testcase, it would be better to
initialize the matrix with some known values. I bet that's also the
reason why Windows is so much faster here, its random generator is fairly
low quality.
As this is a mobile processor: does anything change if you disable any
powersaving (just so to rule out on obvious reason for slowdowns)?
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