On Tuesday 21 April 2009 08:19:23 Philip Rowlands wrote: > On Tue, 21 Apr 2009, Toralf F?rster wrote: > > For a long time I used the command "factor" to test my system WRT the cpu > > ondemand governor of the linux kernel, eg for issues like this : > > http://bugzilla.kernel.org/show_bug.cgi?id=12385 > > > > However switching from coreutils-6.10 to 7.1 (stable Gentoo Linux) now > > the factor command is too fast: it takes only 0.003 sec instead of 5.5 > > sec for the same prime number. > > That's probably due to this entry from NEWS: > > * Noteworthy changes in release 7.0 (2008-10-05) [beta] > > If the GNU MP library is available at configure time, factor and > expr support arbitrarily large numbers. Pollard's rho algorithm is > used to factor large numbers.
if GMP is too fast, then you could try building coreutils with USE=gmp. if coreutils itself got a new algo, then i guess save the old binary ... -mike
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