Re: autotest speedups

[Ralf Wildenhues]

* Paolo Bonzini wrote on Fri, Oct 12, 2007 at 07:51:47PM CEST:
> >
> >6 seconds (35% speedup) for executing just one test!  And when executing 
> >ten tests, 17 seconds speedup!
> 
> Wow indeed.  But what are the timings on Linux? :-)

Much smaller absolute differences, and 28% speedup vs. 16% slowdown:
(beware, timings are quite variable on this laptop, best of three
shown).  And yes, the whole testsuite takes on the order of 20 mins.

pre patch:
time (./testsuite 1 >/dev/null)

real    0m2.206s
user    0m1.832s
sys     0m0.304s

time (./testsuite -10 >/dev/null)

real    0m6.216s
user    0m4.656s
sys     0m1.524s


post patch:
time (./testsuite 1 >/dev/null)

real    0m1.720s
user    0m1.408s
sys     0m0.288s

time (./testsuite -10 >/dev/null)


real    0m6.870s
user    0m5.104s
sys     0m1.684s

Cheers,
Ralf