Re: [Boost-build] Major engine changes

Subject: Re: [Boost-build] Major engine changes
From: Moritz Hassert (mhassert_at_[hidden])
Date: 2011-12-01 13:04:49

Great job Steve!

Am Dienstag, 29. November 2011, 16:02:06 schrieb Steven Watanabe:
> I've just committed a major rewrite of the
> jam interpreter. So, far, I'm seeing a 2x speed
> up running bjam -n -d0 in $BOOST_ROOT/status.

I gave the new b2 from current trunk a try with a rather huge project of ours.
The numbers are even more impressive:  I get a speed up of 3.7x!
(I repeated boths commands a few times to load everything into caches and eliminate io-waits.)

*** OLD ***
$ time b2 libs tools toolset=gcc-4.5 address-model=32 address-model=64
...patience...
...patience...
...patience...
...patience...
...found 58715 targets...

real    0m38.264s
user    0m37.874s
sys     0m0.328s

*** NEW ***
$ time /tmp/b2test/bin/b2 libs tools toolset=gcc-4.5 address-model=32 address-model=64
...patience...
...patience...
...patience...
...patience...
...found 58715 targets...

real    0m10.654s
user    0m10.261s
sys     0m0.332s

Thanks and keep up the good work!

Moritz

Geschaeftsfuehrer: Dipl.-Inform. Christopher Asp
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