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From: Richard Purdie <richard.purdie@linuxfoundation.org>
To: poky <poky@pokylinux.org>
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Date: Thu, 24 Feb 2011 15:40:30 +0000
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Subject: Re: Further build profiling info
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On Wed, 2011-02-16 at 20:49 +0000, Richard Purdie wrote:
> We've had some fixes into master which:
> 
> * improve the pseudo-native build time (worth 2 minutes)
> * shorten the rpm rootfs creation times
> * enabling parallel builds for some packages
> * Improve the task processing/creation latency (worth 1-2 minutes)
> 
> The time for the same build as above is now taking:
> 
> real	97m1.204s
> user	385m24.460s
> sys	48m30.990s
> (4848 tasks)
> 
> and this is despite adding in some extra documentation generation pieces
> too (which accounts for the extra user time) so quite a nice
> improvement. Nice work but I think there is further low hanging fruit to
> gain a little more time back too! :)

I've just run a test of Poky master and we've regressed to:

real	106m46.524s
user	385m28.050s
sys	47m30.990s
(4948 tasks)

At this point I can only think its the extra documentation dependencies
that have changed things. I'm more than a little disappointed in
this :(.

Cheers,

Richard