Re: [jamboost] Optimization: flags setting

From: Pedro Ferreira (pedro.ferreira_at_[hidden])
Date: 2004-12-17 09:27:59

Well done!

Pedro

Em 17 Dec 2004, às 13:44, Vladimir Prus escreveu:

>
>
>
> Summary: the toolset.set-target-variables rule was pretty slow and is
> optimised a bit now.
>
> Details: setting variables on targets includes two parts: deciding 
> what flags
> are applicable and applying the flags. The first part requires checking
> property sets and is pretty slow. It's optimised by cacheing.
>
> Compatibility: only Boost.Build update is needed
>
> Performance: results on two testcases (each run 3 times) are below. 
> Not very
> great change, but still significant.
>
>
> Femtown (reference Boost.Build)
> Real: min 39:600, max 44:420, avg 42:86
> User: min 36:240, max 37:340, avg 36:833
>
> Femtown (CVS Boost.Build)
> Real: min 35:250, max 43:270, avg 39:370
> User: min 32:360, max 34:60, avg 33:430
>
>
> TBLib (reference Boost.Build)
> Real: min 19:60, max 25:370, avg 22:730
> User: min 17:150, max 19:70, avg 18:203
>
> TBLib (CVS Boost.Build)
> Real: min 16:450, max 19:230, avg 17:576
> User: min 14:540, max 15:420, avg 14:903
>
>
> - Volodya
>
>
>
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