Re: [boost] [xpressive] Performance Tuning?

Subject: Re: [boost] [xpressive] Performance Tuning?
From: Edward Grace (ej.grace_at_[hidden])
Date: 2009-07-28 10:49:28

>> That does not make use of boost::bind - but tries to avoid the  
>> optimizer
>> getting rid of void(void) functions by using globals.
>
> I have no clue why I am still awake, brain is already shut down, code
> is a blurry blob to me right now, but I still compiled and ran your
> latest file.  :)

Thanks.

> The results:
>
> initializing input strings...
> Calibrating overhead......done
> Timer overhead (t_c) ~= : 12
> Jitter               ~= : 8.43769e-015
> qi_parse vs atoi    : 1381.05 1385.57 1389.6% faster.
> qi_parse vs strtol  : 1365.82 1389.6 1597.94% faster.
> strtol vs atoi      : 1.03202 1.04052 10.6428% faster.
> qi_parse vs qi_parse : 0 0 0% faster.

Hmmm....  So you observe the same as me.  Spirit2 ~1000% faster than  
the basic libraries as opposed to 25% faster from the previous tests.

"Curiouser and curiouser" said Alice.

-ed
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"No more boom and bust." -- Dr. J. G. Brown, 1997