Re: [boost] boost::signal poor performance

Subject: Re: [boost] boost::signal poor performance
From: Hansi (hansipet_at_[hidden])
Date: 2008-09-24 01:30:53

I have tested already also a vector<boost::function> against the 
boost::signal. The vector (able to disconnect during events) was about 2 
times slower than boost::function.
I have made now also tests with the new boost::signal library which 
should replace in the future this one. It is about 70times slower....
In the next days I want to make a comparsion with other eventhandlers..
I will post than the results.

Best regards
Hansjörg

Alex MDC schrieb:
> I think it's not so much that boost::signal is slow, just that
> boost::function is really fast :)
> 
> But you're comparison isn't very fair - at the least you should compare a
> vector<boost::function> to a boost::signal and see how the performance goes
> with 1, 2, 10 etc event handlers on each event. Then fix it up so you can
> disconnect an event handler during an event and see how the performance goes
> then (that's the mimimum you'd need for a usable construct).
> 
> I remember reading some threads a while back about the slowness of
> boost::signal, and it's large array of features which are rarely used. Try
> and find them for some more info.
> 
> Personally I'd be interested in a comparison between boost::signal and
> similar multi-event handler constructs in other languages, like C# events.
> 
> Regards,
> Alex MDC
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