Re: normalized signature of signals/slots

On Monday 14 of November 2005 15:40, Olivier Goffart wrote:
> Le Lundi 14 Novembre 2005 14:56, Koos Vriezen a écrit :
> > On Mon, Nov 14, 2005 at 01:44:14PM +0100, Olivier Goffart wrote:
> > > As result i obtain
> > >
> > > normalized: 2469ms
> > > usual: 5323ms    ratio: 2.15593
> >
> > 2.6ms/connect still doesn't say much actually, does sound quite slow
> > (but maybe you ran it on a 66 MHz ARM CPU :)
>
> 5323/(20000*3) = less than 0.1 ms  per connect/disconnect pair
> It was on a 1,8Ghz Pentium M
>
> Yes, it's quite few.  that is why i ask if it would be interesting to write
> a script that normalize the signature of signals in the code.

 There's benchmarking for finding out things like that.

> I don't know how many signals/slots are connected at kde start

 static int cnt = 0;
 qDebug( "CONNECTS: %d", ++cnt );

> , but it 
> should be much.
> is gaining 0.02ms per connection interesting enough ?

 Profiling kwrite startup with sysprof here says about 1-2% is spent in 
connect() but it's so fast that it's reaching samples resolution and as such 
I wouldn't trust it so much. You might want to try with cachegrind or a 
slower machine.

-- 
Lubos Lunak
KDE developer
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