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List:       kfm-devel
Subject:    Re: Startup time (RE: konqy listview configurability)
From:       aleXXX <alexander.neundorf () rz ! tu-ilmenau ! de>
Date:       2000-03-20 13:49:47
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On Mon, 20 Mär 2000, David Faure wrote:
> I wanted to add that : konqueror doesn't use kdeinit if
> you start it manually (it's one or the other !) but it should
> do if you use kfmclient (for instance if you click on
> an icon on the desktop or use the icon in kicker). But this needs
> to be checked - the code is there but I don't think I saw
> it working finally. :)

Ahhh, that's why I didn't feel a difference ;-)

I could measure the time required by the single steps in its constructor/main
on my K6 200, are you interested ? (AFAIK you have a quite fast machine)

> Note that using KProtocolManager::listing()
> and reading a few values from config files (which is needed in both cases)
> does not slow down anything at all 

"Kleinvieh macht auch Mist" in german, roughly in english "small domestic
animals create dung too" (ouch)
What I want to say, big apps/libs bigger on the disk and requiring more
reallocations slowdown startup. A single addition doesn't significantly slow
down the whole. Tons of small additions do.


I think I read somewhere that

class A
{
   protected:
      int i;
}

A::A()
:i(1234)
{};

is slightly faster than 

A::A()
{
  i=1234;
};

since the seconds extends to 

A::A()
:i(some undefined value)
{
   i=1234;
};

Of course this doesn't effect anything if you change it in one class, but there
are probably hundreds of objects which are initialized if kde starts.
I don't know if the compiler optimizes this or if it would help anything, but
at least IMHO it is nicer and more C++-like code. You see explicitely which
members are new introduced in this class.

Bye
Alex
-- 
If they say it's necessary to fight in a holy war
If they say your life is needed to protect the great ideals
Simply say no
Just let them feel you disagree

Die Krupps

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