[prev in list] [next in list] [prev in thread] [next in thread] 

List:       kde-devel
Subject:    Re: Execution replay for Qt/KDE applications
From:       "Oliver Oppitz" <o.oppitz () web ! de>
Date:       2004-10-20 20:36:46
Message-ID: opsf6rjkuyli378s () smtp ! web ! de
[Download RAW message or body]

On Monday 18 October 2004 00:03, Oliver Oppitz wrote:

> One can either "replay at recording speed" (with the same delays), or  
> "replay at full speed",
> which is more useful for debugging since the replay is very fast.
What does "with the same delays" mean precisely? If the tool measures the  
delay (e.g. in ms, us) and reproduces this delay in the replay this does  
not _necessarily_ guarantee identical execution patterns because:
- the machine may have different load during the replay
- the precision of ms may not be good enough

To guarantee an identical replay one needs reconstruct the exact call  
graph i.e. insert the invents in the same invocation of the event loop.

Also, an execution-replay tool would need to capture all input from files  
that the program works on. Does KDExecutor do this?

Regards,
   Oliver


-- 
David Faure, faure@kde.org, sponsored by Trolltech to work on KDE,
Konqueror (http://www.konqueror.org), and KOffice (http://www.koffice.org).


-- 

----------------------------------------------------------------------------
"To dare is to lose foothold a moment
  not to dare os to lose one self" by S.Kierkegaard

 
>> Visit http://mail.kde.org/mailman/listinfo/kde-devel#unsub to unsubscribe <<
[prev in list] [next in list] [prev in thread] [next in thread]