From kde-devel  Mon Jun 17 20:14:54 2002
From: Leon Bottou <leon () bottou ! org>
Date: Mon, 17 Jun 2002 20:14:54 +0000
To: kde-devel
Subject: Objprelink revisited.
X-MARC-Message: https://marc.info/?l=kde-devel&m=102434509210901


John Ryland and I did some extra-work on objprelink.
Overview, explanations, details and benchmarks can be found in:
  http://objprelink.sourceforge.net/objprelink.html

Summary of the conclusions:

- Recent binutils have been improved and now offer 
  performance similar to the old version of objprelink.
  In fact, the new binutils and the old objprelink
  are two different ways to achieve the same
  complexity reduction.

- A new version, objprelink2, gives a new runtime link speedup.
  But it no longer translate into improved KDE responsiveness 
  because the runtime linker delay is now a small component 
  of the application startup time.

I do not suggest using objprelink2 unless 
your linux box lacks the improved binutils.  
See <http://objprelink.sourceforge.net/> to check.
Be warned that objprelink is not a production tool.
This is more a research tool whose ideas, hopefully,
might be useful to others.

I also suggest removing the --enable-objprelink from 
the KDE configure.  Those who need objprelink will 
use objprelink2 and will not need this option.

- Leon Bottou


 
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