On Tue, 6 Sep 2011 19:01:57 +0200 Jan Kratochvil <jan.kratochvil@xxxxxxxxxx> wrote: > On Tue, 06 Sep 2011 17:39:55 +0200, Gordan Bobic wrote: > > Can you elaborate as to why? My experience and measurements show > > that prelink does more harm than good more offten than not. I can > > think of a lot of reasons to not use it, and very few reasons to > > use it. > > It speeds up the program startup up to 50% (you can Google out various > benchmarks). As almost any performance feature it sure comes with > more complexity of the ELF files handling. The most easy ELF files > processing would be with -O0 code - so why do we build the programs > with -O2? Citation needed? ;) All the benchmarks I have seen have been in the 10-15% range, and that only for packages that load a large number of libraries at startup time. (openoffice, konqueror, etc). > Nowadays some people do not consider performance as anything to care > about so in such case it is understandable they do not see a need for > prelink. > > It is true that if program is written in C it is usually fast enough. > But specifically ARM may be the only popoular platform where I do not > find the C programs fast enough, though. Personally, I would consider prelink a 'ok, we have everything working now, and we want to look at making it faster' instead of enabling it before everything is working or building. kevin
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