[Mono-dev] GUID generation

pablosantosluac pablosantosluac at terra.es
Fri Jul 27 12:18:36 EDT 2007


I need to generate a large number of GUIDs. I tried with my laptop and a 
.net console application and it can generate about 1million GUIDs in about 

Then I tried the same with mono and it needed 3.4 seconds.

My surprise was trying on our Server (Intel(R) Xeon(TM) CPU 3.00GHz) where I 
got the following results:

8 seconds to generate a million of GUIDs.

Surprinsingly my old Sun Blade 1000 took almost the same time (Solaris 10 
SPARC): 9 seconds.

I guess there is a reason why .NET implements faster GUID generation but, is 
there any other globally unique number generator for Mono/Linux which I can 
use? Also, any idea why the Xeon (which is much, much faster than both the 
laptop and the Solaris box) is so slooow generating GUIDs?



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