Re: [tycho-user] tycho compiler optimization

["Peter GASSNER" <Peter.GASSNER@xxxxxxxxxxxxxxxxxxxxxxx>]

I tried it with several JIT settings and
found out that this is not the problem. I did further investigations and
determined that class enhancement, which I've to use is the problem. 
Thank you.

Peter



From:      
 Stéphane Vaucher <svaucher@xxxxxxxxxxxxxxxxxxx>
To:      
 Tycho user list <tycho-user@xxxxxxxxxxx>,

Date:      
 07.03.2013 17:09
Subject:    
   Re: [tycho-user]
tycho compiler optimization
Sent by:    
   tycho-user-bounces@xxxxxxxxxxx

---

String concatenations are typically a JIT optimization
that are not done at compile time, but at runtime. Thus, the compiler used
by tycho, whether jdt or Hotspot should not affect runtime performance.
For example, when using Hotspot, the optimization option does absolutely
nothing. I suspect that JDT does something similar (maybe it reduces the
size of the .class files though).

Stephane


On Thu, Mar 7, 2013 at 4:18 AM, Peter GASSNER <Peter.GASSNER@xxxxxxxxxxxxxxxxxxxxxxx>
wrote:
Hi, 

I can face a significant performance loose with tycho-compiler-plugin compared
to Eclipse compiler. I've done profiling my application with YourKit and
can monitor complete different results. I think tycho-compiler doesn't
optimize string concatinations. So if I'm right, how do I enable these
optimization? I tried it in pom file with optimize tag set to true, but
that didn't help. Thanks for your help 

Br Peter
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