Re: Performance penalty of using private variable in inner class

 Hi there.  
* go here:  https://jdk7.dev.java.net/
* click "Latest JDK 7 binary snapshots"
* download the "..... self extracting DEBUG Jar file" appropriate for your platform

This guy keeps my favorite list of JVM options:
http://blogs.sun.com/watt/resource/jvm-options-list.html

Some other guy out there scanned the sun java source code and has an exhaustive list of options, but the url eludes me.

Hope this helps,
Ron


> -----Original Message-----
> From: Discussion of advanced Java topics. 
> [mailto:[email protected]] On Behalf Of Endre Stølsvik
> Sent: Friday, August 31, 2007 5:09 AM
> To: [email protected]
> Subject: Re: [ADVANCED-JAVA] Performance penalty of using 
> private variable in inner class
> 
> [email protected] wrote:
> > I diffed the assembly output from hotspot and my layperson 
> conclusion is there is no [meaningful] difference.
> >
> > With the java 7 debug build I ran:
> > javac T.java && java -server -XX:+PrintOptoAssembly -Xcomp 
> -cp . T > 
> > private javac T.java && java -server -XX:+PrintOptoAssembly 
> -Xcomp -cp 
> > . T > pp
> >
> 
> I do know this is a rather old post to reply to, but I just 
> came over it..
> 
>  From where did you get this exciting option?! When I google 
> it, this post is actually on place #3 and #4 of the result 
> list, with #1 and #2 being some bugs.sun.com entries..!
> 
> How do you get hold of these [fast]debug builds?
> 
> Other cool options, listed along with the one you came up 
> with, are the PrintEscapeAnalysis and DoEscapeAnalysis, but I 
> guess these aren't available/enabled yet, at least Brian 
> tells us that whenever they crop up in some message..!
> 
> Is there a place that list ALL the X and XX options, 
> preferably per JVM version? It doesn't really seems like way 
> too much to ask, but I've never come across it. And the 
> documentation there is, for example on the GC tuning stuff, 
> is spread out in lots of documents, some PDFs and whatnots, 
> and is always not for the current JVM!
> 
> Kind regards,
> Endre.
> 
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