Good news, bad news

John Rose john.r.rose at oracle.com
Mon May 23 12:02:59 PDT 2011


On May 23, 2011, at 11:45 AM, Charles Oliver Nutter wrote:

> I did see fib_ruby compile and was able to get assembly dumps out, but
> it performed terribly. I'll try to make extra sure everything's
> jitting.
> 
> Ahh the joys of a mixed-mode runtime, eh?

Indeed.  Anyway, thanks for pushing on this.

Sometimes you can get your dumps faster by using -XX:-DisplayVMOutput along with -XX:+PrintAssembly.  The output goes to hotspot.log anyway.

Also, -XX:CompileCommand=print,foo::bar will focus assembly printing on the method(s) you care about.

-- John


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