instruction timings / optimization ?
Charles Oliver Nutter
headius at headius.com
Fri Sep 18 21:37:47 PDT 2009
On Fri, Sep 18, 2009 at 4:52 PM, James Ladd <james_ladd at hotmail.com> wrote:
> 1. Is there a document that details each VM instruction and the time it
> takes in cycles on
> a particular architecture?
I don't think it's possible to accurately measure this information.
The JVM bytecode is essentially an intermediate representation that
the JVM takes and optimizes when compiling to native code. The cycles
a given instruction takes will have little relation to the actual
native code generated.
> 2. Would anyone else find this information useful ?
If it were possible to determine, yes :) But it's not.
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