Subj : Re: Problem with performance of JSCallFunction
To   : c.ibrahim
From : Brendan Eich
Date : Tue Oct 26 2004 07:09 pm

c.ibrahim wrote:

> What I did in the tryout is simply evaluating the expression (2<3)
> 1000 times for JS_CompileScript-JS_ExecuteScript. JS_CompileFunction
> compiles a function taking parameters p1 & p2 that returns (p1<p2) and
> JS_CallFunction is called 1000 times with parameters value 2 & 3.


Why should this be slower?  It has to set up a stack frame, but so does 
JS_ExecuteScript (just not a call frame).  Something is not right.  You 
should profile (gprof, quantify, whatever you have) and see where the 
cycles are.  It's best to use a hierarchical profiler (either of the two 
listed), to avoid attributing time to common subroutines exclusively, 
instead of spreading it proportionately among ancestor callers.

Can you show your code, or mail it to me?  Then I could profile it too.

/be

.