Subj : Spidermonkey performance
To   : netscape.public.mozilla.jseng
From : "Kumar Iyengar" <iyengar@remedy.com>
Date : Mon Apr 12 2004 03:31 pm

I am new to Spidermonkey and was trying to evaluate it with the intention of
using it within our products and performance is one of our biggest concerns.
I did some prototyping and have a few questions:
*) I tried creating one Runtime for all the threads in our product and the
resulting performance was very slow. I have switched to one Runtime per
thread model and found that the performance does improve. Is one Runtime per
thread(or threadpool) the recommended model in a multi-threaded environment?
*) If the above is true then does Spidermonkey have to be built with the
JS_THREADSAFE flag? In other words, if i am using the library with one
Runtime per thread model, then can i use js32.dll without compiling it with
the JS_THREADSAFE flag?
*) Does keeping the compiled version of the script help performance? My
initial tests seemed to indicate that it does not.
*) Does anyone have any other tips on how to improve the performance.

thanks,
--kumar iyengar

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