max5pariah

I've searched these forums and there's no word about these engines.

jkc was right; JS perf bumped up hard, but not by Adobe's efforts.

Any of the three would do wonders for Max, particularly SquirrelFish Extreme and V8. And the V8 guys aren't taking being beaten in certain benchmarks lightly-- they'll get the next punch in. It's a speed battle now.

Max is one of the places where JS performance really matters. So how long will Max hold onto this antique PukeMonkey engine it comes with?

http://www.satine.org/archives/2008/09/19/squirrelfish-extreme-fastest-javascript-engine-yet/

http://waynepan.com/2008/09/02/v8-tracemonkey-squirrelfish-ie8-benchmarks/

soo-v8-squirrelfish-extreme-tracemonkey

> Max is one of the places where JS performance really matters. So how 

> long will Max hold onto this antique PukeMonkey engine it comes with?

We're watching all of this closely. It's completely unclear which one 

has the best performance, by the way. It's different for every 

benchmark, and each incremental release of the competitive JS 

implementations seem to keep improving. Once this JS arms race settles 

down a bit, we'll evaluate upgrading our engine. TraceMonkey will be 

the easiest for us to integrate given our existing SpiderMonkey code 

base, but none of them will be integrated in the near future. Thanks 

http://weblogs.mozillazine.org/roadmap/archives/2008/09/tracemonkey_update.html

> Max is one of the places where JS performance really matters. So how  
> long will Max hold onto this antique PukeMonkey engine it comes with?

We're watching all of this closely. It's completely unclear which one  
has the best performance, by the way. It's different for every  
benchmark, and each incremental release of the competitive JS  
implementations seem to keep improving. Once this JS arms race settles  
down a bit, we'll evaluate upgrading our engine. TraceMonkey will be  
the easiest for us to integrate given our existing SpiderMonkey code  
base, but none of them will be integrated in the near future. Thanks  
for your patience in the meantime.

http://shootout.alioth.debian.org/u32/benchmark.php?test=all&lang=luajit&lang2=tracemonkey

TraceMonkey does not implement the Array object under the hood with a native C-array and pointer-math indexing. TraceMonkey's Arrays are still hash based through-and-through.

Squirrelfish Extreme, V8, and Microsoft IE8 JScript all use native C-arrays under the hood. They've got heuristics to look at usage of contiguous index regions, which determine growth and reallocation, for instance to keep a huge sparse array small+in multiple array chunks.

Microsoft wrote about their optimizations.

http://blogs.msdn.com/jscript/archive/2008/03/25/performance-optimization-of-arrays-part-i.aspx

Microsoft wrote about their optimizations.
http://blogs.msdn.com/jscript/archive/2008/03/25/performance-optimization-of-arrays-part-i.aspx


Soo...... V8, SquirrelFish Extreme, TraceMonkey