[Freeswitch-dev] V8 Performance Tests

Jan Berger jan.berger at video24.no
Sun Jul 4 01:25:32 PDT 2010

These tests can be a bit missleading.


Anyway - using the benchmark test on V8's own test below: Try running it on
Chrome, and after that you try running it on Opera 10.60


The JavaScript in Opera 10.60 gives a higher score in my laptop.






V8 is however really good from an implementation point of view. Using is as
a script engine for an app is very straight forward unless you need threaded


V8 is a Multiprocessing by design, but it is not goof on multithreading.


Threaded access to V8 is supported, but you need to lock V8 while access
some parts of it (not all) - and it's a bit of work to get this part right.


From: freeswitch-dev-bounces at lists.freeswitch.org
[mailto:freeswitch-dev-bounces at lists.freeswitch.org] On Behalf Of Michael
Sent: 3. juli 2010 04:59
To: freeswitch-dev at lists.freeswitch.org
Subject: Re: [Freeswitch-dev] V8 Performance Tests


gcc> &lang=v8&lang2=gcc ?


From: freeswitch-dev-bounces at lists.freeswitch.org
[mailto:freeswitch-dev-bounces at lists.freeswitch.org] On Behalf Of Jan Berger
Sent: Friday, July 02, 2010 5:45 PM
To: freeswitch-dev at lists.freeswitch.org
Subject: [Freeswitch-dev] V8 Performance Tests


Did a quick and dirty performance test comparing C, C++ and V8. This is not
a valid benchmark in any way, it is only a test to give me a feeling about
how "slow" V8 is compared to pure C and C++.


The code also executed in the same loop and C/C++ tests was in a separate
function so all 3 tests had exactly the same overhead in the C++ part.


C : 1,4 Mill/sec 

C++: 0.8 Mill/sec

V8 Run Only: 0,8 Mill/Sec

V8 Compile+Run: 0,4 Mill/sec


Other tests will show other differences - this is just an indication that V8
actually might compare with C/C++ performance wise + their memory handling
look promissing.


Threads ? They use globals and statics that will not thread that easy if you
atteempt to thread V8 itself - I need to experiment and see.




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