Re: [Jython-users] Improving the performance of my Jython app

[Jan D. <in...@ja...>]

Finn Bock wrote:


>> - are there certain operations in Jython that are substantially more 
>> expensive than their CPython counterpart and should be avoided?
> 
> Using the "exec" statement or the "eval" or "compile" function are a lot 
> slower in jython than in CPython. It is because jython creates a java 
> class dynamicly and loads that javaclass with a classloader. This is at 
> least a magnitude slower for jython than for CPython.
> 

Unfortunately, I use neither "exec", "eval" or "compile". In fact, the 
code is really not sophisticated, just the usual, common things: 
creating objects, accessing members, invoking methods, working with 
lists and dicts, ...

In absense of obvious pitfalls, I guess I'll sweat it out and profile 
the application in detail, so I can more precisely pinpoint where all 
the time is going to.

Regards,
Jan