Thread: [Jython-users] JIT under jython, how to enable

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I've tried setting the option in the registry to true, but jython
still says JIT: null when I am starting it.

-- 

Vennlig hilsen 

Syver Enstad

On Fri, Jan 18, 2002 at 06:23:45AM +0100, Syver Enstad wrote:

| I've tried setting the option in the registry to true, but jython
| still says JIT: null when I am starting it.

There is no JIT in jython; the JIT is a java thing.  Which JVM and
which platform are you on?  I don't think linux has a JIT since I
never see it enabled on my system, but I did see it enabled on
windows.

-D

-- 

The fear of the Lord leads to life:
Then one rests content, untouched by trouble.
        Proverbs 19:23

Under Linux, I think the OpenJIT is a good choice for a JIT, see the
following URL:

http://www.openjit.org/

I haven't tried using it with Jython yet, however.

-Brian

----- Original Message -----
From: "dman" <ds...@ri...>
To: <jyt...@li...>
Sent: Friday, January 18, 2002 3:47 PM
Subject: Re: [Jython-users] JIT under jython, how to enable

> On Fri, Jan 18, 2002 at 06:23:45AM +0100, Syver Enstad wrote:
>
> | I've tried setting the option in the registry to true, but jython
> | still says JIT: null when I am starting it.
>
> There is no JIT in jython; the JIT is a java thing.  Which JVM and
> which platform are you on?  I don't think linux has a JIT since I
> never see it enabled on my system, but I did see it enabled on
> windows.
>
> -D
>
> --
>
> The fear of the Lord leads to life:
> Then one rests content, untouched by trouble.
>         Proverbs 19:23
>
>
> _______________________________________________
> Jython-users mailing list
> Jyt...@li...
> https://lists.sourceforge.net/lists/listinfo/jython-users
>

Hi.

What JVM are you using? The Sun JVM
post 1.2 uses the HotSpot JVM,
which does adaptive native compiling,
but does not declare itself with a JIT,
because differently from the previous
generation of JIT its activitity is mostly
transparent. You should see something like:

>java -version
java version "1.3.0_01"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.3.0_01)
Java HotSpot(TM) Client VM (build 1.3.0_01, mixed mode)

Btw, mixed mode means: interpretation plus adaptive 
native compilation of "hotspots".

What is true is that the HotSpot JVM
has a client and server version,
AFAIK there is no server version
from sun for Linux. Both versions
do native compilation but with
different trade-offs wrt maximum
optimization and interactive response.

regards, Samuele Pedroni.

----- Original Message ----- 
From: Syver Enstad <syv...@on...>
To: <jyt...@li...>
Sent: Friday, January 18, 2002 6:23 AM
Subject: [Jython-users] JIT under jython, how to enable

> 
> I've tried setting the option in the registry to true, but jython
> still says JIT: null when I am starting it.
> 
> -- 
> 
> Vennlig hilsen 
> 
> Syver Enstad
> 
> 
> 
> _______________________________________________
> Jython-users mailing list
> Jyt...@li...
> https://lists.sourceforge.net/lists/listinfo/jython-users
> 

"Samuele Pedroni" <ped...@bl...> writes:

> What JVM are you using? 

Thanks Samule, I am indeed using the Sun Java 2 Hot Spot. Thanks for
explaining why JIT is not an option for that VM.

-- 

Vennlig hilsen 

Syver Enstad

From: Syver Enstad <syv...@on...>
> "Samuele Pedroni" <ped...@bl...> writes:
> 
> > What JVM are you using? 
> 
> Thanks Samule, I am indeed using the Sun Java 2 Hot Spot. Thanks for
> explaining why JIT is not an option for that VM.

You're welcome. Btw you can turn it off, the adaptive compiler,
 and some debugging option do that, but it never shows out as a JIT.

Samuele.