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Posted to users@maven.apache.org by kristian <m....@web.de> on 2010/08/19 18:06:23 UTC
I need to share how to improve maven's performance
hi,
since I found out how to improve performance of maven3 significantly
on my linux box, I thought I need to share this:
just set
$ export MAVEN_OPTS=-client
see a little "benchmark"
http://gist.github.com/538194
the improvement remains even for longer maven runs.
regards, Kristian
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Re: I need to share how to improve maven's performance
Posted by rpomeroy <rp...@me.com>.
Jason van Zyl-2 wrote:
>
> Sweet. We can look at the various platforms and see if we can apply this
> option across the board. Even if it's only for linux we can add it there.
>
> On Aug 19, 2010, at 9:06 AM, kristian wrote:
>
>> hi,
> snip...
>
So can someone explain exactly what this flag is doing?
Regards,
Ron
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Re: I need to share how to improve maven's performance
Posted by kristian <m....@web.de>.
have a look at some tips how to improve startup time for jruby and
some of it holds true for maven as well:
http://blog.headius.com/2010/03/jruby-startup-time-tips.html
with regards, Kristian
2010/8/23 Martin Schayna <ma...@abra.eu>:
> On 08/23/2010 10:55 AM, Baptiste MATHUS wrote:
>>
>> - Then for Linux or other platforms, with current typical machines,
>> it's
>> very often defaulting to Server VM.
>> But it can vary, and is precisely explained in the link Hervé put (more
>> directly, see here :
>>
>> http://www.oracle.com/technetwork/java/ergo5-140223.html#0.0.%20Garbage%20collector,%20heap,%20and%20runtime%20compiler%7Coutline
>> ).
>>
>
> This describes -client/-server defaults for Java version 1.4.2 only, it may
> change across newer versions. In fact I didn't google it for Java6, but
> there is a small note on Wikipedia for Java7:
>
> Allow the virtual machine to use both the Client and Server compilers in the
> same session with a technique called Tiered compilation:
> * The Client would be used at startup (because it is good at startup and
> for small applications),
> * The Server would be used for long-term running of the application
> (because it outperforms the Client compiler for this).
>
> http://en.wikipedia.org/wiki/Java_performance#Future_improvements
>
> Martin Schayna
>
>
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>
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Re: I need to share how to improve maven's performance
Posted by Martin Schayna <ma...@abra.eu>.
On 08/23/2010 10:55 AM, Baptiste MATHUS wrote:
> - Then for Linux or other platforms, with current typical machines, it's
> very often defaulting to Server VM.
> But it can vary, and is precisely explained in the link Hervé put (more
> directly, see here :
> http://www.oracle.com/technetwork/java/ergo5-140223.html#0.0.%20Garbage%20collector,%20heap,%20and%20runtime%20compiler%7Coutline
> ).
>
This describes -client/-server defaults for Java version 1.4.2 only, it
may change across newer versions. In fact I didn't google it for Java6,
but there is a small note on Wikipedia for Java7:
Allow the virtual machine to use both the Client and Server compilers in
the same session with a technique called Tiered compilation:
* The Client would be used at startup (because it is good at
startup and for small applications),
* The Server would be used for long-term running of the application
(because it outperforms the Client compiler for this).
http://en.wikipedia.org/wiki/Java_performance#Future_improvements
Martin Schayna
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Re: I need to share how to improve maven's performance
Posted by Baptiste MATHUS <ml...@batmat.net>.
To sum up:
- Maven's JVM under 32-bits windows is not concerned. Hotspot always
defaults to client vm under Windows.
- Then for Linux or other platforms, with current typical machines, it's
very often defaulting to Server VM.
But it can vary, and is precisely explained in the link Hervé put (more
directly, see here :
http://www.oracle.com/technetwork/java/ergo5-140223.html#0.0.%20Garbage%20collector,%20heap,%20and%20runtime%20compiler%7Coutline
).
For the record, I just checked on my 32-bits windows box, and there's no
difference between the two executions.
Hope this helps.
Cheers
2010/8/21 Hervé BOUTEMY <he...@free.fr>
> here are some explanations: [1] and [2]
>
> [1]
>
> http://www.oracle.com/technetwork/java/hotspotfaq-138619.html#compiler_default
>
> [2] http://www.oracle.com/technetwork/java/ergo5-140223.html
>
> Le jeudi 19 août 2010, Jason van Zyl a écrit :
> > Sweet. We can look at the various platforms and see if we can apply this
> > option across the board. Even if it's only for linux we can add it there.
> >
> > On Aug 19, 2010, at 9:06 AM, kristian wrote:
> > > hi,
> > >
> > > since I found out how to improve performance of maven3 significantly
> > > on my linux box, I thought I need to share this:
> > >
> > > just set
> > > $ export MAVEN_OPTS=-client
> > >
> > > see a little "benchmark"
> > > http://gist.github.com/538194
> > >
> > > the improvement remains even for longer maven runs.
> > >
> > > regards, Kristian
> > >
> > > ---------------------------------------------------------------------
> > > To unsubscribe, e-mail: users-unsubscribe@maven.apache.org
> > > For additional commands, e-mail: users-help@maven.apache.org
> >
> > Thanks,
> >
> > Jason
> >
> > ----------------------------------------------------------
> > Jason van Zyl
> > Founder, Apache Maven
> > http://twitter.com/jvanzyl
> > ---------------------------------------------------------
> >
> > A language that doesn’t affect the way you think about programming is not
> > worth knowing.
> >
> > -— Alan Perlis
>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: users-unsubscribe@maven.apache.org
> For additional commands, e-mail: users-help@maven.apache.org
>
>
--
Baptiste <Batmat> MATHUS - http://batmat.net
Sauvez un arbre,
Mangez un castor !
Re: I need to share how to improve maven's performance
Posted by Hervé BOUTEMY <he...@free.fr>.
here are some explanations: [1] and [2]
[1]
http://www.oracle.com/technetwork/java/hotspotfaq-138619.html#compiler_default
[2] http://www.oracle.com/technetwork/java/ergo5-140223.html
Le jeudi 19 août 2010, Jason van Zyl a écrit :
> Sweet. We can look at the various platforms and see if we can apply this
> option across the board. Even if it's only for linux we can add it there.
>
> On Aug 19, 2010, at 9:06 AM, kristian wrote:
> > hi,
> >
> > since I found out how to improve performance of maven3 significantly
> > on my linux box, I thought I need to share this:
> >
> > just set
> > $ export MAVEN_OPTS=-client
> >
> > see a little "benchmark"
> > http://gist.github.com/538194
> >
> > the improvement remains even for longer maven runs.
> >
> > regards, Kristian
> >
> > ---------------------------------------------------------------------
> > To unsubscribe, e-mail: users-unsubscribe@maven.apache.org
> > For additional commands, e-mail: users-help@maven.apache.org
>
> Thanks,
>
> Jason
>
> ----------------------------------------------------------
> Jason van Zyl
> Founder, Apache Maven
> http://twitter.com/jvanzyl
> ---------------------------------------------------------
>
> A language that doesn’t affect the way you think about programming is not
> worth knowing.
>
> -— Alan Perlis
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Re: I need to share how to improve maven's performance
Posted by Jason van Zyl <ja...@sonatype.com>.
Sweet. We can look at the various platforms and see if we can apply this option across the board. Even if it's only for linux we can add it there.
On Aug 19, 2010, at 9:06 AM, kristian wrote:
> hi,
>
> since I found out how to improve performance of maven3 significantly
> on my linux box, I thought I need to share this:
>
> just set
> $ export MAVEN_OPTS=-client
>
> see a little "benchmark"
> http://gist.github.com/538194
>
> the improvement remains even for longer maven runs.
>
> regards, Kristian
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: users-unsubscribe@maven.apache.org
> For additional commands, e-mail: users-help@maven.apache.org
>
Thanks,
Jason
----------------------------------------------------------
Jason van Zyl
Founder, Apache Maven
http://twitter.com/jvanzyl
---------------------------------------------------------
A language that doesn’t affect the way you think about programming is not worth knowing.
-— Alan Perlis