Re: Getting to 4.0 end game (Performance Tools)

[Adam Greene <ag...@professionalopensource.ca>]

Eclipse Foundation offers a free profiler, not sure all that it does (have 
only had a chance to look at it quickly).  It is the TPTP project (Test and 
PerformanceTools Platform).  http://www.eclipse.org/tptp/

NetBeans offers one as well.  http://profiler.netbeans.org/

Also AppPerfect Standard Edition http://www.appperfect.com

So don't say you don't have one now :-)

----- Original Message ----- 
From: "p green" <pg...@dsl.pipex.com>
To: "Tapestry development" <ta...@jakarta.apache.org>
Sent: Wednesday, October 19, 2005 5:49 AM
Subject: Re: Getting to 4.0 end game


> The issue of memory leaks. I was definitely running on a system with
> caching enabled. Unless there is another way to disable the cache
> other than using the argument:
>
> -Dorg.apache.tapestry.disable-caching=true
>
> I do not mind admitting to stupid mistakes (we all make them) but I
> am sure the cache was enabled on two non-development systems which
> failed with OutOfMemoryError's. Both were running tomcat 5.0 one was
> a Linux system and the other was a Windows XP system.
>
> They failed when rendering the same page repeatedly with the data.
> This page was very large (i.e. 5000 rows of 9 columns). I changed
> this page to only render a maximum of 100 rows.
>
> I have not done any further tests and never ran a profiler over the
> code (because I do not have one).
>
> I do not want to send you on a wild goose chase  but I still think
> there could still be an issue here.
>
> Paul
>
> On 16 Oct 2005, at 16:24, Howard Lewis Ship wrote:
>
>> I believe we are getting very close to the 4.0 end game.
>>
>> I still have a few bugs I really want to fix, and some more
>> documentation and tutorials that *should* get written.  But nothing
>> that can't wait for a 4.0.1 bug fix release or a 4.1 release.
>>
>> I would encourage developers to take a look at the open bug list and
>> see what's pending.
>>
>> How many people are using 4.0 in a production environment right now?
>> Or ramping up to a production environment?
>>
>> My biggest concern is runtime performance. My gut feeling is that
>> outside of startup time, 4.0 is equal to or better performing than
>> 3.0.  I've been troubled by some concerns on the web about memory
>> leeks possibly related to Javassist class creation (but I suspect
>> those people are running with caching disabled and just don't know it,
>> or won't admit it).
>>
>> I'm hoping that beta-12 will be the last beta, and we can call a vote
>> for a release candidate after that. However, release working software
>> is more important than keeping to a schedule.
>>
>> --
>> Howard M. Lewis Ship
>> Independent J2EE / Open-Source Java Consultant
>> Creator, Jakarta Tapestry
>> Creator, Jakarta HiveMind
>>
>> Professional Tapestry training, mentoring, support
>> and project work.  http://howardlewisship.com
>>
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>>
>
> 


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