[gatein-dev] Fix in portal list

[Wesley Hales]

Yes, very awesome to have and thanks for fixing that Julien!

I have created a demo (using the bridge) leveraging the available JMX  
data. I have also created a "live view" feature which allows for the  
charts to refresh in real time at specified intervals (using polling)  
- I was going to use ajax push, but I found a bug in the bridge that  
does not return the response.

So for a very simple test, I used Jmeter and created a 20 user/thread  
load with 5 loop count, and then added every default portlet to a  
single page - and watched my macbook fall to its knees ;) but it is  
cool to see the statistics that it generates.

The code is pretty much ready at this point, I am just making things  
look attractive and also using it to test questionable RF components  
for EPP support.

Here is a preview http://img4.yfrog.com/i/picture5eh.png/


On Nov 16, 2009, at 9:00 AM, Julien Viet wrote:

>
> On Nov 16, 2009, at 2:50 PM, Prabhat Jha wrote:
>
>> Are these stats on by default?
>
> yes
>
>> What is the overhead of getting these metrics?
>
> The collecting of data does not take much overheard, I have never  
> spotted them in my JProfiler so far.
>
> The processing of collected data must not be free, but I would not  
> expect to have a sampling with a one second period to introduce much  
> bias.
>
>> BTW: It's awesome data to have.
>
> thanks :-)
>
>>
>> ----- Original Message -----
>> From: "Julien Viet" <julien at julienviet.com>
>> To: gatein-dev at lists.jboss.org
>> Cc: "Wesley Hales" <whales at redhat.com>, "Marek Posolda" <mposolda at redhat.com 
>> >
>> Sent: Monday, November 16, 2009 4:28:20 AM GMT -06:00 US/Canada  
>> Central
>> Subject: [gatein-dev] Fix in portal list
>>
>> I want to bring to you that useful following statistic available via
>> JMX, specially in JBoss where you can use the JMX console.
>>
>> Wesley has been using it for his bridge demo (and I fixed the bug  
>> that
>> was present Wes :-) ).
>>
>> I believe also that Marek could collect information during load
>> testing and create graphs that would be correlated with the
>> performances graphs. (for instance , showing the portal throughput  
>> and
>> the average response time on the same graph, or showing the usage of
>> the various caches correlated with the througput, I guess you get the
>> idea).
>>
>> With the JMX console, the statistics are interesting but it remains
>> limited, it becomes very useful only if we can exploit the data via a
>> more powerful tool with charting and gauges.
>>
>> 1/ service=statistic,type=portal,view=portal
>>
>> - gives you the list of portal ids
>> - for a given portal id you can get info like:
>> 1/ average execution time
>> 2/ minimum execution time
>> 3/ maximum execution time
>> 4/ execution count (can be graphed)
>> 5/ throughput, i.e number of request per second (can be graphed)
>>
>> 2/ service=statistic,type=template,view=portal
>>
>> - list of the 10 slowest templates
>> - list of the 10 fastest templates
>> - list of the 10 most used templates
>> - list of all template ids
>> - for each template it is possible to have info about:
>> 1/ average time
>> 2/ min time
>> 3/ max time
>> 4/ execution count
>>
>> 3/ service=SessionRegistry
>>
>> it gives the list of the number of active JCR session in the portal
>> which can be graphed as it gives a good indicator of the load on the
>> server
>>
>> 4/ each cache is registered under the key
>> name="$CACHE_ID",service=cache which gives the usual information
>>
>> there are other few mbeans available but they are less interesting,  
>> so
>> I won't talk much about it.
>>
>> cheers
>>
>> Julien
>> _______________________________________________
>> gatein-dev mailing list
>> gatein-dev at lists.jboss.org
>> https://lists.jboss.org/mailman/listinfo/gatein-dev
>

Wesley Hales
JBoss Portal Developer
whales at redhat.com