performance issue when using ajax4jsf

[christoph.knecht]

Hi! I'm trying to call a modal popup via ajax when the user clicks on an icon:

<h:form>
<h:graphicImage value="/img/myicon.gif" >
<a:support action="#{myComponent.providePopupData('c1_3|2009-08-10')}"
event="onclick"
onsubmit="#{rich:component('waitpanel')}.show()"
oncomplete="#{rich:component('waitpanel')}.hide(); #{rich:component('popup')}.show()"
reRender="popup"
bypassUpdates="true"
limitToList="true"
ajaxSingle="true"/>
</h:graphicImage>
</h:form>

So far so good. That is this implementation works, but it works very slowly :-( The whole roundtrip requires about 500 ms, but when I time the action method 'providePopupData' it only consumes a few ms. So I'm looking for the bottleneck - any ideas?

Thanks a lot in advance!!

[ilya_shaikovsky]

could you please paste the client side log from a4j:log component to pastebin.com?

[christoph.knecht]

client-side log information can be found here:

http://pastebin.com/m202bdd95

Thanks!

[christoph.knecht]

Additional infos:

To monitor the time consumption on the server-side, I've implemented a JSF pase tracker which provides the following timings:

21:26:12,419 INFO [STDOUT] Phase Tracker: Duration of RESTORE_VIEW 1: 109ms
21:26:12,450 INFO [STDOUT] Phase Tracker: Duration of APPLY_REQUEST_VALUES 2: 0ms
21:26:12,466 INFO [STDOUT] Phase Tracker: Duration of PROCESS_VALIDATIONS 3: 16ms
21:26:12,731 INFO [STDOUT] Phase Tracker: Duration of RENDER_RESPONSE 6: 265ms

Against the background of this measuring, I have embedded the above shown coding into a region component to shorten the render response time:

<a:region renderRegionOnly="true"> ... </a:region>

Indeed, this has a positive impact on the response time:

21:24:07,669 INFO [STDOUT] Phase Tracker: Duration of RESTORE_VIEW 1: 125ms
21:24:07,685 INFO [STDOUT] Phase Tracker: Duration of APPLY_REQUEST_VALUES 2: 0ms
21:24:07,700 INFO [STDOUT] Phase Tracker: Duration of PROCESS_VALIDATIONS 3: 15ms
21:24:07,747 INFO [STDOUT] Phase Tracker: Duration of RENDER_RESPONSE 6: 31ms

But unfortunately this does not solve my problem yet: The measuring is only valid if I use the above shown component pattern only a few times on a page. But for whatever reason, my application uses this pattern umpteen times on the same page. And the response time increases linearly with the number of the region components. For 100 regions I get the following numbers:

21:32:18,580 INFO [STDOUT] Phase Tracker: Duration of RESTORE_VIEW 1: 608ms
21:32:18,611 INFO [STDOUT] Phase Tracker: Duration of APPLY_REQUEST_VALUES 2: 0ms
21:32:18,611 INFO [STDOUT] Phase Tracker: Duration of PROCESS_VALIDATIONS 3: 0ms
21:32:18,782 INFO [STDOUT] Phase Tracker: Duration of RENDER_RESPONSE 6: 171ms

Is it possible to prevent from this correlation between response time and number of region components?

Thanks!