JSF memory problems

[wildrook]

Hi all,

I develop Richfaces website which supposed to support thousands of visitors. I made some profiling tests and note that JSF (any implementation) + Richfaces consume a LOT OF memory per session.

Is any way to reduce this amount of memory? Is any parameters in richfaces or jsf (I use Sun RI implementation)?

Decreasing com.sun.faces.numberOfViewsInSession parameter in RI implementation helps a lot, but not enough.

Client state I think this is weird in client/server programming concept in general and not work for really loaded site.

Thanks in advance!
Ian

P.S. Another problem is also memory consumption when Richfaces (jsf) renders a page, uses 20-30 Mbytes!!! just only for rendering of one single page, of course this memory lately eliminating by garbage collector, but maybe someone knows any tricks how to boost jsf and richfaces to use less memory?

[wildrook]

I think that I've already have an answer how to use JSF + Richfaces solutions for the sites with many concurrent users.

1. Buy memory, nowdays it is cheap. But I'm one of those who played Doom only on 4 Mbytes and it "flies" comparing with JSF sites on 4Gbytes.

2. Develop a filter+cache that manages org.ajax4jsf.application.AjaxStateHolder objects, in case of many users simply serialize all session objects and save it to the disk. I'm not sure that it will work but I will try to implement in the nearest future.

Any other ideas? I was very suprising that everybody talk about JSF but don't understand that JSF only works with "Hello World" examples or I'm wrong? JSF views, StateHolders and xml parsers really use a lot of memory and cpu: 20-30 Mbytes to send 10Kbytes of rendered page, this is simply shock me.

I will be very gratefull if somebody exaplain me where I mistake. By the way what hardware is used for Richfaces Demo site and what is the average load, concurrent sessions?

[nohacks]

Did you ever find an answer to your memory problem? We have a site that is going to go live soon too...we expect a heavy load of users as well.

Phil

[babazs]

I have the same problem in the end of 2010 year.

Did somebody find any solution for this??

Thank you any answer!!

[ilya_shaikovsky]

some links to start with:

http://www.econsulting.nl/images/pdf/Tuning%20JSF%20Applications-%20J-Spring%202008.pdf

http://www.jsfcentral.com/articles/speed_up_your_jsf_app_1.html

http://www.jsfcentral.com/articles/speed_up_your_jsf_app_2.html