The actual call to getter method is only using 2% CPU. Rest 38% is being used within trinidad classes. I am attaching two screenshots to give you more details.
In first screenshot, you can see at the top left corner, total CPU units taken by getProperty are 32391 getProperty calls javax.faces.el.ValueBinding.getValue which calls org.apache.myfaces.el.PropertyResolverImpl.getValue which calls org.apache.myfaces.el.PropertyResolverImpl.getProperty which calls java.lang.reflect.Method.invoke. In second screenshot you can see that Method.invoke is using only 1781 units of CPU. Rest of the time is being spent within trinidad classes. Does this help? Also the rest of trinidad using 45% CPU usage is also highly concerning. Thanks Ravi On Fri, Jan 8, 2010 at 1:47 PM, Jan-Kees van Andel < [email protected]> wrote: > Hey, > > Is it possible that the getProperty indirectly invokes some expensive > computation? For example, do you have lots of logic inside your > getters? > > Regards, > Jan-Kees > > > 2010/1/8 Ravi Kapoor <[email protected]>: > > Hi Matthias, > > > > Here are the details: > > > > Server: Websphere 6.1 > > > > Trinidad version: 1.0.7 (We cant upgrade to 2.0 until we upgrade > websphere > > which will happen in due course. Even then if this issue has not been > > addressed, the problem may exist in 2.0 as well.) > > > > OS: Windows (Even though I am measuring numbers on windows but I do not > > think this is OS specific) > > > > > > Let me know if you need to know anything else. > > > > Regards > > Ravi > > > > > > > > On Fri, Jan 8, 2010 at 1:09 AM, Matthias Wessendorf <[email protected] > >wrote: > > > >> Hello Ravi, > >> > >> some more background would be good, e.g. what version of Trinidad etc. > >> > >> -Matthias > >> > >> On Thu, Jan 7, 2010 at 11:25 PM, Ravi Kapoor <[email protected]> > >> wrote: > >> > Has anybody done performance tests on trinidad application. I have an > >> > application and it appears that it is taking 80-90% of CPU in my > >> > application, thus killing performance. > >> > > >> > We ran load tests and our CPU went to 100% usage. At this point we > >> measured > >> > how much time was being taken by each class/method. Here are some > >> > interesting figures: > >> > > >> > CPU usage by all Trinidad + myfaces classes = 80-90% > >> > Myfaces CPU usage (without trinidad) = 8% (which implies trinidad is > >> taking > >> > 70-80% of CPU) > >> > Total time taken by one method > >> > (org.apache.myfaces.trinidad.bean.FacesBeanImpl.getProperty) = 40% > >> > > >> > Can anybody confirm that they have seen this behavior? > >> > Or if somebody can confirm that this does not happen in their > performance > >> > tests, that should help too. > >> > > >> > Thanks > >> > Ravi > >> > > >> > >> > >> > >> -- > >> Matthias Wessendorf > >> > >> blog: http://matthiaswessendorf.wordpress.com/ > >> sessions: http://www.slideshare.net/mwessendorf > >> twitter: http://twitter.com/mwessendorf > >> > > >
