Hi,
I have updated my application to JSF 1.2 during the last weeks.
Now I did some performance tests and the result has been alarming!
Performance declined by factor 2-4 depending on hardware and actions!!!
Measurements:
I used two different contexts on same Tomcat means identical tomcat config and
JDK.
I started only one of the contexts for each tests run. Backend is also the same.
JMeter was used to fire requests but the difference can be seen by manual
clicks immediately.
Obvious results:
Time is lost in phase render response.
Sample numbers for a single request on a slow notebook in phase render response
(with debug logging):
JSF1.1: 1594ms
JSF1.1: 4766ms
(The numbers are much better without debug logging of course but the factor is
still the same)
Environment:
Tomcat 6.0.20
JDK 1.6.0.18
Updated Libs:
myFaces: 1.1.5 to 1.2.8
tomahawk: 1.1.7 to 12-1.1.9
richfaces: 3.1.5 to 3.3.3Beta1
tiles: 1(struts) to 2.0.5
jstl: 1.1.0 to 1.2
commons-digester: 1.7 to 1.8
oro-2.0.8 to jakarta-oro.jar
Settings:
identical in 1.1 and 1.2:
javax.faces.STATE_SAVING_METHOD=server
org.apache.myfaces.NUMBER_OF_VIEWS_IN_SESSION = 1
org.apache.myfaces.SERIALIZE_STATE_IN_SESSION = false
org.apache.myfaces.COMPRESS_STATE_IN_SESSION=false
1.2 new:
org.apache.myfaces.SECRET added
org.apache.myfaces.USE_ENCRYPTION = false
org.apache.myfaces.CACHE_OLD_VIEWS_IN_SESSION_MODE=off (I patched this in
1.1 and removed the old references)
Questions before I start profiling and probably sink time:
1) Is this typical or expected?
2) Is any new configuration flag added to 1.2 which could have high impact on
performance?
3) Any other hints where to look at?
Michael
