[ https://issues.jboss.org/browse/AS7-6583?page=com.atlassian.jira.plugin.s... ] Tomas Remes edited comment on AS7-6583 at 2/22/13 6:45 AM: ----------------------------------------------------------- I actually think that both could be helpful. Anyway check the mentioned commit once again and notice the really first change in LoggingExtension class (omitting import stuff) from ContextClassLoaderLogContextSelector to ClassLoaderLogContextSelector. These classes resides in org.jboss.logmanager (1.4.0.Final). Now look at the implementation of getLogContext method in both. I guess this method is the crucial one, because is called pretty often. IMHO the for cycle from this method from ClassLoaderLogContextSelector is the clue. You can also check that in attached jprofiler6 snapshots. For the good version I simply replaced method's implementation with the ContextClassLoaderLogContextSelector's one. The snapshots are taken locally and are corresponding to one Numberguess game. At the end some numbers (time is in microseconds): ||-||-||Total time||Invocations||Average time|| |old|org.jboss.logmanager.ClassLoaderLogContextSelector.getLogContext()|24638|1130|21| |new|org.jboss.logmanager.ClassLoaderLogContextSelector.getLogContext()|424546|1082|392| I am going to verify this once again in big load of 2000 sessions, but I am pretty sure. was (Author: tremes): I actually think that both could be helpful. Anyway check the mentioned commit once again and notice the really first change (omitting import stuff) from ContextClassLoaderLogContextSelector to ClassLoaderLogContextSelector. These classes resides in org.jboss.logmanager (1.4.0.Final). Now look at the implementation of getLogContext method in both. I guess this method is the crucial one, because is called pretty often. IMHO the for cycle from this method from ClassLoaderLogContextSelector is the clue. You can also check that in attached jprofiler6 snapshots. For the good version I simply replaced method's implementation with the ContextClassLoaderLogContextSelector's one. The snapshots are taken locally and are corresponding to one Numberguess game. At the end some numbers (time is in microseconds): ||-||-||Total time||Invocations||Average time|| |old|org.jboss.logmanager.ClassLoaderLogContextSelector.getLogContext()|24638|1130|21| |new|org.jboss.logmanager.ClassLoaderLogContextSelector.getLogContext()|424546|1082|392| I am going to verify this once again in big load of 2000 sessions, but I am pretty sure. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira