[jboss-user] [JBossCache] - Re: Could this be deadlock when modifying TreeCache

[manik.surtani@jboss.com]

"ramdas" wrote : 
  | Was wondering since i am unable to capture the stats using JMX, was there a way to set a particular log level on the jgroups package without hurting the performance of the existing system. Currently the app does not have any logging enabled for the jgroups category. Was hoping to get some information via logging on the status of the jgroups workings as these threads block.
  | Since all the appservers in our cluster are behaving very similarly, was wondering why FC had to block to syn up senders with receivers. Something here does not sound right. 
  | 

The problem with logging is that it does add a lot of noise to a live system.

So you create your cache instance using a singleton, presumably using new TreeCache() ?

One approach may be:

1)  construct and start the JGroups channel first
2)  then bind the channel to JMX programmatically - see http://wiki.jboss.org/wiki/Wiki.jsp?page=JMX
3)  then construct the cache using the channel - new TreeCache(myChannel);

And then you should see JGroups stats in your jmx-console.


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