[jboss-user] [JBoss Cache: Core Edition] - Jboss Cache Skews

hannspree do-not-reply at jboss.com
Tue Feb 10 02:27:52 EST 2009


We are in the process of preparing our system to run on several clusters. In order to do this we are currently performing some tests, some of which include JBoss cache.
One of these tests is the following:test is the following

1. Having 2 clustered JBoss instances

2. On each instance we deployed the same web application that all it does is increments a cache value for 1000 times

3. Trigger both process together

Expected outcome : The cache value should be 2000 

Actual outcome : The value we are getting is somewhere around 1500 - 1600, meaning that we are loosing several updates possibly due to skews

Related configurations in replSync-service.xml :

  IsolationLevel - READ_COMMITTED
  CacheMode - REPL_SYNC
  NodeLockingScheme - MVCC
  WriteSkewCheck - true

Software being used : 
  JBoss - jboss-5.0.0.GA
  Jboss Cache - jbosscache-core-3.0.0.GA-all

What might be the problem. Can anybody help us through this ?

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