[jboss-jira] [JBoss JIRA] Created: (JBVFS-105) Performance enhancement: AbstractVirtualFileHandler refcounts

Wed Apr 15 18:19:22 EDT 2009

Performance enhancement: AbstractVirtualFileHandler refcounts
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                 Key: JBVFS-105
                 URL: https://jira.jboss.org/jira/browse/JBVFS-105
             Project: JBoss VFS
          Issue Type: Patch
      Security Level: Public (Everyone can see)
            Reporter: David Lloyd
            Priority: Trivial
             Fix For: 2.2.0.GA

A minute performance improvement can be had by switching from AtomicInteger to a volatile int field, with the help of a static AtomicIntegerFieldUpdater, since the refcount is read many orders of magnitude more often than it is written (roughly 2 million times on an average JBAS 5.1 startup).

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