High CPU overhead in JMX operations when many rolled log files exist

Issue

• JMX operations in EAP 6 are slower and consuming more CPU, depending on the size of log directory i.e. value set for ${jboss.server.log.dir}. Below thread is taking time to complete:

  For Windows:

   java.lang.Thread.State: RUNNABLE
        at java.io.WinNTFileSystem.checkAccess(Native Method)
        at java.io.File.canRead(File.java:768)
        at org.jboss.as.logging.LoggingResource$AllowedFilesFilter.accept(LoggingResource.java:274)
        at java.io.File.listFiles(File.java:1291)
        at org.jboss.as.logging.LoggingResource.findFiles(LoggingResource.java:217)
        at org.jboss.as.logging.LoggingResource.getChildrenNames(LoggingResource.java:147)
        at org.jboss.as.logging.LoggingResource.hasReadableFile(LoggingResource.java:203)
        at org.jboss.as.logging.LoggingResource.getChild(LoggingResource.java:98)
        at org.jboss.as.controller.OperationContextImpl.getAuthorizationResource(OperationContextImpl.java:1405)
        at org.jboss.as.controller.OperationContextImpl.getBasicAuthorizationResponse(OperationContextImpl.java:1362)
        at org.jboss.as.controller.OperationContextImpl.authorize(OperationContextImpl.java:1281)
        at org.jboss.as.controller.OperationContextImpl.readResourceFromRoot(OperationContextImpl.java:646)
        at org.jboss.as.controller.OperationContextImpl.readResourceFromRoot(OperationContextImpl.java:632)
        at org.jboss.as.controller.operations.global.ReadResourceDescriptionHandler$ReadResourceDescriptionAccessControlContext.addParentResource(ReadResourceDescriptionHandler.java:786)

For Unix:

   java.lang.Thread.State: RUNNABLE
    at java.io.UnixFileSystem.checkAccess(Native Method)
    at java.io.File.canRead(File.java:768)
    at org.jboss.as.logging.LoggingResource$AllowedFilesFilter.accept(LoggingResource.java:274)
    at java.io.File.listFiles(File.java:1291)
    at org.jboss.as.logging.LoggingResource.findFiles(LoggingResource.java:217)
    at org.jboss.as.logging.LoggingResource.getChildrenNames(LoggingResource.java:147)
    at org.jboss.as.logging.LoggingResource.hasReadableFile(LoggingResource.java:203)
    at org.jboss.as.logging.LoggingResource.requireChild(LoggingResource.java:109)
    at org.jboss.as.controller.OperationContextImpl.requireChild(OperationContextImpl.java:992)
    at org.jboss.as.controller.OperationContextImpl.readResourceFromRoot(OperationContextImpl.java:671)
    at org.jboss.as.controller.OperationContextImpl.readResourceFromRoot(OperationContextImpl.java:632)