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Disable JBOSS/Wildfly Scheduled Deployment Scanner  -  I/O performance improvement

  • 1.  Disable JBOSS/Wildfly Scheduled Deployment Scanner  -  I/O performance improvement

    Posted Jul 06, 2018 01:32 PM

    Team,

     

    Bring this tip back to top for review.   

    - Prior notes captured this tip within other performance notes:  Performance Notes for CA Identity Manager (IM) 

     

     

     

    Default installation of JBOSS 6.x+ / Wildfly 8.x+ may leverage a deployment scanner of 5 seconds (5000 millisecond), that will constantly scan for any changes of updated/new jar files.  

     

    However, for CA solutions, any changes will be deployed and the process will likely request that the J2EE server is to be restarted.    I am not aware of any dynamic changes required by CA Solutions, that would leverage this dynamic scan feature by the J2EE tier.

     

    Therefore, we can gain I/O performance for the JBOSS/Wildfly solution, by change the default value of scan-interval to a value less than 1.

     

     

    See notes from JBOSS using the jboss-cli.sh/bat  --gui

    Useful Wildfly/JBOSS CLI Monitoring Scripts 

     

     

     

     

     

     

    Example(s) to change this value:

     

    Using the jboss-cli.sh console

    /subsystem=deployment-scanner/scanner=default/:write-attribute(name=scan-interval,value=-1)

     

    Running via CLI with no userID/password.

    ./jboss-cli.sh --connect  --command="/subsystem=deployment-scanner/scanner=default/:write-attribute(name=scan-interval,value=-1)

     

    Running via CLI with userID and Password (assumed this was pre setup)

    /opt/CA/wildfly-idm/bin/jboss-cli.sh --connect --user=jboss-admin --password=Password01!  --command="/subsystem=deployment-scanner/scanner=default/:write-attribute(name=scan-interval,value=-1)"

     

    Viewing the attribute's value before/after with CLI process

    /opt/CA/wildfly-idm/bin/jboss-cli.sh --connect --user=jboss-admin --password=Password01!  --command="/subsystem=deployment-scanner/scanner=default/:read-attribute(name=scan-interval)"

     

     

     

    Afterwards, restart your J2EE server, and validate if there is a performance gain with startup time, and run&operate times.

     

     

     

     

    Cheers,

     

    Alan



  • 2.  Re: Disable JBOSS/Wildfly Scheduled Deployment Scanner  -  I/O performance improvement

    Posted Jul 26, 2018 03:48 PM

    JBOSS/Wildfly Deployment Error due to timeout.   JBAS015052

     

    If you see the following error message in the iam_im.ear.failed file, this may be due to a longer deployment than the default of 10 minutes (600 seconds) used by the built-in deployment scanner.

     

     

    To address, change two (2) values:

     

    /subsystem=deployment-scanner/scanner=default/:write-attribute(name=deployment-timeout,value=1800)

    /subsystem=deployment-scanner/scanner=default/:write-attribute(name=scan-interval,value=-1)

     

     

     

     

     

    Final State: