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  1. mod_cluster
  2. MODCLUSTER-536

List of open files grows steadily during load test through mod_cluster

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Details

    • Bug
    • Status: Closed (View Workflow)
    • Major
    • Resolution: Out of Date
    • 1.3.1.Final
    • None
    • Core / SPIs
    • None

    Description

      I was able to configure wildfly 10 modcluster to work with Apache mod_cluster (1.3.1). However, when I was doing a load test, I found out that the test through web server eventually caused error in wildfly instance and I also saw error log in Apache web server

      The obvious error in wildfly instance is the so-called "java.net.SocketException: Too many files open". When I used the command lsop -u | grep TCP | wc -l, I can see the number grew steadily until the wildfly instance reported the error. This was when I sent requests through web server.

      However, when I sent the requests through wildfly instance (app server) directly, the number did not grow, and the app server can take a lot heavier load without this issue.

      The issue did not happen until many rounds of load tests were executed through web server. If I restart the web server, everything is working fine until I execute many rounds of load tests again

      Attachments

        1. httpd.conf
          23 kB
        2. httpd-mpm.conf
          4 kB
        3. standalone-full-ha-snippet.xml
          8 kB
        4. error_log
          6.43 MB
        5. server.log
          11.72 MB

        Activity

          People

            rhn-engineering-jclere Jean-Frederic Clere
            wwang2018 wayne tech (Inactive)
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            Dates

              Created:
              Updated:
              Resolved: