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      Hi, I am running standalone instance of Jenkins version 1.514 in Linux. When many selenium tests are run, jenkins becomes very slow and even loading the browser takes a very long time. It has been like this for a long time. I got a heap dump at that time when jenkins was too slow. Can anyone findout what the issue is and let me know if I upgrade to 1.519 this issue will get resolved?
      Also, please let me know if you need any more details.

      Jenkins runs on 4 core processor with 8 GB RAM and 32 bit OS. Also CPU usage goes to 400% when multiple selenium tests are run and Jenkins is very slow.

      After sometime, Jenkins JVM crashed itself generating a log file. I have attached the generated log file also.

      Thanks, Aswini

          [JENKINS-18513] Slowness in Jenkins

          Aswini Rajasekaran created issue -
          Aswini Rajasekaran made changes -
          Description Original: Hi, I am running standalone instance of Jenkins version 1.514 in Linux. When many selenium tests are run, jenkins becomes very slow and even loading the browser takes a very long time. It has been like this for a long time. I got a heap dump at that time when jenkins was too slow. Can anyone findout what the issue is and let me know if I upgrade to 1.519 this issue will get resolved?
          Also, please let me know if you need any more details.
          Thanks, Aswini
          New: Hi, I am running standalone instance of Jenkins version 1.514 in Linux. When many selenium tests are run, jenkins becomes very slow and even loading the browser takes a very long time. It has been like this for a long time. I got a heap dump at that time when jenkins was too slow. Can anyone findout what the issue is and let me know if I upgrade to 1.519 this issue will get resolved?
          Also, please let me know if you need any more details.

          Jenkins runs on 4 core processor with 8 GB RAM and 32 bit OS.

          Thanks, Aswini
          Aswini Rajasekaran made changes -
          Description Original: Hi, I am running standalone instance of Jenkins version 1.514 in Linux. When many selenium tests are run, jenkins becomes very slow and even loading the browser takes a very long time. It has been like this for a long time. I got a heap dump at that time when jenkins was too slow. Can anyone findout what the issue is and let me know if I upgrade to 1.519 this issue will get resolved?
          Also, please let me know if you need any more details.

          Jenkins runs on 4 core processor with 8 GB RAM and 32 bit OS.

          Thanks, Aswini
          New: Hi, I am running standalone instance of Jenkins version 1.514 in Linux. When many selenium tests are run, jenkins becomes very slow and even loading the browser takes a very long time. It has been like this for a long time. I got a heap dump at that time when jenkins was too slow. Can anyone findout what the issue is and let me know if I upgrade to 1.519 this issue will get resolved?
          Also, please let me know if you need any more details.

          Jenkins runs on 4 core processor with 8 GB RAM and 32 bit OS. Also CPU usage goes to 400% when multiple selenium tests are run and Jenkins is very slow.

          Thanks, Aswini
          Aswini Rajasekaran made changes -
          Attachment New: hs_err_pid21945.log [ 23794 ]
          Description Original: Hi, I am running standalone instance of Jenkins version 1.514 in Linux. When many selenium tests are run, jenkins becomes very slow and even loading the browser takes a very long time. It has been like this for a long time. I got a heap dump at that time when jenkins was too slow. Can anyone findout what the issue is and let me know if I upgrade to 1.519 this issue will get resolved?
          Also, please let me know if you need any more details.

          Jenkins runs on 4 core processor with 8 GB RAM and 32 bit OS. Also CPU usage goes to 400% when multiple selenium tests are run and Jenkins is very slow.

          Thanks, Aswini
          New: Hi, I am running standalone instance of Jenkins version 1.514 in Linux. When many selenium tests are run, jenkins becomes very slow and even loading the browser takes a very long time. It has been like this for a long time. I got a heap dump at that time when jenkins was too slow. Can anyone findout what the issue is and let me know if I upgrade to 1.519 this issue will get resolved?
          Also, please let me know if you need any more details.

          Jenkins runs on 4 core processor with 8 GB RAM and 32 bit OS. Also CPU usage goes to 400% when multiple selenium tests are run and Jenkins is very slow.

          After sometime, Jenkins JVM crashed itself generating a log file. I have attached the generated log file also.

          Thanks, Aswini
          Michael Fowler made changes -
          Component/s New: core [ 15593 ]
          Component/s Original: all-changes [ 15911 ]
          Oleg Nenashev made changes -
          Link New: This issue duplicates JENKINS-14362 [ JENKINS-14362 ]

          Oleg Nenashev added a comment -

          According to the thread dump, the issue seems to be a duplicate of JENKINS-14362 (there're multiple deflater threads)

          Oleg Nenashev added a comment - According to the thread dump, the issue seems to be a duplicate of JENKINS-14362 (there're multiple deflater threads)
          Oleg Nenashev made changes -
          Resolution New: Fixed [ 1 ]
          Status Original: Open [ 1 ] New: Resolved [ 5 ]

          Oleg Nenashev added a comment -

          @Aswini
          You use the Monitoring plugin.
          Please provide thread statistics from it if the issue appears again. It will greatly help to find the hanging thread

          Oleg Nenashev added a comment - @Aswini You use the Monitoring plugin. Please provide thread statistics from it if the issue appears again. It will greatly help to find the hanging thread
          R. Tyler Croy made changes -
          Workflow Original: JNJira [ 149820 ] New: JNJira + In-Review [ 193309 ]

            wolfs Stefan Wolf
            aswini_r Aswini Rajasekaran
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              Created:
              Updated:
              Resolved: