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From "Srimanth Gunturi (JIRA)" <j...@apache.org>
Subject [jira] [Created] (AMBARI-3017) UI's service call latency increases by a factor of 2 or 3 every 20-30 calls.
Date Fri, 23 Aug 2013 18:43:53 GMT
Srimanth Gunturi created AMBARI-3017:
----------------------------------------

             Summary: UI's service call latency increases by a factor of 2 or 3 every 20-30
calls.
                 Key: AMBARI-3017
                 URL: https://issues.apache.org/jira/browse/AMBARI-3017
             Project: Ambari
          Issue Type: Bug
          Components: client
    Affects Versions: 1.4.0
            Reporter: Srimanth Gunturi
            Assignee: Mahadev konar
             Fix For: 1.4.0
         Attachments: servicesGC.png

Every 20-30 calls for service metrics, latency of the next 5 calls are a multiple of 2 or
3. This might be due to garbage collection. But basically in UI, the updates seem to take
longer. 

The call UI makes is
{noformat}
/api/v1/clusters/${cluster}/services?fields=components/ServiceComponentInfo,components/host_components,components/host_components/HostRoles,components/host_components/metrics/jvm/memHeapUsedM,components/host_components/metrics/jvm/memHeapCommittedM,components/host_components/metrics/mapred/jobtracker/trackers_decommissioned,components/host_components/metrics/cpu/cpu_wio,components/host_components/metrics/rpc/RpcQueueTime_avg_time,components/host_components/metrics/flume/flume,components/host_components/metrics/yarn/Queue
{noformat}

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