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https://issues.apache.org/jira/browse/AMBARI-3017?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13817771#comment-13817771
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Tom Beerbower commented on AMBARI-3017:
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+1 on the latest patch.
Committed the latest patch on behalf of Myroslav.
> Service metrics 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
> Labels: performance
> Fix For: 1.4.2
>
> Attachments: AMBARI-3017.patch, AMBARI-3017.patch, 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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