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From "Srimanth Gunturi (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (AMBARI-3086) Services API call with metrics takes 30% longer with all services started
Date Wed, 04 Sep 2013 00:25:51 GMT

     [ https://issues.apache.org/jira/browse/AMBARI-3086?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Srimanth Gunturi updated AMBARI-3086:
-------------------------------------

    Attachment: Screen Shot 2013-09-03 at 5.21.43 PM.png
    
> Services API call with metrics takes 30% longer with all services started
> -------------------------------------------------------------------------
>
>                 Key: AMBARI-3086
>                 URL: https://issues.apache.org/jira/browse/AMBARI-3086
>             Project: Ambari
>          Issue Type: Task
>          Components: controller
>    Affects Versions: 1.4.0
>            Reporter: Srimanth Gunturi
>              Labels: performance
>         Attachments: Screen Shot 2013-09-03 at 5.21.43 PM.png
>
>
> I stopped all the services and started invoking the /services endpoint. While that was
looping, I invoked the 'Start all services' call. The time being taken by the same call increased
now by over 30%.
> The exact /services call made was 
> {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}
> Time measurements in milliseconds:
> {noformat}
> /services	All Stopped	All Started
> Total Time	2100.704545	2926.313725
> Latency Time	2048.295455	2838.764706
> Transfer Time	52.40909091	87.54901961
> Data size (bytes)	825555	1371548
> {noformat}

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