[jira] [Updated] (YARN-9737) Performance degradation, Distributed Opportunistic Scheduling

["Babble Shack (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/YARN-9737?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Babble Shack updated YARN-9737:
-------------------------------
    Summary: Performance degradation, Distributed Opportunistic Scheduling  (was: Performance degradation, distributed opportunistic scheduling)

> Performance degradation, Distributed Opportunistic Scheduling
> -------------------------------------------------------------
>
>                 Key: YARN-9737
>                 URL: https://issues.apache.org/jira/browse/YARN-9737
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: distributed-scheduling, yarn
>    Affects Versions: 3.1.2
>         Environment: OS: Ubuntu 18.04
>  JVM: 1.8.0_212-8u212-b03-0ubuntu1.18.04.1-b03
> 1 * Resource Manager – Intel Core i7-4770 CPU @ 3.40GHz, 16GB Memory, 256GB ssd.
> 37 * Node Managers - Intel Core i7-4770 CPU @ 3.40GHz, 8GB Memory, 256GB ssd. 
> 2 * 3.5 Gb slots per Node Manager.
> yarn-site: [^yarn-site.xml]
> yarn-client-yarn-site: [^yarn-client.yarn-site.xml]
>  
>            Reporter: Babble Shack
>            Priority: Major
>         Attachments: jct_cdf_100j_100t_1500.svg, jct_cdf_100j_50t_1500_with_outliers.svg, jet_boxplot_j100_50t_1500.svg, jet_boxplot_j100_50t_1500_with_outliers.svg, task_throughput_boxplot_100j_50t_1500.svg, yarn-client.yarn-site.xml, yarn-site.xml
>
>
> Opportunistic scheduling is supposed to provide lower scheduling time, and thus higher task throughput and lower job completion times for short jobs/tasks.
> Through my experiments I have found distributed scheduling can degrade performance.
> I ran a gridmix trace of 100 short jobs, each with 50 tasks. Average task run time was 1523ms.
> Findings:
>  * Job completion time, the time take from submitting a job to job completion, may degrade by over 200%
>  [^jct_cdf_100j_100t_1500.svg]
>  [^jct_cdf_100j_50t_1500_with_outliers.svg]
>  * Job execution time may increase by up to 300%
>  [^jet_boxplot_j100_50t_1500.svg]
>  [^jet_boxplot_j100_50t_1500_with_outliers.svg]
>  * Task throughput decreased by 100%
>  ^[^task_throughput_boxplot_100j_50t_1500.svg]^



--
This message was sent by Atlassian JIRA
(v7.6.14#76016)

---------------------------------------------------------------------
To unsubscribe, e-mail: yarn-issues-unsubscribe@hadoop.apache.org
For additional commands, e-mail: yarn-issues-help@hadoop.apache.org