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https://issues.apache.org/jira/browse/YARN-8320?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16492301#comment-16492301
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Weiwei Yang commented on YARN-8320:
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[~leftnoteasy], your suggestion makes sense to me, let us see if we can split
this to phases. For basis user scenarios, exclusive mode might be good enough
to start. Will also take a look YARN-7481. And update these in next design doc.
Thanks for the comments !
> [Umbrella] Support CPU isolation for latency-sensitive (LS) service
> -------------------------------------------------------------------
>
> Key: YARN-8320
> URL: https://issues.apache.org/jira/browse/YARN-8320
> Project: Hadoop YARN
> Issue Type: New Feature
> Components: nodemanager
> Reporter: Jiandan Yang
> Priority: Major
> Attachments: CPU-isolation-for-latency-sensitive-services-v1.pdf,
> CPU-isolation-for-latency-sensitive-services-v2.pdf, YARN-8320.001.patch
>
>
> Currently NodeManager uses “cpu.cfs_period_us”, “cpu.cfs_quota_us” and
> “cpu.shares” to isolate cpu resource. However,
> * Linux Completely Fair Scheduling (CFS) is a throughput-oriented scheduler;
> no support for differentiated latency
> * Request latency of services running on container may be frequent shake
> when all containers share cpus, and latency-sensitive services can not afford
> in our production environment.
> So we need more fine-grained cpu isolation.
> Here we propose a solution using cgroup cpuset to binds containers to
> different processors, this is inspired by the isolation technique in [Borg
> system|http://schd.ws/hosted_files/lcccna2016/a7/CAT%20@%20Scale.pdf].
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