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Posted to issues@mesos.apache.org by "Simao Reis (JIRA)" <ji...@apache.org> on 2018/10/22 14:23:00 UTC

[jira] [Created] (MESOS-9346) Support for Block I/O latency cgroup controller

Simao Reis created MESOS-9346:
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             Summary: Support for Block I/O latency cgroup controller
                 Key: MESOS-9346
                 URL: https://issues.apache.org/jira/browse/MESOS-9346
             Project: Mesos
          Issue Type: Wish
            Reporter: Simao Reis


Kernel 4.19 release adds a new controller that attempts to guarantee minimum I/O latency targets for cgroups.

As long as everybody is meeting their latency target the controller doesn't do anything, but once a group starts missing its target it will attempt to maintain average IO latencies below the configured latency target, throttling anybody with a higher latency target than the victimized group. For more details see the [documentation|https://git.kernel.org/linus/b351f0c76c3eb94c9ccfb68d0b23899a35e47f27].

This would be useful, for example, to protect etcd workloads running in a Mesos UCR container. Please refer to etcd Disk tuning section in this [link|https://coreos.com/etcd/docs/latest/tuning.html] for more information. 



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