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https://issues.apache.org/jira/browse/MESOS-2825?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14741687#comment-14741687
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Yan Xu commented on MESOS-2825:
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Hi [~SEJeff],
I don't think the current use case (filesystem provisioning) for this requires
it to be an abstraction by itself yet. Our {{Subprocess}} allows a [setup
function to be
specified|https://github.com/apache/mesos/blob/05c608f80e3b120302bd2040780ce477677671dc/3rdparty/libprocess/include/process/subprocess.hpp#L240]
where we could call {{ioprio_set}} on Linux.
There is no use case for other systems yet.
> Run heavy disk IO operations at low IO priority
> -----------------------------------------------
>
> Key: MESOS-2825
> URL: https://issues.apache.org/jira/browse/MESOS-2825
> Project: Mesos
> Issue Type: Improvement
> Components: isolation
> Affects Versions: 0.23.0
> Reporter: Ian Downes
> Assignee: Yan Xu
> Priority: Minor
> Labels: twitter
>
> Slave IO operations on large images can be disruptive to tasks, e.g.,
> decompressing, decrypting, hashing, and extracting. Provide option to run
> such operations at a lower IO priority, i.e., at "idle" or by explicitly
> setting the "best effort" priority to less than the tasks', e.g., 0 as the
> lowest best effort priority. All of the existing operations in the Appc
> provisioner are run as Subprocesses.
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