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From "Stu Hood (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (CASSANDRA-3080) Add throttling for internode streaming
Date Thu, 01 Sep 2011 00:07:10 GMT

     [ https://issues.apache.org/jira/browse/CASSANDRA-3080?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Stu Hood updated CASSANDRA-3080:
--------------------------------

    Attachment: stream-throttling-example.log

Attaching an example log from a stream throttling session (grep 'Stream'). The throttling
is fairly bursty because we send 10 MB chunks, but since these are sub-second 100ms bursts,
I'm not sure its worth worrying about.

> Add throttling for internode streaming
> --------------------------------------
>
>                 Key: CASSANDRA-3080
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-3080
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: Core
>            Reporter: Stu Hood
>            Assignee: Stu Hood
>             Fix For: 1.0
>
>         Attachments: 0001-Extract-throttling-into-a-Throttle-class.txt, 0002-Remove-orphaned-throttling-path.txt,
0003-Add-stream_throughput_outbound_megabits_per_sec-settin.txt, 0004-Add-outbound-stream-throttling.txt,
stream-throttling-example.log
>
>
> Cassandra does (mostly) sequential reads from disk to send data to other nodes, which
means that it is easily possible to stream upwards of 100 MB/s per source node.
> To avoid affecting service, we should add streaming throttling across all streams in
the outbound direction, preferably configurable from JMX, and with `nodetool netstats` integration.

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