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From "T Jake Luciani (JIRA)" <j...@apache.org>
Subject [jira] [Issue Comment Deleted] (CASSANDRA-9766) Bootstrap outgoing streaming speeds are much slower than during repair
Date Wed, 06 Apr 2016 16:45:25 GMT

     [ https://issues.apache.org/jira/browse/CASSANDRA-9766?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

T Jake Luciani updated CASSANDRA-9766:
--------------------------------------
    Comment: was deleted

(was: Perhaps we add a decompression pool so we can offload the work to many cores)

> Bootstrap outgoing streaming speeds are much slower than during repair
> ----------------------------------------------------------------------
>
>                 Key: CASSANDRA-9766
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-9766
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Streaming and Messaging
>         Environment: Cassandra 2.1.2. more details in the pdf attached 
>            Reporter: Alexei K
>              Labels: performance
>             Fix For: 2.1.x
>
>         Attachments: problem.pdf
>
>
> I have a cluster in Amazon cloud , its described in detail in the attachment. What I've
noticed is that we during bootstrap we never go above 12MB/sec transmission speeds and also
those speeds flat line almost like we're hitting some sort of a limit ( this remains true
for other tests that I've ran) however during the repair we see much higher,variable sending
rates. I've provided network charts in the attachment as well . Is there an explanation for
this? Is something wrong with my configuration, or is it a possible bug?



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