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https://issues.apache.org/jira/browse/CASSANDRA-9766?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15149333#comment-15149333
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Eric Evans commented on CASSANDRA-9766:
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So if I'm understanding this correctly (and I'm probably not), increasing the
receiving buffer would get more of the data over the wire before blocking on
the read from buffer, decompression, etc (up to however much the buffer was
increased by). Is that right? If so, that wouldn't really help much; That
would seem to imply that processing the compressed data is the bottleneck, and
that the blocking is (rightfully) applying back-pressure to the network-side.
> 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
> Environment: Cassandra 2.1.2. more details in the pdf attached
> Reporter: Alexei K
> 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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