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From Jacob Rhoden <jacob.rho...@me.com>
Subject Re: How to measure data transfer between data centers?
Date Thu, 05 Dec 2013 02:57:37 GMT

http://unix.stackexchange.com/questions/41765/traffic-stats-per-network-port

______________________________
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> On 5 Dec 2013, at 5:44 am, Tom van den Berge <tom@drillster.com> wrote:
> 
> Hi Chris,
> 
> I think streaming is used for repair tasks, bulk loading and that kind of things, but
not for regular replication traffic.
> 
> I think you're right that I should look into network tools. I don't think cassandra can
supply this information.
> 
> Thanks,
> Tom
> 
> 
>> On Wed, Dec 4, 2013 at 6:08 PM, Chris Burroughs <chris.burroughs@gmail.com>
wrote:
>> https://wiki.apache.org/cassandra/Metrics has per node Streaming metrics that include
total bytes/in out.  That is only a small bit of what you want though.
>> 
>> For total DC bandwidth it might be more straightforward to measure this at the router/switch/fancy-network-gear
level.
>> 
>> 
>>> On 12/03/2013 06:25 AM, Tom van den Berge wrote:
>>> Is there a way to know how much data is transferred between two nodes, or
>>> more specifically, between two data centers?
>>> 
>>> I'm especially interested in how much data is being replicated from one
>>> data center to another, to know how much of the available bandwidth is used.
>>> 
>>> 
>>> Thanks,
>>> Tom
> 
> 
> 
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