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From Tom van den Berge <...@drillster.com>
Subject Re: How to measure data transfer between data centers?
Date Wed, 04 Dec 2013 19:44:46 GMT
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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