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From: Viktor Jevdokimov <Viktor.Jevdokimov@adform.com>
To: "user@cassandra.apache.org" <user@cassandra.apache.org>
Subject: RE: Persistent connection among nodes to communicate and redirect
 request
Thread-Topic: Persistent connection among nodes to communicate and redirect
 request
Thread-Index: AQHNoIDXQIXnwQDTBkeZeVJamXKnKJel35mQ
Date: Tue, 2 Oct 2012 11:26:00 +0000
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9160 is a client port. Nodes are using messaging service on storage_port (7=
000) for intra-node communication.


Best regards / Pagarbiai

Viktor Jevdokimov
Senior Developer

Email: Viktor.Jevdokimov@adform.com
Phone: +370 5 212 3063
Fax: +370 5 261 0453

J. Jasinskio 16C,
LT-01112 Vilnius,
Lithuania


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delete this message and any copies.> -----Original Message-----
> From: Niteesh kumar [mailto:niteesh.k@directi.com]
> Sent: Tuesday, October 02, 2012 12:32
> To: user@cassandra.apache.org
> Subject: Persistent connection among nodes to communicate and redirect
> request
>
> while looking at netstat table i observed that my cluster nodes not using
> persistent connection  to talk among themselves on port 9160 to redirect
> request. I also observed that local write latency is around
> 30-40 microsecond, while its takes around .5 miliseconds if the chosen no=
de
> is not the node responsible for the key for 50K QPS. I think this attribu=
tes to
> connection making time among servers as my servers are on same rack.
>
> how can i configure my servers to use persistent connection on port 9160
> thus exclude connection making time for each request that is redirected..=
.