Using Multiple nodes with same Cookie on single machine

Manjeet.Singh Sardar (AC/EDD) <>
Wed Sep 28 14:42:23 CEST 2005


Hi Fredrick,
You have answered my query.
Regarding effect:I mean we are planning to run approx 50 nodes on a single physical server and the communication is over fast Ethernet 100Mbp/s does this effects the performance i.e. speed since we are communicating simultaneously.

Thanks and Regards
Manjeet

-----Original Message-----
From: Fredrik Thulin [mailto:]
Sent: Wednesday, September 28, 2005 1:45 PM
To: Manjeet.Singh Sardar (AC/EDD)
Cc: Erlang-Questions (E-mail)
Subject: Re: Using Multiple nodes with same Cookie on single machine


On Wednesday 28 September 2005 12.35, Manjeet.Singh Sardar (AC/EDD) 
wrote:
...
> My question is, since we are planning to run different server nodes
> on single machine with same Cookie, does it effects the communication
> or performance of the system.

I assume you mean 'affect', not 'effect'. What do you mean by 'affect'?

Node-to-node communication over the loopback interface is probably a 
tiny bit faster than node-to-node communication over fast ethernet (100 
Mbp/s) or gigabit ethernet (1000 Mbp/s), but only marginally.

> Has anybody tested this type of setup?

Yes, I have several physical servers which run more than one erlang-node 
per server - naturally using the same cookie.

/Fredrik



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