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Re: [lvs-users] setting up LVS for maximum incoming FTP throughput?

To: "LinuxVirtualServer.org users mailing list." <lvs-users@xxxxxxxxxxxxxxxxxxxxxx>
Subject: Re: [lvs-users] setting up LVS for maximum incoming FTP throughput?
From: Tomasz Chmielewski <mangoo@xxxxxxxx>
Date: Sat, 28 Aug 2010 04:27:30 +0200
On 28.08.2010 00:46, Joseph Mack NA3T wrote:
> On Fri, 27 Aug 2010, Tomasz Chmielewski wrote:
>
>> I would like to set up LVS to provide maximum possible throughput for
>> _incoming_ FTP traffic (up to 20 Gb/s).
>>
>>
>> With only outgoing traffic, the setup would be easy: just set up
>> everything in DR mode, and any outgoing traffic would go directly to the
>> internet.
>
> a common misconception with tcpip is that its throughput is
> measured in bps. It's a packet delivery system and the rate
> of delivery of packets is independant of the packet size.
> Each 1500byte data packet has to be ACK'ed, so the speed is
> going to be the same whether you're uploading or
> downloading

Not with DR (when you have i.e. 10 Gbit link, 1 Gbit realservers and 1
Gbit directors).


-- 
Tomasz Chmielewski
http://wpkg.org

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