netdev - Re: small RPS cache for fragments?

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Date:	Mon, 06 Jun 2011 16:49:22 -0600
From:	Chris Friesen <chris.friesen@...band.com>
To:	David Miller <davem@...emloft.net>
CC:	fubar@...ibm.com, rick.jones2@...com, netdev@...r.kernel.org
Subject: Re: small RPS cache for fragments?

On 06/06/2011 03:40 PM, David Miller wrote:
> From: Jay Vosburgh<fubar@...ibm.com>
> Date: Mon, 06 Jun 2011 14:06:09 -0700
>
>> 	Right, the common use case for balance-rr (round robin) is to
>> maximize TCP throughput for one connection, over a set of whatever
>> network devices are available (or are cheap) by striping that connection
>> across multiple interfaces.  The tcp_reordering sysctl is set to some
>> large value so that TCP will deal with the reordering as best it can.
>
> FWIW, I really would never, ever, encourage schemes like this.  Even
> if they do happen to work.

Why not?  And if not then what's the recommended way to handle the above 
scenario?  (Assuming hardware upgrade isn't an option.)

Chris

-- 
Chris Friesen
Software Developer
GENBAND
chris.friesen@...band.com
www.genband.com
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