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Date:	Wed, 04 Apr 2007 11:58:15 -0400
From:	davef1624@....com
To:	baruch@...en.org
Cc:	shemminger@...ux-foundation.org, netdev@...r.kernel.org
Subject: Re: TCP congestion control for fast, short-distance networks ?

Thanks - so you are suggesting we enable 802.3 flow-control / 
pause-frames?
(it's currently disabled)

-----Original Message-----
From: baruch@...en.org
To: davef1624@....com
Cc: shemminger@...ux-foundation.org; netdev@...r.kernel.org
Sent: Wed, 4 Apr 2007 8:39 AM
Subject: Re: TCP congestion control for fast, short-distance networks ?

  * davef1624@....com <davef1624@....com> [070404 18:29]:
> Hello,
>
> We are currently using both 1 Gb & 10 Gb links, that interconnect 
several
servers that are very *local* to
> each other.
> Typical RTT times range from 0.2 ms - 0.3 ms.
>
> We are currently using TCP reno - is there a more suitable congestion 
control
algorithm for our
> application,
> especially using the 10 Gb links ?
> (Most of the High-Speed TCP algorithms seem suitable for large RTT,
long-distance networks).

I'm not aware of any tests for high speed links with very low RTTs, but
I suspect that the new algorithms will not change much, if the
connections you have are indeed local than the Ethernet pause mechanism
is more effective for the flow control you need.

Baruch
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