netdev - Re: [PATCH net-next] tcp: double default TSQ output bytes limit

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Date:	Thu, 04 Jun 2015 01:09:53 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	wei.liu2@...rix.com
Cc:	netdev@...r.kernel.org, stefano.stabellini@...citrix.com,
	george.dunlap@...citrix.com, eric.dumazet@...il.com
Subject: Re: [PATCH net-next] tcp: double default TSQ output bytes limit

From: Wei Liu <wei.liu2@...rix.com>
Date: Wed, 3 Jun 2015 11:10:42 +0100

> Xen virtual network driver has higher latency than a physical NIC.
> Having only 128K as limit for TSQ introduced 30% regression in guest
> throughput.
> 
> This patch raises the limit to 256K. This reduces the regression to 8%.
> This buys us more time to work out a proper solution in the long run.
> 
> Signed-off-by: Wei Liu <wei.liu2@...rix.com>

Applied, thanks.
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