netdev - Re: [PATCH] cxgb3: Apply interrupt coalescing settings to all queues

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Message-Id: <20110328.222717.59681471.davem@davemloft.net>
Date:	Mon, 28 Mar 2011 22:27:17 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	divy@...lsio.com
Cc:	anton@...ba.org, netdev@...r.kernel.org
Subject: Re: [PATCH] cxgb3: Apply interrupt coalescing settings to all
 queues

From: Divy Le Ray <divy@...lsio.com>
Date: Mon, 28 Mar 2011 10:41:54 -0700

> On 03/27/2011 07:50 PM, Anton Blanchard wrote:
>>
>>
>> While testing the performance of different receive interrupt
>> coalescing settings on a single stream TCP benchmark, I noticed two
>> very different results. With rx-usecs=50, most of the time a
>> connection would hit 8280 Mbps but once in a while it would hit
>> 9330 Mbps.
>>
>> It turns out we are only applying the interrupt coalescing settings
>> to the first queue and whenever the rx hash would direct us onto
>> that queue we ran faster.
>>
>> With this patch applied and rx-usecs=50, I get 9330 Mbps
>> consistently.
>>
>> Signed-off-by: Anton Blanchard <anton@...ba.org>
> 
> Acked-by: Divy Le Ray <divy@...lsio.com>

Applied, thanks.
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