From: David Miller <davem@davemloft.net>
To: divy@chelsio.com
Cc: anton@samba.org, netdev@vger.kernel.org
Subject: Re: [PATCH] cxgb3: Apply interrupt coalescing settings to all queues
Date: Mon, 28 Mar 2011 22:27:17 -0700 (PDT) [thread overview]
Message-ID: <20110328.222717.59681471.davem@davemloft.net> (raw)
In-Reply-To: <4D90C862.2080207@chelsio.com>
From: Divy Le Ray <divy@chelsio.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@samba.org>
>
> Acked-by: Divy Le Ray <divy@chelsio.com>
Applied, thanks.
prev parent reply other threads:[~2011-03-29 5:27 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-03-28 2:50 [PATCH] cxgb3: Apply interrupt coalescing settings to all queues Anton Blanchard
2011-03-28 17:41 ` Divy Le Ray
2011-03-29 5:27 ` David Miller [this message]
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