netdev - Re: Regarding bottlenecks for high speed packet generation

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Message-Id: <20121025.231814.962022530355865788.davem@davemloft.net>
Date:	Thu, 25 Oct 2012 23:18:14 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	adapa.ajith@...il.com
Cc:	danborkmann@...earbox.net, netdev@...r.kernel.org
Subject: Re: Regarding bottlenecks for high speed packet generation

From: Ajith Adapa <adapa.ajith@...il.com>
Date: Fri, 26 Oct 2012 08:19:15 +0530

> Hi,
> 
>> If the driver uses NAPI [1] / the chip supports that, then not. You
>> can observe the hardware / software interrupts via ifpps or watching
>> procfs or some other tools, or simply look at the driver
>> implementation.
>>
>> [1] http://www.linuxfoundation.org/collaborate/workgroups/networking/napi
> 
> But does NAPI comes into picture in case of transmission of packets ?

Reclaim of TX descriptors occurs via NAPI.
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