netdev - Re: Weird NET_RX softirq behavior

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Message-ID: <1407476878.3604.0.camel@edumazet-glaptop2.roam.corp.google.com>
Date:	Fri, 08 Aug 2014 07:47:58 +0200
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Jisheng Zhang <jszhang@...vell.com>
Cc:	Dmitry Popov <ixaphire@...tor.net>,
	"davem@...emloft.net" <davem@...emloft.net>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: Weird NET_RX softirq behavior

On Fri, 2014-08-08 at 10:37 +0800, Jisheng Zhang wrote:
> nd and recive 7 packets so far, about 1400bytes. Seems small
> comparing with the CPU1 and CPU2 NET_RX softirq numbers, right?
> 
> Any other possible case?

Multicast loop. Check dev_loopback_xmit() and its callers.


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