Messages in this thread | | | Date | Fri, 8 Aug 2014 10:37:34 +0800 | From | Jisheng Zhang <> | Subject | Re: Weird NET_RX softirq behavior |
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Hi Dmitry,
On Thu, 7 Aug 2014 07:18:13 -0700 Dmitry Popov <ixaphire@qrator.net> wrote:
> On Thu, 7 Aug 2014 17:10:50 +0800 > Jisheng Zhang <jszhang@marvell.com> wrote: > > > 2. only one netdev in the system: eth0. > > There should also be lo (loopback) at least.
Yep, I forget that ;)
> > > 4. But NET_RX seems abnormal > > ~ # cat /proc/softirqs > > CPU0 CPU1 CPU2 CPU3 > > NET_RX: 445587 322 983 0 > > > > I'm expecting NET_RX under CPU1, 2, 3 should be zero. Any suggestions > > about this abnormal behavior? > > Do you have any loopback traffic? It could be handled by CPU1/2 explaining > non-zero NET_RX counters.
Yes. lo only send 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?
Thanks for your reply, Jisheng
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