From: Eric Dumazet <eric.dumazet@gmail.com>
To: Javier Domingo <javierdo1@gmail.com>
Cc: David Miller <davem@davemloft.net>, netdev@vger.kernel.org
Subject: Re: Softirqs without captured packets
Date: Sat, 09 Feb 2013 17:16:02 -0800 [thread overview]
Message-ID: <1360458962.6696.38.camel@edumazet-glaptop> (raw)
In-Reply-To: <CALZVapn-oF2L1BB855x26XGjzP6wYyT93jcJB0X3TcmFE8AxYA@mail.gmail.com>
On Sat, 2013-02-09 at 21:27 +0100, Javier Domingo wrote:
> Can you tell me something about the traces I introduced?
>
> I tried to insert the trace the cleanest way possible. I patched
> dev.c, in the measurement places and tried to make the module the more
> independent I could. It makes the measure with sched_clock() and in
> each round, it sums up the work done.
>
> I have supposed that that softirq is just for capturing packets, so
> that is why I asked my first question,
Seems pretty easy to understand to me.
A network device receives and transmits packets.
n->poll() call done in net_rx_action() can both :
- Receive packets
- Perform the TX completion for most devices (some of them still
use a hard IRQ driven TX completion path)
The return value is only about receive part.
(The TX completion is not limited by a per round quota)
next prev parent reply other threads:[~2013-02-10 1:16 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-02-08 19:41 Softirqs without captured packets Javier Domingo
2013-02-08 19:54 ` Javier Domingo
2013-02-08 19:57 ` David Miller
2013-02-08 20:02 ` Javier Domingo
2013-02-08 20:15 ` David Miller
2013-02-08 21:22 ` Javier Domingo
2013-02-09 20:27 ` Javier Domingo
2013-02-10 1:16 ` Eric Dumazet [this message]
2013-02-10 3:02 ` Javier Domingo
2013-02-10 8:16 ` Eric Dumazet
[not found] ` <CALZVapm1evE6rOgNkJapu9VboA6OojKGJ-UhRhZ26J0A+k4nmw@mail.gmail.com>
2013-02-22 9:32 ` Javier Domingo
2013-02-22 14:11 ` Eric Dumazet
2013-03-06 17:20 ` Javier Domingo
2013-03-06 19:40 ` David Miller
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