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From: Alexei Starovoitov <ast@plumgrid.com>
To: Jesper Dangaard Brouer <brouer@redhat.com>,
	Daniel Borkmann <daniel@iogearbox.net>
Cc: netdev@vger.kernel.org, Eric Dumazet <eric.dumazet@gmail.com>
Subject: Re: Multiqueue pktgen and ingress path (Was: [PATCH v5 2/2] pktgen: introduce xmit_mode '<start_xmit|netif_receive>')
Date: Fri, 08 May 2015 10:00:34 -0700	[thread overview]
Message-ID: <554CEBB2.8040908@plumgrid.com> (raw)
In-Reply-To: <20150508174927.5b1ecdd1@redhat.com>

On 5/8/15 8:49 AM, Jesper Dangaard Brouer wrote:
>>
>> I've added a more plain version of a script, based on yours, below my
>> signature.
>
> Now attached.

thanks for the script! Really useful.
Could you add it to samples/pktgen/ and remove useless and confusing
pktgen.conf-2-1 ?

>> The funny thing now is that scaling does not "happen" as we stall on:
>>     atomic_long_inc(&skb->dev->rx_dropped);
>
> More interesting observations with the mentioned script (now attached).
>
> On my system the scaling stopped a 24Mpps, when I increased the number
> of threads the collective scaling was stuck at 24Mpps.

what was your config to start hitting that drop counter?
We can convert it to per_cpu, but I'm not sure it's worth doing.
If I send normal ip packets they don't go this path. Only
unknown protocol packets suppose to hit it ?

  parent reply	other threads:[~2015-05-08 17:00 UTC|newest]

Thread overview: 38+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-05-01  5:12 [PATCH v3 net-next] pktgen: introduce 'rx' mode Alexei Starovoitov
2015-05-01 16:54 ` Eric Dumazet
2015-05-02  8:46 ` Jesper Dangaard Brouer
2015-05-02  9:44   ` Daniel Borkmann
2015-05-02  9:54     ` Jesper Dangaard Brouer
2015-05-02 10:30       ` Daniel Borkmann
2015-05-02 16:01   ` Alexei Starovoitov
2015-05-02 16:46     ` Jesper Dangaard Brouer
2015-05-02 17:07       ` Alexei Starovoitov
2015-05-05 18:15         ` Jesper Dangaard Brouer
2015-05-05 18:30           ` Alexei Starovoitov
2015-05-05 20:29 ` [PATCH 0/2] pktgen changes Jesper Dangaard Brouer
2015-05-05 20:29   ` [PATCH 1/2] pktgen: adjust flag NO_TIMESTAMP to be more pktgen compliant Jesper Dangaard Brouer
2015-05-05 20:30   ` [PATCH 2/2] pktgen: introduce xmit_mode 'rx_inject' Jesper Dangaard Brouer
2015-05-06  4:33     ` Alexei Starovoitov
2015-05-06  5:24       ` Jesper Dangaard Brouer
2015-05-06 10:17         ` Daniel Borkmann
2015-05-06 11:22           ` Jesper Dangaard Brouer
2015-05-06  5:32     ` Alexander Duyck
2015-05-06  8:44       ` Jesper Dangaard Brouer
2015-05-06 14:35         ` Alexei Starovoitov
2015-05-07 14:34           ` [PATCH v5 0/2] pktgen changes Jesper Dangaard Brouer
2015-05-07 14:34             ` [PATCH v5 1/2] pktgen: adjust flag NO_TIMESTAMP to be more pktgen compliant Jesper Dangaard Brouer
2015-05-07 14:35             ` [PATCH v5 2/2] pktgen: introduce xmit_mode '<start_xmit|netif_receive>' Jesper Dangaard Brouer
2015-05-07 16:28               ` Alexei Starovoitov
2015-05-07 17:11                 ` Daniel Borkmann
2015-05-07 17:16                   ` Alexei Starovoitov
2015-05-07 17:20                     ` Daniel Borkmann
2015-05-08 13:40                   ` Multiqueue pktgen (was: [PATCH v5 2/2] pktgen: introduce xmit_mode '<start_xmit|netif_receive>') Jesper Dangaard Brouer
2015-05-08 15:39                   ` [PATCH v5 2/2] pktgen: introduce xmit_mode '<start_xmit|netif_receive>' Jesper Dangaard Brouer
2015-05-08 15:49                     ` Multiqueue pktgen and ingress path (Was: [PATCH v5 2/2] pktgen: introduce xmit_mode '<start_xmit|netif_receive>') Jesper Dangaard Brouer
2015-05-08 15:56                       ` Eric Dumazet
2015-05-08 16:53                       ` Alexander Duyck
2015-05-08 17:00                       ` Alexei Starovoitov [this message]
2015-05-08 18:21                         ` Alexander Duyck
2015-05-08 15:57                     ` [PATCH v5 2/2] pktgen: introduce xmit_mode '<start_xmit|netif_receive>' Eric Dumazet
2015-05-08 16:50                       ` Alexei Starovoitov
2015-05-10  2:26             ` [PATCH v5 0/2] pktgen changes David Miller

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