From: Jesper Dangaard Brouer <brouer@redhat.com>
To: Alexei Starovoitov <alexei.starovoitov@gmail.com>
Cc: Eric Dumazet <eric.dumazet@gmail.com>,
Brenden Blanco <bblanco@plumgrid.com>,
davem@davemloft.net, netdev@vger.kernel.org, tom@herbertland.com,
Or Gerlitz <ogerlitz@mellanox.com>,
daniel@iogearbox.net, john.fastabend@gmail.com,
brouer@redhat.com
Subject: Re: [RFC PATCH 4/5] mlx4: add support for fast rx drop bpf program
Date: Mon, 4 Apr 2016 16:57:01 +0200 [thread overview]
Message-ID: <20160404165701.2a25a17a@redhat.com> (raw)
In-Reply-To: <20160402024710.GA59703@ast-mbp.thefacebook.com>
On Fri, 1 Apr 2016 19:47:12 -0700 Alexei Starovoitov <alexei.starovoitov@gmail.com> wrote:
> My guess we're hitting 14.5Mpps limit for empty bpf program
> and for program that actually looks into the packet because we're
> hitting 10G phy limit of 40G nic. Since physically 40G nic
> consists of four 10G phys. There will be the same problem
> with 100G and 50G nics. Both will be hitting 25G phy limit.
> We need to vary packets somehow. Hopefully Or can explain that
> bit of hw design.
> Jesper's experiments with mlx4 showed the same 14.5Mpps limit
> when sender blasting the same packet over and over again.
That is an interesting observation Alexei, and could explain the pps limit
I hit on 40G, with single flow testing. AFAIK 40G is 4x 10G PHYs, and
100G is 4x 25G PHYs.
I have a pktgen script that tried to avoid this pitfall. By creating a
new flow per pktgen kthread. I call it "pktgen_sample05_flow_per_thread.sh"[1]
[1] https://github.com/netoptimizer/network-testing/blob/master/pktgen/pktgen_sample05_flow_per_thread.sh
--
Best regards,
Jesper Dangaard Brouer
MSc.CS, Principal Kernel Engineer at Red Hat
Author of http://www.iptv-analyzer.org
LinkedIn: http://www.linkedin.com/in/brouer
next prev parent reply other threads:[~2016-04-04 14:57 UTC|newest]
Thread overview: 62+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-04-02 1:21 [RFC PATCH 0/5] Add driver bpf hook for early packet drop Brenden Blanco
2016-04-02 1:21 ` [RFC PATCH 1/5] bpf: add PHYS_DEV prog type for early driver filter Brenden Blanco
2016-04-02 16:39 ` Tom Herbert
2016-04-03 7:02 ` Brenden Blanco
2016-04-04 22:07 ` Thomas Graf
2016-04-05 8:19 ` Jesper Dangaard Brouer
2016-04-04 8:49 ` Daniel Borkmann
2016-04-04 13:07 ` Jesper Dangaard Brouer
2016-04-04 13:36 ` Daniel Borkmann
2016-04-04 14:09 ` Tom Herbert
2016-04-04 15:12 ` Jesper Dangaard Brouer
2016-04-04 15:29 ` Brenden Blanco
2016-04-04 16:07 ` John Fastabend
2016-04-04 16:17 ` Brenden Blanco
2016-04-04 20:00 ` Alexei Starovoitov
2016-04-04 22:04 ` Thomas Graf
2016-04-05 2:25 ` Alexei Starovoitov
2016-04-05 8:11 ` Jesper Dangaard Brouer
2016-04-05 9:29 ` Jesper Dangaard Brouer
2016-04-05 22:06 ` Alexei Starovoitov
2016-04-04 14:33 ` Eric Dumazet
2016-04-04 15:18 ` Edward Cree
2016-04-02 1:21 ` [RFC PATCH 2/5] net: add ndo to set bpf prog in adapter rx Brenden Blanco
2016-04-02 1:21 ` [RFC PATCH 3/5] rtnl: add option for setting link bpf prog Brenden Blanco
2016-04-02 1:21 ` [RFC PATCH 4/5] mlx4: add support for fast rx drop bpf program Brenden Blanco
2016-04-02 2:08 ` Eric Dumazet
2016-04-02 2:47 ` Alexei Starovoitov
2016-04-04 14:57 ` Jesper Dangaard Brouer [this message]
2016-04-04 15:22 ` Eric Dumazet
2016-04-04 18:50 ` Alexei Starovoitov
2016-04-05 14:15 ` Or Gerlitz
2016-04-06 4:05 ` Brenden Blanco
2016-04-03 6:15 ` Brenden Blanco
2016-04-05 2:20 ` Brenden Blanco
2016-04-05 2:44 ` Eric Dumazet
2016-04-05 18:59 ` Eran Ben Elisha
2016-04-02 8:23 ` Jesper Dangaard Brouer
2016-04-03 6:11 ` Brenden Blanco
2016-04-04 18:27 ` Alexei Starovoitov
2016-04-05 6:04 ` Jesper Dangaard Brouer
2016-04-02 18:40 ` Johannes Berg
2016-04-03 6:38 ` Brenden Blanco
2016-04-04 7:35 ` Johannes Berg
2016-04-04 9:57 ` Daniel Borkmann
2016-04-04 18:46 ` Alexei Starovoitov
2016-04-04 21:01 ` Daniel Borkmann
2016-04-05 1:17 ` Alexei Starovoitov
2016-04-04 8:33 ` Jesper Dangaard Brouer
2016-04-04 9:22 ` Daniel Borkmann
2016-04-02 1:21 ` [RFC PATCH 5/5] Add sample for adding simple drop program to link Brenden Blanco
2016-04-06 19:48 ` Jesper Dangaard Brouer
2016-04-06 20:01 ` Jesper Dangaard Brouer
2016-04-06 23:11 ` Alexei Starovoitov
2016-04-06 20:03 ` Daniel Borkmann
2016-04-02 16:47 ` [RFC PATCH 0/5] Add driver bpf hook for early packet drop Tom Herbert
2016-04-03 5:41 ` Brenden Blanco
2016-04-04 7:48 ` Jesper Dangaard Brouer
2016-04-04 18:10 ` Alexei Starovoitov
2016-04-02 18:41 ` Johannes Berg
2016-04-02 22:57 ` Tom Herbert
2016-04-03 2:28 ` Lorenzo Colitti
2016-04-04 7:37 ` Johannes Berg
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