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Date:      Wed, 11 Jan 2017 21:34:23 +0100
From:      =?UTF-8?Q?Olivier_Cochard=2DLabb=C3=A9?= <olivier@freebsd.org>
To:        Matthew Macy <mmacy@nextbsd.org>
Cc:        Sean Bruno <sbruno@freebsd.org>, "freebsd-net@freebsd.org" <freebsd-net@freebsd.org>,  "freebsd-current@freebsd.org" <freebsd-current@freebsd.org>
Subject:   Re: HEADS-UP: IFLIB implementations of sys/dev/e1000 em, lem, igb pending
Message-ID:  <CA%2Bq%2BTcpUXXPEQtdMFup6EZzyCKs9Ep%2BnS5SB%2Bfm6bSJSDs34_w@mail.gmail.com>
In-Reply-To: <1598f29d379.ea6360351471.8752933472741761813@nextbsd.org>
References:  <30f21c75-d3a2-edcd-1999-d5ed9f970c06@freebsd.org> <b000a957-8d17-a04d-6275-0d3920aa8a17@freebsd.org> <CA%2Bq%2BTcramTrYgYT-s%2B=aBZzRJV8FmKQqGt=1twPhLBR7AoXkcQ@mail.gmail.com> <1598d97bf2a.c6bcb76838987.6501340920645175463@nextbsd.org> <574a7ac7-4842-9518-8286-a4d89a9f7a27@freebsd.org> <CA%2Bq%2BTco-dcoU8EZnDEzgoK-v2Q2=U5GF6ASMSj0kwzd_wB5xig@mail.gmail.com> <6c6cb534-73c7-464b-8af1-7445a9c0188c@freebsd.org> <1598f29d379.ea6360351471.8752933472741761813@nextbsd.org>

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On Wed, Jan 11, 2017 at 9:13 PM, Matthew Macy <mmacy@nextbsd.org> wrote:

>
>  > Hmmm ... did your old tests do 4 or 8 queues on this hardware?
>  >
>  > Did the old tests run 1024 tx/rx slots or the max 4096?
>
> That's a great point, only having one thread per core could easily accoun=
t
> for this. I'm hoping Sean can make txq !=3D rxq work so that you can have
> 8txqs and 4 rxqs.
>
>
> =E2=80=8BThe netgate RCC-VE 4860 is a 4 cores atom C2558E, and I'm using =
2 of the
4 Gigabit Intel i350 ports.
Lab detail:
https://bsdrp.net/documentation/examples/forwarding_performance_lab_of_a_ne=
tgate_rcc-ve_4860

My tunning are (same for both test):
hw.igb.rxd=3D"2048" (it should be useless now)
hw.igb.txd=3D"2048" (it should be useless now)
hw.em.rxd=3D"2048"
hw.em.txd=3D"2048"
hw.igb.rx_process_limit=3D"-1" (It should be useless now too)
hw.em.rx_process_limit=3D"-1"

dev.igb.2.fc=3D0
dev.igb.3.fc=3D0

I can generate profiling data for you: what kind of data do you want ?



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