Date: Wed, 11 Jan 2017 20:47:31 +0100 From: =?UTF-8?Q?Olivier_Cochard=2DLabb=C3=A9?= <olivier@freebsd.org> To: Sean Bruno <sbruno@freebsd.org> Cc: Matthew Macy <mmacy@nextbsd.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%2BTco-dcoU8EZnDEzgoK-v2Q2=U5GF6ASMSj0kwzd_wB5xig@mail.gmail.com> In-Reply-To: <574a7ac7-4842-9518-8286-a4d89a9f7a27@freebsd.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>
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On Wed, Jan 11, 2017 at 4:17 PM, Sean Bruno <sbruno@freebsd.org> wrote:
>
>
> Olivier:
>
> Give this a quick try. This isn't the correct way to do this, but I
> want to see if I'm on the right path:
>
=E2=80=8Bthanks, it fix the problem, I've got back the 4 queues:=E2=80=8B
=E2=80=8Bigb2: <Intel(R) PRO/1000 PCI-Express Network Driver> port 0x3000-0=
x301f
mem 0xdfea0000-0xdfebffff,0xdff24000-0xdff27fff irq 18 at device 20.0 on
pci0
igb2: attach_pre capping queues at 8
igb2: using 1024 tx descriptors and 1024 rx descriptors
igb2: msix_init qsets capped at 8
igb2: pxm cpus: 4 queue msgs: 9 admincnt: 1
igb2: using 4 rx queues 4 tx queues
igb2: Using MSIX interrupts with 5 vectors
igb2: allocated for 4 tx_queues
igb2: allocated for 4 rx_queues
igb2: Ethernet address: 00:08:a2:09:33:da
igb2: netmap queues/slots: TX 4/1024, RX 4/1024
=E2=80=8B
In forwarding mode, I measure about 10% performance drop with this new
drivers on this hardware:
x head r311848: packets per second
+ head r311849 and BAR patch: packets per second
+--------------------------------------------------------------------------=
+
|++ ++ + xxx x x=
|
| |__M__A____| =
|
| |___AM__| =
|
+--------------------------------------------------------------------------=
+
N Min Max Median Avg Stddev
x 5 924170 943071 927509 931612.1 8096.8269
+ 5 831452 845929.5 840940 838730.5 6413.5602
Difference at 95.0% confidence
-92881.6 +/- 10652.2
-9.96999% +/- 1.07481%
(Student's t, pooled s =3D 7303.85)
Regards,
Olivier
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