Date: Wed, 28 Sep 2016 22:28:53 +0200 From: Ben RUBSON <ben.rubson@gmail.com> To: FreeBSD Net <freebsd-net@freebsd.org> Subject: Re: netstat counts input traffic twice Message-ID: <D24FF41D-F459-4FCE-8378-1C843DDC4CF8@gmail.com> In-Reply-To: <4f5a88f4-03e7-482f-b963-ab65eeee0136@selasky.org> References: <94953762-4397-476D-AD61-A39914F27938@gmail.com> <6d052c64-2ca2-7839-c297-e764634be648@selasky.org> <AED1E1B1-424E-4932-A7F5-80410505E15C@gmail.com> <4f5a88f4-03e7-482f-b963-ab65eeee0136@selasky.org>
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On 28 Sep 2016, at 18:00, Hans Petter Selasky <hps@selasky.org> wrote:
>
> On 09/28/16 17:48, Ben RUBSON wrote:
>>
>>> On 28 Sep 2016, at 16:01, Hans Petter Selasky <hps@selasky.org> wrote:
>>>
>>> On 09/23/16 19:59, Ben RUBSON wrote:
>>>> netstat -b -I mlxen1
>>>
>>> Hi Ben,
>>>
>>> Does the attached patch make any difference?
>>
>> Hi HPS,
>>
>> I tested your patch, but unfortunately it does not help.
>
> Is this a regression issue from 10.x ?
I booted a 10.3 ISO and made the test, 10.3 does not suffer from the issue :
Here is iperf on sending side :
[ 3] 0.0- 1.0 sec 231 MBytes 1.93 Gbits/sec
[ 3] 1.0- 2.0 sec 660 MBytes 5.53 Gbits/sec
[ 3] 2.0- 3.0 sec 686 MBytes 5.75 Gbits/sec
[ 3] 3.0- 4.0 sec 685 MBytes 5.75 Gbits/sec
[ 3] 4.0- 5.0 sec 688 MBytes 5.77 Gbits/sec
[ 3] 5.0- 6.0 sec 688 MBytes 5.77 Gbits/sec
[ 3] 6.0- 7.0 sec 687 MBytes 5.76 Gbits/sec
[ 3] 7.0- 8.0 sec 686 MBytes 5.75 Gbits/sec
[ 3] 8.0- 9.0 sec 688 MBytes 5.77 Gbits/sec
[ 3] 9.0-10.0 sec 688 MBytes 5.77 Gbits/sec
[ 3] 0.0-10.0 sec 6.24 GBytes 5.36 Gbits/sec
And here is netstat on receiving side :
# netstat -w 1 -i mlxen1
input (Total) output
packets errs idrops bytes packets errs bytes colls
3 0 0 1342564 2 0 242 0
20010 0 0 288125410 9861 0 690494 0
76138 0 0 714913534 37134 0 2599418 0
84279 0 0 720127612 40735 0 2851628 0
84629 0 0 725851168 40776 0 2854428 0
84132 0 0 736770514 40658 0 2846168 0
83584 0 0 717375282 40657 0 2846092 0
83669 0 0 734551794 40825 0 2857858 0
83854 0 0 716303392 40866 0 2860748 0
83944 0 0 730653274 40795 0 2855752 0
84523 0 0 663718362 41136 0 2879616 0
9844 0 0 190720 4769 0 334016 0
Receiving side info :
# uname -a
FreeBSD test 10.3-RELEASE FreeBSD 10.3-RELEASE #0 r297264: Fri Mar 25 02:10:02 UTC 2016
root@releng1.nyi.freebsd.org:/usr/obj/usr/src/sys/GENERIC amd64
# grep -i "mlx.*driver" /var/log/messages
kernel: mlx4_core: Initializing mlx4_core: Mellanox ConnectX VPI driver v2.1.6 (Apr 9 2016)
> Does other network drivers exhibit the same behaviour?
I only run FreeBSD with ConnectX3 NICs, so I can't test other hardware :-/
> With your instructions I should be able to reproduce and fix this issue.
Thank you, and of course feel free to ask again if needed.
Ben
help
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