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Date:      Wed, 26 Jun 2019 12:44:12 +0200
From:      Christian M <christian.marcos@gmail.com>
To:        Eugene Grosbein <eugen@grosbein.net>
Cc:        freebsd-xen@freebsd.org, freebsd-net@freebsd.org
Subject:   Re: Very slow and inconsistent internal network speed (between, VM's on the same host) for FreeBSD 11.0+ as guest on, XCP-ng/XenServer
Message-ID:  <CAKwR996i6ZJLt4iBFTedDNzPaO2mFt5jz3P6iFM-Y1SJ0pu_wA@mail.gmail.com>
In-Reply-To: <9c377fe7-5546-9e0b-fac9-076dd094cbac@grosbein.net>
References:  <mailman.7.1560945600.15387.freebsd-xen@freebsd.org> <12994df1-f847-ec92-aae8-43a32e59385f@darco.dk> <CAKwR994kQTRfB0R0_WiTYx4pgOHtR-ge7h0vP8NiM_%2B-MBPGGw@mail.gmail.com> <20190625082103.qiiz2cikrauaqlas@MacBook-Air-de-Roger.local> <CAKwR996s9Y_Bea95GOhPkdEJabmJM0r6Qi43gW7_8SXE2ryddA@mail.gmail.com> <b0d72766-e7a9-08f7-ed8f-f407fe1285e6@grosbein.net> <CAKwR996sPR=qCwk0TO=zhy5J8vOPZtowxFQuK0QooF9bRObOrw@mail.gmail.com> <8ec84f75-2100-ff8a-6337-3c955f31da62@grosbein.net> <CAKwR994qWVpY0D8s0n5SOZcY3GzOSV87y7sG0LiMWps3-_ACcg@mail.gmail.com> <d89b2b9a-5005-c9ee-5364-9affff5fd1f5@grosbein.net> <CAKwR995FNv-QjkUQKaHw7Wb2jhA3DoiWzQ7prnA-k56qE8vifw@mail.gmail.com> <9c377fe7-5546-9e0b-fac9-076dd094cbac@grosbein.net>

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Sorry to say, but no. Nothing changed :(

The iperf issue concerns me a bit also:

root@:/usr/home/asdf # iperf3 -c 172.31.16.126
iperf3: error - unable to receive control message: Connection reset by peer
root@:/usr/home/asdf # iperf3 -c 172.31.16.126
Connecting to host 172.31.16.126, port 5201
iperf3: error - unable to initialize stream: Socket is not connected
root@:/usr/home/asdf # iperf3 -c 172.31.16.126
^C- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bitrate         Retr
iperf3: interrupt - the client has terminated
root@:/usr/home/asdf # iperf3 -c 172.31.16.126
Connecting to host 172.31.16.126, port 5201
[  5] local 172.31.16.125 port 23884 connected to 172.31.16.126 port 5201
[ ID] Interval           Transfer     Bitrate         Retr  Cwnd
[  5]   0.00-1.00   sec  6.00 MBytes  50.2 Mbits/sec  217   1.43 KBytes
[  5]   1.00-2.00   sec  26.7 MBytes   224 Mbits/sec  566   1.43 KBytes
[  5]   2.00-3.00   sec  15.6 MBytes   131 Mbits/sec  445   1.43 KBytes
[  5]   3.00-4.00   sec  13.5 MBytes   113 Mbits/sec  453   1.43 KBytes
[  5]   4.00-5.00   sec  13.7 MBytes   115 Mbits/sec  512   1.43 KBytes
[  5]   5.00-6.00   sec  6.51 MBytes  54.6 Mbits/sec  201   1.43 KBytes
[  5]   6.00-7.00   sec  13.5 MBytes   114 Mbits/sec  366   1.43 KBytes
[  5]   7.00-8.00   sec  16.9 MBytes   142 Mbits/sec  325   1.43 KBytes
[  5]   8.00-9.00   sec  24.2 MBytes   203 Mbits/sec  275   1.43 KBytes
[  5]   9.00-10.00  sec  38.8 MBytes   325 Mbits/sec  277   1.43 KBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bitrate         Retr
[  5]   0.00-10.00  sec   175 MBytes   147 Mbits/sec  3637
sender
[  5]   0.00-10.00  sec   175 MBytes   147 Mbits/sec
 receiver

iperf Done.



root@:/usr/home/asdf # iperf3 -s
-----------------------------------------------------------
Server listening on 5201
-----------------------------------------------------------
iperf3: error - unable to receive parameters from client: Connection reset
by peer
-----------------------------------------------------------
Server listening on 5201
-----------------------------------------------------------
Accepted connection from 172.31.16.125, port 21052
^Ciperf3: interrupt - the server has terminated
root@:/usr/home/asdf # iperf3 -s
-----------------------------------------------------------
Server listening on 5201
-----------------------------------------------------------
Accepted connection from 172.31.16.125, port 29365
[  5] local 172.31.16.126 port 5201 connected to 172.31.16.125 port 23884
[ ID] Interval           Transfer     Bitrate
[  5]   0.00-1.00   sec  5.85 MBytes  49.0 Mbits/sec
[  5]   1.00-2.00   sec  26.6 MBytes   223 Mbits/sec
[  5]   2.00-3.00   sec  15.6 MBytes   131 Mbits/sec
[  5]   3.00-4.00   sec  13.5 MBytes   113 Mbits/sec
[  5]   4.00-5.00   sec  13.7 MBytes   115 Mbits/sec
[  5]   5.00-6.00   sec  6.51 MBytes  54.6 Mbits/sec
[  5]   6.00-7.00   sec  13.5 MBytes   114 Mbits/sec
[  5]   7.00-8.00   sec  16.9 MBytes   142 Mbits/sec
[  5]   8.00-9.00   sec  24.1 MBytes   202 Mbits/sec
[  5]   9.00-10.00  sec  38.8 MBytes   325 Mbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bitrate
[  5]   0.00-10.00  sec   175 MBytes   147 Mbits/sec
 receiver
-----------------------------------------------------------
Server listening on 5201
-----------------------------------------------------------

Den ons 26 juni 2019 kl 12:36 skrev Eugene Grosbein <eugen@grosbein.net>:

> 26.06.2019 17:26, Christian M wrote:
>
> > I ran ifconfig xn0 -txcsum on both test VM's, and all incorrect checksum
> disappeared.
>
> [skip]
>
> Data looks good. Did it run better this time?
>
>



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