From: David Ahern <dsahern@gmail.com>
To: "Алексей Болдырев" <ne-vlezay80@yandex.ru>,
netdev <netdev@vger.kernel.org>
Subject: Re: Low speed MPLS to virtio-net
Date: Sat, 29 Apr 2017 14:50:15 -0600 [thread overview]
Message-ID: <85812f46-8822-fbc4-0ac1-f9a714661462@gmail.com> (raw)
In-Reply-To: <428971493234129@web14g.yandex.ru>
On 4/26/17 1:15 PM, Алексей Болдырев wrote:
> Started MPLS on the branch - Everything was fine. When I tried to run MPLS on a real network of virtual machines, there were problems with the speed:
> root@containers:~# iperf3 -c 10.194.10.2 -B 10.194.10.1 -Z
> Connecting to host 10.194.10.2, port 5201
> [ 4] local 10.194.10.1 port 49533 connected to 10.194.10.2 port 5201
> [ ID] Interval Transfer Bandwidth Retr Cwnd
> [ 4] 0.00-1.00 sec 1018 KBytes 8.34 Mbits/sec 238 5.64 KBytes
> [ 4] 1.00-2.00 sec 1.42 MBytes 11.9 Mbits/sec 373 1.41 KBytes
> [ 4] 2.00-3.00 sec 1.43 MBytes 12.0 Mbits/sec 379 5.64 KBytes
> [ 4] 3.00-4.00 sec 1.43 MBytes 12.0 Mbits/sec 376 5.64 KBytes
> [ 4] 4.00-5.00 sec 1.41 MBytes 11.8 Mbits/sec 375 2.82 KBytes
> [ 4] 5.00-6.00 sec 1.42 MBytes 11.9 Mbits/sec 376 2.82 KBytes
> [ 4] 6.00-7.00 sec 1.42 MBytes 11.9 Mbits/sec 373 5.64 KBytes
> [ 4] 7.00-8.00 sec 1.41 MBytes 11.8 Mbits/sec 372 5.64 KBytes
> [ 4] 8.00-9.00 sec 1.42 MBytes 11.9 Mbits/sec 379 2.82 KBytes
> [ 4] 9.00-10.00 sec 1.42 MBytes 11.9 Mbits/sec 373 5.64 KBytes
> - - - - - - - - - - - - - - - - - - - - - - - - -
> [ ID] Interval Transfer Bandwidth Retr
> [ 4] 0.00-10.00 sec 13.8 MBytes 11.5 Mbits/sec 3614 sender
> [ 4] 0.00-10.00 sec 13.6 MBytes 11.4 Mbits/sec receiver
A picture of your network topology is more helpful than dumping network
config commands.
For this topology:
10.10.10.10
+-----+ +-----+ +-----+
| VM1 |-------| VM2 |-------| VM3 |
+-----+ +-----+ +-----+
push 100 pop 100
I get 4+ Gbps using netperf from VM1 to VM3:
$ netperf -c -C -H 10.10.10.10 -l 10 -t TCP_STREAM
MIGRATED TCP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to
10.10.10.10 () port 0 AF_INET
Recv Send Send Utilization Service
Demand
Socket Socket Message Elapsed Send Recv Send Recv
Size Size Size Time Throughput local remote local
remote
bytes bytes bytes secs. 10^6bits/s % S % S us/KB us/KB
87380 16384 16384 10.01 4377.58 37.69 60.78 1.411 2.275
So your bandwidth above is really low.
I suggest you confirm a good bandwidth without MPLS to make sure the VM
config is proper.
prev parent reply other threads:[~2017-04-29 20:50 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-04-26 19:15 Low speed MPLS to virtio-net Алексей Болдырев
2017-04-29 20:50 ` David Ahern [this message]
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