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Re: [MirageOS-devel] network performance question
KVM is than not optimized (yet). In which setup is expected best
(network) performance? XEN maybe?
Thanks for instruction about manual bridged tap device creation.
BR Justin
On 10/24/2017 04:02 AM, Takayuki Imada
wrote:
Hi,
Network performance on MirageOS Solo5/ukvm is not optimized
yet, but you can try bridged networking by the following:
(I guess you have a bridge device "virbr0" created by
libvirt)
ip
tuntap add tt0 mode tap
ip
link set dev tt0 up
brctl
addif virbr0 tt0
sudo ./ukvm-bin --net=tt0
iperf_server.ukvm
Kind regards
--
Takayuki Imada
Hi
I just tried to compile MirageOS, and wanted to test
networking performance, to compare regular linux/ubuntu KVM
VM vs. mirageOS:
Linux VM has IP 192.168.122.20:
ping 192.168.122.20
PING 192.168.122.20 (192.168.122.20) 56(84) bytes of
data.
64 bytes from 192.168.122.20: icmp_seq=1 ttl=64
time=0.114 ms
...
20 packets transmitted, 20 received, 0% packet loss,
time 19434ms
rtt min/avg/max/mdev = 0.116/0.157/0.193/0.027 ms
mirage VM has IP 192.168.122.100.
ping 192.168.122.100
PING 192.168.122.100 (192.168.122.100) 56(84) bytes of
data.
64 bytes from 192.168.122.100: icmp_seq=1 ttl=38
time=0.090 ms
...
20 packets transmitted, 20 received, 0% packet loss,
time 19490ms
rtt min/avg/max/mdev = 0.087/0.119/0.169/0.021 ms
So here mirage has lower latency, nice :)
But with iperf server on VM, and client on host:
(mirage iperf is from https://github.com/TImada/mirage_iperf)
ubuntu VM:
iperf -c 192.168.122.20 -t10
------------------------------------------------------------
Client connecting to 192.168.122.20, TCP port 5001
TCP window size: 85.0 KByte (default)
------------------------------------------------------------
[ 3] local 192.168.122.1 port 52674 connected with
192.168.122.20 port 5001
[ ID] Interval Transfer Bandwidth
[ 3] 0.0-10.0 sec 52.9 GBytes 45.4 Gbits/sec
top:
PID USER PR NI VIRT RES SHR S %CPU
%MEM TIME+ COMMAND
4401 qemu 20 0 6038648 2.309g 22968 S 100.0
7.4 43:24.27 qemu-system-x86
4422 root 20 0 0 0 0 R 83.2
0.0 0:22.90 vhost-4401
24759 justin_+ 20 0 165812 1892 1728 S 51.5
0.0 0:03.91 iperf
mirage VM:
sudo ./ukvm-bin --net=tt0 iperf_server.ukvm
justin_cinkelj@jcpc:~/devel/orange$ iperf -c
192.168.122.100 -t10
------------------------------------------------------------
Client connecting to 192.168.122.100, TCP port 5001
TCP window size: 85.0 KByte (default)
------------------------------------------------------------
[ 3] local 192.168.122.101 port 44920 connected with
192.168.122.100 port 5001
[ ID] Interval Transfer Bandwidth
[ 3] 0.0-10.0 sec 2.80 GBytes 2.40 Gbits/sec
top:
PID USER PR NI VIRT RES SHR S %CPU
%MEM TIME+ COMMAND
24788 root 20 0 528708 16148 16064 R 100.0
0.0 0:04.35 ukvm-bin
Now, I guess I'm doing something wrong. I would try
bridged networking with mirage, but I don't know how.
What else could/should I change?
BTW, the tt0 network device was created with:
tunctl -t tt0
ip link set up dev tt0
ip addr add 192.168.122.101/26 dev tt0
Justin
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