Hi Antonio,
I'm testing the performance of ovpn-dco.
Topology:
iperf client running in Ubuntu 20.04 VM with two cores(intel i7 6700) -
iperf server running Ubuntu 18.04 HP EliteBook with four cores(intel
i5-6300U).
tunnel IP 5.5.5.1
tunnel IP 5.5.5.2
The issue I see is the TP is different in both directions. Is this normal?
I don't see this issue if using the host of VM and the TP is very good
in both directions(~870Mbps).VM should be the bottleneck but I don't
understand why the TP is so much different in both direction.
*1. main application data from Ubuntu 20.04 VM to Ubuntu 18.04*
tony-vm-2004% iperf3 -c 5.5.5.2 -t 15
Connecting to host 5.5.5.2, port 5201
[ 5] local 5.5.5.1 port 55342 connected to 5.5.5.2 port 5201
[ ID] Interval Transfer Bitrate Retr Cwnd
[ 5] 0.00-1.00 sec 37.3 MBytes 313 Mbits/sec 0 427 KBytes
[ 5] 1.00-2.00 sec 33.4 MBytes 280 Mbits/sec 0 427 KBytes
[ 5] 2.00-3.00 sec 35.1 MBytes 294 Mbits/sec 0 427 KBytes
[ 5] 3.00-4.00 sec 34.4 MBytes 289 Mbits/sec 0 457 KBytes
[ 5] 4.00-5.00 sec 33.7 MBytes 283 Mbits/sec 0 457 KBytes
[ 5] 5.00-6.00 sec 34.7 MBytes 291 Mbits/sec 0 457 KBytes
[ 5] 6.00-7.00 sec 33.8 MBytes 284 Mbits/sec 0 457 KBytes
[ 5] 7.00-8.00 sec 33.9 MBytes 285 Mbits/sec 0 457 KBytes
[ 5] 8.00-9.00 sec 34.4 MBytes 288 Mbits/sec 0 457 KBytes
[ 5] 9.00-10.00 sec 33.9 MBytes 284 Mbits/sec 0 457 KBytes
[ 5] 10.00-11.00 sec 34.0 MBytes 285 Mbits/sec 0 457 KBytes
[ 5] 11.00-12.00 sec 31.7 MBytes 266 Mbits/sec 0 457 KBytes
[ 5] 12.00-13.00 sec 30.8 MBytes 259 Mbits/sec 0 457 KBytes
[ 5] 13.00-14.00 sec 33.1 MBytes 278 Mbits/sec 0 911 KBytes
[ 5] 14.00-15.00 sec 33.8 MBytes 283 Mbits/sec 0 911 KBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bitrate Retr
[ 5] 0.00-15.00 sec 508 MBytes 284 Mbits/sec 0 sender
[ 5] 0.00-15.00 sec 505 MBytes 282 Mbits/sec
receiver
iperf Done.
top - 01:39:03 up 42 min, 2 users, load average: 0.62, 0.86, 0.70
Tasks: 112 total, 5 running, 107 sleeping, 0 stopped, 0 zombie
%Cpu(s): 0.2 us, 29.5 sy, 0.0 ni, 49.0 id, 0.2 wa, 0.0 hi, 21.1 si,
0.0 st
MiB Mem : 981.1 total, 461.4 free, 160.2 used, 359.4 buff/cache
MiB Swap: 0.0 total, 0.0 free, 0.0 used. 668.4 avail Mem
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+
COMMAND
1841 root 20 0 0 0 0 R 35.0 0.0 2:51.58
kworker/1:1+ovpn-crypto-wq-tun0
18 root 20 0 0 0 0 R 30.7 0.0 2:18.43
ksoftirqd/1
1904 root 20 0 0 0 0 I 18.0 0.0 0:03.62
kworker/1:2-ovpn-crypto-wq-tun0
1882 root 20 0 0 0 0 R 15.3 0.0 0:46.47
kworker/1:0-ovpn-crypto-wq-tun0
1910 tony 20 0 5900 3156 2736 S 0.7 0.3 0:00.06
iperf3
tony-vm-2004% mpstat -P ALL 2
Linux 5.4.0-54-generic (tony-vm-2004) 11/20/20 _x86_64_ (2
CPU)
01:51:05 CPU %usr %nice %sys %iowait %irq %soft %steal
%guest %gnice %idle
01:51:07 all 0.00 0.00 30.71 0.00 0.00 20.64 0.00
0.00 0.00 48.65
01:51:07 0 0.00 0.00 0.00 0.00 0.00 4.35 0.00
0.00 0.00 95.65
01:51:07 1 0.00 0.00 62.50 0.00 0.00 37.50 0.00
0.00 0.00 0.00
01:51:07 CPU %usr %nice %sys %iowait %irq %soft %steal
%guest %gnice %idle
01:51:09 all 0.24 0.00 29.76 0.00 0.00 21.46 0.00
0.00 0.00 48.54
01:51:09 0 0.48 0.00 0.48 0.00 0.00 4.31 0.00
0.00 0.00 94.74
01:51:09 1 0.00 0.00 60.20 0.00 0.00 39.30 0.00
0.00 0.00 0.50
*2. main application data from Ubuntu 18.04 to Ubuntu 20.04 VM (using
option "-R" of iperf3) *
tony-vm-2004% iperf3 -c 5.5.5.2 -t 15 -R
Connecting to host 5.5.5.2, port 5201
Reverse mode, remote host 5.5.5.2 is sending
[ 5] local 5.5.5.1 port 55354 connected to 5.5.5.2 port 5201
[ ID] Interval Transfer Bitrate
[ 5] 0.00-1.00 sec 56.7 MBytes 476 Mbits/sec
[ 5] 1.00-2.00 sec 65.6 MBytes 551 Mbits/sec
[ 5] 2.00-3.00 sec 68.1 MBytes 572 Mbits/sec
[ 5] 3.00-4.00 sec 72.8 MBytes 611 Mbits/sec
[ 5] 4.00-5.00 sec 67.3 MBytes 564 Mbits/sec
[ 5] 5.00-6.00 sec 82.0 MBytes 688 Mbits/sec
[ 5] 6.00-7.00 sec 88.0 MBytes 738 Mbits/sec
[ 5] 7.00-8.00 sec 92.1 MBytes 773 Mbits/sec
[ 5] 8.00-9.00 sec 94.7 MBytes 794 Mbits/sec
[ 5] 9.00-10.00 sec 98.4 MBytes 826 Mbits/sec
[ 5] 10.00-11.00 sec 93.0 MBytes 780 Mbits/sec
[ 5] 11.00-12.00 sec 92.1 MBytes 773 Mbits/sec
[ 5] 12.00-13.00 sec 90.8 MBytes 762 Mbits/sec
[ 5] 13.00-14.00 sec 95.0 MBytes 797 Mbits/sec
[ 5] 14.00-15.00 sec 96.0 MBytes 806 Mbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bitrate Retr
[ 5] 0.00-15.00 sec 1.23 GBytes 703 Mbits/sec 891 sender
[ 5] 0.00-15.00 sec 1.22 GBytes 701 Mbits/sec
receiver
iperf Done.
top - 01:54:15 up 57 min, 2 users, load average: 0.39, 0.19, 0.31
Tasks: 111 total, 3 running, 108 sleeping, 0 stopped, 0 zombie
%Cpu(s): 0.7 us, 25.7 sy, 0.0 ni, 40.0 id, 0.0 wa, 0.0 hi, 33.6 si,
0.0 st
MiB Mem : 981.1 total, 459.2 free, 162.5 used, 359.4 buff/cache
MiB Swap: 0.0 total, 0.0 free, 0.0 used. 666.2 avail Mem
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+
COMMAND
1904 root 20 0 0 0 0 I 82.7 0.0 0:18.91
kworker/1:2-ovpn-crypto-wq-tun0
1676 root 20 0 0 0 0 I 17.0 0.0 0:15.25
kworker/0:0-events
18 root 20 0 0 0 0 S 3.0 0.0 2:25.88
ksoftirqd/1
1923 root 20 0 0 0 0 I 1.0 0.0 0:06.81
kworker/1:3-ovpn-crypto-wq-tun0
1924 root 20 0 0 0 0 I 0.7 0.0 0:00.39
kworker/0:1-ata_sff
tony-vm-2004% mpstat -P ALL 2
Linux 5.4.0-54-generic (tony-vm-2004) 11/20/20 _x86_64_ (2
CPU)
01:56:07 CPU %usr %nice %sys %iowait %irq %soft %steal
%guest %gnice %idle
01:56:09 all 0.53 0.00 28.04 0.00 0.00 28.31 0.00
0.00 0.00 43.12
01:56:09 0 1.12 0.00 6.18 0.00 0.00 1.12 0.00
0.00 0.00 91.57
01:56:09 1 0.00 0.00 47.50 0.00 0.00 52.50 0.00
0.00 0.00 0.00
01:56:09 CPU %usr %nice %sys %iowait %irq %soft %steal
%guest %gnice %idle
01:56:11 all 0.53 0.00 25.66 0.26 0.00 32.28 0.00
0.00 0.00 41.27
01:56:11 0 1.12 0.00 8.43 0.56 0.00 2.81 0.00
0.00 0.00 87.08
01:56:11 1 0.00 0.00 41.00 0.00 0.00 58.50 0.00
0.00 0.00 0.50
Tony
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