Hi, I'm facing a speed problem with openvpn. I have a VPS server with a 1gbit link from scaleway and I also have a 1gbit fiber optic connection frim my ISP. Without any vpn, the server can output at least at 700 mbit, as show the iperf3 test result : [code] $ iperf3 -c 4.testdebit.info -i 1 -Z Connecting to host 4.testdebit.info, port 5201 [ 4] local YYY.YYY.YYY.YYY port 47877 connected to 89.84.127.61 port 5201 [ ID] Interval Transfer Bandwidth Retr Cwnd [ 4] 0.00-1.00 sec 88.8 MBytes 745 Mbits/sec 42 201 KBytes [ 4] 1.00-2.00 sec 89.0 MBytes 746 Mbits/sec 19 222 KBytes [ 4] 2.00-3.00 sec 89.5 MBytes 751 Mbits/sec 22 277 KBytes [ 4] 3.00-4.00 sec 87.4 MBytes 733 Mbits/sec 24 211 KBytes [ 4] 4.00-5.00 sec 90.0 MBytes 755 Mbits/sec 78 204 KBytes [ 4] 5.00-6.00 sec 87.1 MBytes 731 Mbits/sec 4 274 KBytes [ 4] 6.00-7.00 sec 88.1 MBytes 739 Mbits/sec 20 246 KBytes [ 4] 7.00-8.00 sec 87.5 MBytes 734 Mbits/sec 55 194 KBytes [ 4] 8.00-9.00 sec 88.3 MBytes 741 Mbits/sec 2 273 KBytes [ 4] 9.00-10.00 sec 88.7 MBytes 744 Mbits/sec 8 270 KBytes - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bandwidth Retr [ 4] 0.00-10.00 sec 884 MBytes 742 Mbits/sec 274 sender [ 4] 0.00-10.00 sec 883 MBytes 740 Mbits/sec receiver [/code] If I do the same test from my vps server to my home, I get the almost the same results (but with a lot of retries packets) : [code]$ iperf3 -c $home -i 1 -Z Connecting to host XXX.XXX.XXX.XXX, port 5201 [ 4] local YYY.YYY.YYY.YYY port 46157 connected to XXX.XXX.XXX.XXX port 5201 [ ID] Interval Transfer Bandwidth Retr Cwnd [ 4] 0.00-1.00 sec 68.2 MBytes 572 Mbits/sec 2867 262 KBytes [ 4] 1.00-2.00 sec 83.9 MBytes 703 Mbits/sec 1714 314 KBytes [ 4] 2.00-3.00 sec 77.1 MBytes 645 Mbits/sec 2679 370 KBytes [ 4] 3.00-4.00 sec 82.5 MBytes 693 Mbits/sec 578 263 KBytes [ 4] 4.00-5.00 sec 84.7 MBytes 711 Mbits/sec 0 291 KBytes [ 4] 5.00-6.00 sec 76.8 MBytes 644 Mbits/sec 4456 549 KBytes [ 4] 6.00-7.01 sec 57.1 MBytes 477 Mbits/sec 3538 348 KBytes [ 4] 7.01-8.00 sec 88.8 MBytes 749 Mbits/sec 5 283 KBytes [ 4] 8.00-9.00 sec 87.5 MBytes 734 Mbits/sec 2 225 KBytes [ 4] 9.00-10.00 sec 86.2 MBytes 723 Mbits/sec 0 259 KBytes - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bandwidth Retr [ 4] 0.00-10.00 sec 793 MBytes 665 Mbits/sec 15839 sender [ 4] 0.00-10.00 sec 789 MBytes 662 Mbits/sec receiver iperf Done.[/code] So everything seems to be ok without openvpn. I then start an openvpn tunnel [b]without encryption[/b], neither fragmentation and using 16000 bytes for mtu value (1500 gives me bad result, from 6000 to 48000 it doesn't change anything). Server : [code] $ sudo openvpn --verb 4 --dev tun --proto udp --port 11000 --ifconfig 10.200.0.1 10.200.0.2 --cipher none --auth none --fragment 0 --mssfix 0 --tun-mtu 16000 [/code] Client : [code] $ sudo openvpn --verb 4 --dev tun --proto udp --port 11000 --ifconfig 10.200.0.2 10.200.0.1 --cipher none --auth none --remote YYY.YYY.YYY.YYY --fragment 0 --mssfix 0 --tun-mtu 160 [/code] And when I try the same iperf3 test, this time using the tunnel local ip address, results are showing [b][color=#FF0000]50% penalty[/color][/b] : [code]$ iperf3 -c 10.200.0.2 -i 1 -Z Connecting to host 10.200.0.2, port 5201 [ 4] local 10.200.0.1 port 34403 connected to 10.200.0.2 port 5201 [ ID] Interval Transfer Bandwidth Retr Cwnd [ 4] 0.00-1.00 sec 43.0 MBytes 360 Mbits/sec 8 841 KBytes [ 4] 1.00-2.00 sec 38.8 MBytes 325 Mbits/sec 2 716 KBytes [ 4] 2.00-3.00 sec 36.2 MBytes 304 Mbits/sec 2 623 KBytes [ 4] 3.00-4.00 sec 37.5 MBytes 315 Mbits/sec 7 576 KBytes [ 4] 4.00-5.00 sec 35.0 MBytes 294 Mbits/sec 0 639 KBytes [ 4] 5.00-6.00 sec 36.2 MBytes 304 Mbits/sec 0 701 KBytes [ 4] 6.00-7.00 sec 38.8 MBytes 325 Mbits/sec 2 607 KBytes [ 4] 7.00-8.00 sec 36.2 MBytes 304 Mbits/sec 0 701 KBytes [ 4] 8.00-9.00 sec 37.5 MBytes 315 Mbits/sec 0 748 KBytes [ 4] 9.00-10.00 sec 36.2 MBytes 304 Mbits/sec 1 592 KBytes - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bandwidth Retr [ 4] 0.00-10.00 sec 375 MBytes 315 Mbits/sec 22 sender [ 4] 0.00-10.00 sec 373 MBytes 313 Mbits/sec receiver [/code] That's kind of sucks :( For the record, the vps server has this cpu : VIA Nano processor U2250 (1.6GHz Capable) The host is a mac mini with an Intel(R) Core(TM) i5-3210M CPU @ 2.50GHz At least also tried all the same tests from another vps server with an Intel Atom cpu, and the resulsts were identical. There must be something I'm missing, because on this [url=https://community.openvpn.net/openvpn/wiki/Gigabit_Networks_Linux]wiki page[/url] they can easily get gbit speed without encryption. Any help is highly appreciated.

[quote="aixki"]--remote YYY.YYY.YYY.YYY[/quote]If this is an public internet address then I doubt you will get 1gbit ..

I've found a way to fix it !!! First, for smoe reasons, I had to replace proto udp by proto tcp-client/tcp-server. I also needed to add --sndbuf 393216 --rcvbuf 393216 for client and --sndbuf 0 --rcvbuf 0 for server. I don't understand why tcp gives me better performance than udp, maybe there's some firewall rules on my ISP for non fragmented udp datagrams that throttle the bandwidth, who knows... Anyway, here are the command lines. [b]server:[/b] [code] # openvpn --dev tun --proto tcp-server --port 11000 --ifconfig 10.200.0.1 10.200.0.2 --cipher none --auth none --fragment 0 --mssfix 0 --tun-mtu 48000 --sndbuf 0 --rcvbuf 0 [/code] [b]client:[/b] [code] # openvpn --dev tun --proto tcp-client --port 11000 --ifconfig 10.200.0.2 10.200.0.1 --cipher none --auth none --remote YYY.YYY.YYY.YYY --fragment 0 --mssfix 0 --tun-mtu 48000 --sndbuf 393216 --rcvbuf 393216[/code] iperf3 test result: [code]# iperf3 -c 10.200.0.2 -i 1 -Z -p 5201 Connecting to host 10.200.0.2, port 5201 [ 4] local 10.200.0.1 port 59332 connected to 10.200.0.2 port 5201 [ ID] Interval Transfer Bandwidth Retr Cwnd [ 4] 0.00-1.00 sec 107 MBytes 894 Mbits/sec 0 3.16 MBytes [ 4] 1.00-2.00 sec 108 MBytes 902 Mbits/sec 0 3.16 MBytes [ 4] 2.00-3.00 sec 105 MBytes 881 Mbits/sec 0 3.16 MBytes [ 4] 3.00-4.00 sec 108 MBytes 902 Mbits/sec 0 3.16 MBytes [ 4] 4.00-5.00 sec 106 MBytes 891 Mbits/sec 0 3.16 MBytes [ 4] 5.00-6.00 sec 108 MBytes 902 Mbits/sec 0 3.16 MBytes [ 4] 6.00-7.00 sec 110 MBytes 923 Mbits/sec 0 3.16 MBytes [ 4] 7.00-8.00 sec 106 MBytes 891 Mbits/sec 0 3.16 MBytes [ 4] 8.00-9.00 sec 97.5 MBytes 818 Mbits/sec 0 3.16 MBytes [ 4] 9.00-10.00 sec 72.5 MBytes 608 Mbits/sec 0 3.16 MBytes - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bandwidth Retr [ 4] 0.00-10.00 sec 1.00 GBytes 861 Mbits/sec 0 sender [ 4] 0.00-10.00 sec 1.00 GBytes 861 Mbits/sec receiver[/code]

Well .. thanks for the feedback 8-) [quote="aixki"]You don't trust me saying these server and client are gigabit connected[/quote]Typical internet connections do not give 1gb up and 1gb down they would be more asymmetric .. eg: 1gb down / 1mb up .. that was why I asked .. But yours is obviously better than most.

Unable to get 1gbit speed, even w/o encryption

aixki

Hi,

I'm facing a speed problem with openvpn. I have a VPS server with a 1gbit link from scaleway and I also have a 1gbit fiber optic connection frim my ISP.

Without any vpn, the server can output at least at 700 mbit, as show the iperf3 test result :

$ iperf3 -c 4.testdebit.info  -i 1 -Z
Connecting to host 4.testdebit.info, port 5201
[  4] local YYY.YYY.YYY.YYY port 47877 connected to 89.84.127.61 port 5201
[ ID] Interval           Transfer     Bandwidth       Retr  Cwnd
[  4]   0.00-1.00   sec  88.8 MBytes   745 Mbits/sec   42    201 KBytes
[  4]   1.00-2.00   sec  89.0 MBytes   746 Mbits/sec   19    222 KBytes
[  4]   2.00-3.00   sec  89.5 MBytes   751 Mbits/sec   22    277 KBytes
[  4]   3.00-4.00   sec  87.4 MBytes   733 Mbits/sec   24    211 KBytes
[  4]   4.00-5.00   sec  90.0 MBytes   755 Mbits/sec   78    204 KBytes
[  4]   5.00-6.00   sec  87.1 MBytes   731 Mbits/sec    4    274 KBytes
[  4]   6.00-7.00   sec  88.1 MBytes   739 Mbits/sec   20    246 KBytes
[  4]   7.00-8.00   sec  87.5 MBytes   734 Mbits/sec   55    194 KBytes
[  4]   8.00-9.00   sec  88.3 MBytes   741 Mbits/sec    2    273 KBytes
[  4]   9.00-10.00  sec  88.7 MBytes   744 Mbits/sec    8    270 KBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bandwidth       Retr
[  4]   0.00-10.00  sec   884 MBytes   742 Mbits/sec  274             sender
[  4]   0.00-10.00  sec   883 MBytes   740 Mbits/sec                  receiver

If I do the same test from my vps server to my home, I get the almost the same results (but with a lot of retries packets) :

$ iperf3 -c $home -i 1 -Z
Connecting to host XXX.XXX.XXX.XXX, port 5201
[  4] local YYY.YYY.YYY.YYY port 46157 connected to XXX.XXX.XXX.XXX port 5201
[ ID] Interval           Transfer     Bandwidth       Retr  Cwnd
[  4]   0.00-1.00   sec  68.2 MBytes   572 Mbits/sec  2867    262 KBytes
[  4]   1.00-2.00   sec  83.9 MBytes   703 Mbits/sec  1714    314 KBytes
[  4]   2.00-3.00   sec  77.1 MBytes   645 Mbits/sec  2679    370 KBytes
[  4]   3.00-4.00   sec  82.5 MBytes   693 Mbits/sec  578    263 KBytes
[  4]   4.00-5.00   sec  84.7 MBytes   711 Mbits/sec    0    291 KBytes
[  4]   5.00-6.00   sec  76.8 MBytes   644 Mbits/sec  4456    549 KBytes
[  4]   6.00-7.01   sec  57.1 MBytes   477 Mbits/sec  3538    348 KBytes
[  4]   7.01-8.00   sec  88.8 MBytes   749 Mbits/sec    5    283 KBytes
[  4]   8.00-9.00   sec  87.5 MBytes   734 Mbits/sec    2    225 KBytes
[  4]   9.00-10.00  sec  86.2 MBytes   723 Mbits/sec    0    259 KBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bandwidth       Retr
[  4]   0.00-10.00  sec   793 MBytes   665 Mbits/sec  15839             sender
[  4]   0.00-10.00  sec   789 MBytes   662 Mbits/sec                  receiver

iperf Done.

So everything seems to be ok without openvpn.

I then start an openvpn tunnel without encryption, neither fragmentation and using 16000 bytes for mtu value (1500 gives me bad result, from 6000 to 48000 it doesn't change anything).

Server :

$ sudo openvpn --verb 4 --dev tun --proto udp --port 11000 --ifconfig 10.200.0.1 10.200.0.2 --cipher none --auth none --fragment 0 --mssfix 0 --tun-mtu 16000

Client :

$ sudo openvpn --verb 4 --dev tun --proto udp --port 11000 --ifconfig 10.200.0.2 10.200.0.1 --cipher none --auth none --remote YYY.YYY.YYY.YYY --fragment 0 --mssfix 0 --tun-mtu 160

And when I try the same iperf3 test, this time using the tunnel local ip address, results are showing 50% penalty :

$ iperf3 -c 10.200.0.2  -i 1 -Z
Connecting to host 10.200.0.2, port 5201
[  4] local 10.200.0.1 port 34403 connected to 10.200.0.2 port 5201
[ ID] Interval           Transfer     Bandwidth       Retr  Cwnd
[  4]   0.00-1.00   sec  43.0 MBytes   360 Mbits/sec    8    841 KBytes
[  4]   1.00-2.00   sec  38.8 MBytes   325 Mbits/sec    2    716 KBytes
[  4]   2.00-3.00   sec  36.2 MBytes   304 Mbits/sec    2    623 KBytes
[  4]   3.00-4.00   sec  37.5 MBytes   315 Mbits/sec    7    576 KBytes
[  4]   4.00-5.00   sec  35.0 MBytes   294 Mbits/sec    0    639 KBytes
[  4]   5.00-6.00   sec  36.2 MBytes   304 Mbits/sec    0    701 KBytes
[  4]   6.00-7.00   sec  38.8 MBytes   325 Mbits/sec    2    607 KBytes
[  4]   7.00-8.00   sec  36.2 MBytes   304 Mbits/sec    0    701 KBytes
[  4]   8.00-9.00   sec  37.5 MBytes   315 Mbits/sec    0    748 KBytes
[  4]   9.00-10.00  sec  36.2 MBytes   304 Mbits/sec    1    592 KBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bandwidth       Retr
[  4]   0.00-10.00  sec   375 MBytes   315 Mbits/sec   22             sender
[  4]   0.00-10.00  sec   373 MBytes   313 Mbits/sec                  receiver

That's kind of sucks 🙁

For the record, the vps server has this cpu : VIA Nano processor U2250 (1.6GHz Capable)
The host is a mac mini with an Intel(R) Core(TM) i5-3210M CPU @ 2.50GHz

At least also tried all the same tests from another vps server with an Intel Atom cpu, and the resulsts were identical.

There must be something I'm missing, because on this wiki page they can easily get gbit speed without encryption.

Any help is highly appreciated.

Traffic

aixki wrote--remote YYY.YYY.YYY.YYY

If this is an public internet address then I doubt you will get 1gbit ..

aixki

Yes it's the public ip of the openvpn server. I need an openvpn between two remotes sites who have gigabit connection, so why I wouldn't get 1gbit speed ?

Traffic

Post speedtest.net from server and client ..

aixki

What's the point ? You don't trust me saying these server and client are gigabit connected ?

Furthermore, I just have an ssh access for the server, so no speedtest (which is NOT a reliable speed test I think, better go with wget -O /dev/null imho). And at last, it will reveal my public ip which I don't especially want.

aixki

I've found a way to fix it !!!

First, for smoe reasons, I had to replace proto udp by proto tcp-client/tcp-server. I also needed to add --sndbuf 393216 --rcvbuf 393216 for client and --sndbuf 0 --rcvbuf 0 for server.

I don't understand why tcp gives me better performance than udp, maybe there's some firewall rules on my ISP for non fragmented udp datagrams that throttle the bandwidth, who knows...

Anyway, here are the command lines.

server:

# openvpn --dev tun --proto tcp-server --port 11000 --ifconfig 10.200.0.1 10.200.0.2 --cipher none --auth none --fragment 0 --mssfix 0 --tun-mtu 48000 --sndbuf 0 --rcvbuf 0

client:

# openvpn --dev tun --proto tcp-client --port 11000 --ifconfig 10.200.0.2 10.200.0.1 --cipher none --auth none --remote YYY.YYY.YYY.YYY --fragment 0 --mssfix 0 --tun-mtu 48000 --sndbuf 393216 --rcvbuf 393216

iperf3 test result:

# iperf3 -c 10.200.0.2  -i 1 -Z -p 5201
Connecting to host 10.200.0.2, port 5201
[  4] local 10.200.0.1 port 59332 connected to 10.200.0.2 port 5201
[ ID] Interval           Transfer     Bandwidth       Retr  Cwnd
[  4]   0.00-1.00   sec   107 MBytes   894 Mbits/sec    0   3.16 MBytes
[  4]   1.00-2.00   sec   108 MBytes   902 Mbits/sec    0   3.16 MBytes
[  4]   2.00-3.00   sec   105 MBytes   881 Mbits/sec    0   3.16 MBytes
[  4]   3.00-4.00   sec   108 MBytes   902 Mbits/sec    0   3.16 MBytes
[  4]   4.00-5.00   sec   106 MBytes   891 Mbits/sec    0   3.16 MBytes
[  4]   5.00-6.00   sec   108 MBytes   902 Mbits/sec    0   3.16 MBytes
[  4]   6.00-7.00   sec   110 MBytes   923 Mbits/sec    0   3.16 MBytes
[  4]   7.00-8.00   sec   106 MBytes   891 Mbits/sec    0   3.16 MBytes
[  4]   8.00-9.00   sec  97.5 MBytes   818 Mbits/sec    0   3.16 MBytes
[  4]   9.00-10.00  sec  72.5 MBytes   608 Mbits/sec    0   3.16 MBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bandwidth       Retr
[  4]   0.00-10.00  sec  1.00 GBytes   861 Mbits/sec    0             sender
[  4]   0.00-10.00  sec  1.00 GBytes   861 Mbits/sec                  receiver

Traffic

Well .. thanks for the feedback 8-)

aixki wroteYou don't trust me saying these server and client are gigabit connected

Typical internet connections do not give 1gb up and 1gb down they would be more asymmetric .. eg: 1gb down / 1mb up .. that was why I asked .. But yours is obviously better than most.

aixki

Traffic wroteWell .. thanks for the feedback 8-)

aixki wroteYou don't trust me saying these server and client are gigabit connected
Typical internet connections do not give 1gb up and 1gb down they would be more asymmetric .. eg: 1gb down / 1mb up .. that was why I asked .. But yours is obviously better than most.

Oh ok, my bad. And you're right, my client can't upload more than 250 mbit/s, but my server can 8-) I took care todo an iperf from my server first to ensure that I can upload at 1 gbit/s (well 900 mbit/s in reality).

aixki

Ok, now I face the same performance issue, but only when I do ip forwarding. Details can be found here : http://serverfault.com/questions/777354/huge-performance-penalty-in-gbit-link-with-ip-forwarding-masquerade-through-cl

If someone has any idea...

maurer

Hello,

long time openvpn user but first post around here.

I have access to 2 KVM hypervisors (openstack icehouse - quite old - i know) so i've created 2 centos 7 VMs and tested the same scenario as above ( cipher +auth none) and got:

[centos@test-2 ~]$ iperf3 -c 10.200.0.1  -i 1 -Z -p 5201
Connecting to host 10.200.0.1, port 5201
[  4] local 10.200.0.2 port 34942 connected to 10.200.0.1 port 5201
[ ID] Interval           Transfer     Bandwidth       Retr  Cwnd
[  4]   0.00-1.00   sec  1004 MBytes  8.42 Gbits/sec    0   3.16 MBytes
[  4]   1.00-2.00   sec   999 MBytes  8.38 Gbits/sec    0   3.16 MBytes
[  4]   2.00-3.00   sec   956 MBytes  8.02 Gbits/sec    1   3.06 MBytes
[  4]   3.00-4.00   sec  1004 MBytes  8.42 Gbits/sec    0   3.06 MBytes
[  4]   4.00-5.00   sec  1008 MBytes  8.45 Gbits/sec    0   3.06 MBytes
[  4]   5.00-6.00   sec  1003 MBytes  8.41 Gbits/sec    0   3.06 MBytes
[  4]   6.00-7.00   sec  1007 MBytes  8.45 Gbits/sec    0   3.06 MBytes
[  4]   7.00-8.00   sec   998 MBytes  8.37 Gbits/sec    0   3.06 MBytes
[  4]   8.00-9.00   sec   966 MBytes  8.11 Gbits/sec    0   3.06 MBytes
[  4]   9.00-10.00  sec   982 MBytes  8.24 Gbits/sec    0   3.06 MBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bandwidth       Retr
[  4]   0.00-10.00  sec  9.69 GBytes  8.33 Gbits/sec    1             sender
[  4]   0.00-10.00  sec  9.69 GBytes  8.33 Gbits/sec                  receiver

for cipher AES-256-CBC and auth SHA384 I got:

[centos@test-2 ~]$ iperf3 -c 10.200.0.1  -i 1 -Z -p 5201
Connecting to host 10.200.0.1, port 5201
[  4] local 10.200.0.2 port 34948 connected to 10.200.0.1 port 5201
[ ID] Interval           Transfer     Bandwidth       Retr  Cwnd
[  4]   0.00-1.00   sec   162 MBytes  1.36 Gbits/sec    0    890 KBytes
[  4]   1.00-2.01   sec   165 MBytes  1.38 Gbits/sec    0    890 KBytes
[  4]   2.01-3.00   sec   162 MBytes  1.36 Gbits/sec    0    983 KBytes
[  4]   3.00-4.00   sec   161 MBytes  1.35 Gbits/sec    0    983 KBytes
[  4]   4.00-5.00   sec   162 MBytes  1.36 Gbits/sec    0    983 KBytes
[  4]   5.00-6.00   sec   162 MBytes  1.36 Gbits/sec    0    983 KBytes
[  4]   6.00-7.00   sec   165 MBytes  1.38 Gbits/sec    0   3.06 MBytes
[  4]   7.00-8.00   sec   165 MBytes  1.38 Gbits/sec    0   3.06 MBytes
[  4]   8.00-9.01   sec   165 MBytes  1.38 Gbits/sec    0   3.06 MBytes
[  4]   9.01-10.01  sec   165 MBytes  1.38 Gbits/sec    0   3.06 MBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bandwidth       Retr
[  4]   0.00-10.01  sec  1.60 GBytes  1.37 Gbits/sec    0             sender
[  4]   0.00-10.01  sec  1.60 GBytes  1.37 Gbits/sec                  receiver

CPU is AES-NI capable:

[centos@test-2 ~]$ cat /proc/cpuinfo
processor       : 0
vendor_id       : GenuineIntel
cpu family      : 6
model           : 42
model name      : Intel Xeon E312xx (Sandy Bridge)
stepping        : 1
microcode       : 0x1
cpu MHz         : 2596.990
cache size      : 4096 KB
physical id     : 0
siblings        : 1
core id         : 0
cpu cores       : 1
apicid          : 0
initial apicid  : 0
fpu             : yes
fpu_exception   : yes
cpuid level     : 13
wp              : yes
flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 syscall nx rdtscp lm constant_tsc rep_good nopl eagerfpu pni pclmulqdq ssse3 cx16 sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer aes xsave avx hypervisor lahf_lm xsaveopt
bogomips        : 5193.98
clflush size    : 64
cache_alignment : 64
address sizes   : 46 bits physical, 48 bits virtual
power management:

aixki

Hi,

Sorry for the (very) late reply. Your machines are on the same network so that might be related. Maybe when though wan there's a routing performance penalty, no idea.