Since Digital Ocean has opened a new SG datacenter, it's time to pit my existing SG VPS at GPLhost against it!

From my Singtel connection at home, with iperf -s running on either VPS.

x220:~$ iperf -c sg.hackandtell.org # GPLhost
------------------------------------------------------------
Client connecting to sg.hackandtell.org, TCP port 5001
TCP window size: 22.9 KByte (default)
------------------------------------------------------------
[  3] local 192.168.88.249 port 46675 connected with 117.121.241.187 port 5001
[ ID] Interval       Transfer     Bandwidth
[  3]  0.0-10.2 sec  18.2 MBytes  15.0 Mbits/sec
x220:~$ iperf -c sgo.webconverger.com # Digital Ocean's new SG VPS
------------------------------------------------------------
Client connecting to sgo.webconverger.com, TCP port 5001
TCP window size: 22.9 KByte (default)
------------------------------------------------------------
[  3] local 192.168.88.249 port 52035 connected with 128.199.252.174 port 5001
[ ID] Interval       Transfer     Bandwidth
[  3]  0.0-10.3 sec  6.00 MBytes  4.89 Mbits/sec

BAD SINGTEL ROUTING: mtr shows the routing from Singtel (SG's largest ISP IIUC) to Digital Ocean's SGP1 is poor. It seems to go to Hong Kong and back and hence the pings are ~80ms, when they should be ~5ms!

I know GPLhost's network configuration is limited to just 50 Mbit/sec. It's a shame I'm not getting close to it from my OpenNET Singtel line at home. :(

Nonetheless GPLhost beats Digital Ocean on repeated iperf tests on average by at least 2x from my Singapore connection.

From a Digital Ocean droplet in the Netherlands

[hendry@nl ~]$ iperf -c sgo.webconverger.com # Digital Ocean
------------------------------------------------------------
Client connecting to sgo.webconverger.com, TCP port 5001
TCP window size: 22.9 KByte (default)
------------------------------------------------------------
[  3] local 146.185.152.215 port 45486 connected with 128.199.252.174 port 5001
[ ID] Interval       Transfer     Bandwidth
[  3]  0.0-10.1 sec  6.38 MBytes  5.30 Mbits/sec
[hendry@nl ~]$ iperf -c sg.hackandtell.org # GPLhost
------------------------------------------------------------
Client connecting to sg.hackandtell.org, TCP port 5001
TCP window size: 22.9 KByte (default)
------------------------------------------------------------
[  3] local 146.185.152.215 port 60435 connected with 117.121.241.187 port 5001
[ ID] Interval       Transfer     Bandwidth
[  3]  0.0-11.1 sec  1.50 MBytes  1.13 Mbits/sec

Digital Ocean's international peering seems a lot better. The results above are indicative.

From Linode in the UK

hendry@gb ~$ iperf -c sgo.webconverger.com # To the SG Digital Ocean droplet
------------------------------------------------------------
Client connecting to sgo.webconverger.com, TCP port 5001
TCP window size: 20.0 KByte (default)
------------------------------------------------------------
[  3] local 176.58.122.199 port 36559 connected with 128.199.252.174 port 5001
[ ID] Interval       Transfer     Bandwidth
[  3]  0.0-10.1 sec  46.2 MBytes  38.4 Mbits/sec
hendry@gb ~$ iperf -c sg.hackandtell.org # To my GPLhost VPS in SG M1 datacentre
------------------------------------------------------------
Client connecting to sg.hackandtell.org, TCP port 5001
TCP window size: 20.0 KByte (default)
------------------------------------------------------------
[  3] local 176.58.122.199 port 33729 connected with 117.121.241.187 port 5001
[ ID] Interval       Transfer     Bandwidth
[  3]  0.0-11.2 sec  2.12 MBytes  1.60 Mbits/sec

Digital Ocean's international bandwidth definitely seems a lot better!

Webconverger's VPS are documented upon http://webconverger.org/servers/.

From a Microsoft Azure VPS to either SG VPS

hendry@hackerspacesg:~$ iperf -d -c sgo.webconverger.com
WARNING: option -d is not valid for server mode
------------------------------------------------------------
Client connecting to sgo.webconverger.com, TCP port 5001
TCP window size: 22.9 KByte (default)
------------------------------------------------------------
[  3] local 10.146.222.93 port 53883 connected with 128.199.252.174 port 5001
[ ID] Interval       Transfer     Bandwidth
[  3]  0.0-10.0 sec   572 MBytes   480 Mbits/sec

480Mbit/sec from Microsoft to Digital Ocean... NICE! Still that is IIUC less than half a Gigabit connection.

hendry@hackerspacesg:~$ iperf -d -c sg.hackandtell.org
WARNING: option -d is not valid for server mode
------------------------------------------------------------
Client connecting to sg.hackandtell.org, TCP port 5001
TCP window size: 22.9 KByte (default)
------------------------------------------------------------
[  3] local 10.146.222.93 port 40515 connected with 117.121.241.187 port 5001
[ ID] Interval       Transfer     Bandwidth
[  3]  0.0-10.0 sec  55.2 MBytes  46.2 Mbits/sec

Ok, here GPLhost's 50Mbit/s limit is plain to see.

Conclusion

Digital Ocean's SG droplet internal connectivity to Singapore is a little worrying. A traceroute indicates traffic is going upto Hong Kong!

I need someone on a 1Gbps line to do some iperf testing. Any My Republic users reading this?

I'm going to continue with GPLhost till at least to the end of May and I guess I will make a decision whether to migrate or not long before then. GPLhost are a small outfit, though they have provided really good service over the period I've used them. DO on the hand seems a bit unpredictable. It took them two days to sort out a networking glitch in Archlinux images made available in Singapore. DO could easily be a victim of their own success.

Update: A network engineer from DO got in touch to say they working to improve local peering. I guess a follow up test from me will be in order...(!)

Update: Outage today http://www.digitaloceanstatus.com/history?update=206#95 and still the routing from Singtel to SGP1 is poor http://ix.io/aWZ after a month. :/

Update: 4 months later, still bad: http://r2d2.webconverger.org/2014-05-18/mtr-sgo.webconverger.com.html

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