Investigating the cause of latency differences
@MikeA said: I randomly checked latency to your LG compared to OVH stuff in Sydney and lord, 180ms (FlowVPS) vs 260ms (OVH) from central U.S. That's pretty nice.
How would one investigate and determine the cause of latency differences like this? Thanks!
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Just contact OVH support and provide them with some traceroutes. They'll fix it.
You can't do anything.
So I asked Google how to investigate the cause of latency in networks. The featured search result was https://www.inap.com/blog/troubleshooting-network-latency/
@MikeA Do you feel like rechecking the pings to see if the difference still remains? Want to put up some traceroutes? If not, that's fine. I just thought the big difference was interesting, and I wondered why the difference was happening.
MetalVPS
Can you fix Geographical differences? No. But peering ? Yes.
Trace route will show you the path it takes to reach your server.
Some companies spends crap tons of $$ in hardware's, some focuses on network, very few does both and many average end users don't really care.
I remember seeing a trace to SG, where the traffic routes through LA before reaching SG.
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Run an mtr both ways, submit on the forum and you should get some assistance :-)
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My original post in this thread was unclear. Instead of asking about a performance problem that I am experiencing, I am hoping for more information about an interesting comment @MikeA made in another thread. @MikeA posted about latency differences between his location in central US and two other locations close together in Australia:
https://talk.lowendspirit.com/discussion/comment/17481/#Comment_17481
I'm wondering what caused the big difference @MikeA observed.
MetalVPS
It is pointless to test, my comment was regarding how OVH latency from US>AU was much higher. There's no way around that, it's just OVH, just like how their US locations still have poor routing to some states.
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Yours truly.
@MikeA Thanks for your interesting comment!
Today, from Sonora, MX, I seem to be seeing latency of about 209 ms (OVH SYD) versus about 160 ms (flowvps).
chronos@localhost ~/Downloads $ ping -c 2 syd.smokeping.ovh.net
PING syd.smokeping.ovh.net (139.99.217.211) 56(84) bytes of data.
64 bytes from syd.smokeping.ovh.net (139.99.217.211): icmp_seq=1 ttl=43 time=213 ms
64 bytes from syd.smokeping.ovh.net (139.99.217.211): icmp_seq=2 ttl=43 time=204 ms
--- syd.smokeping.ovh.net ping statistics ---
2 packets transmitted, 2 received, 0% packet loss, time 1001ms
rtt min/avg/max/mdev = 204.410/208.828/213.247/4.442 ms
chronos@localhost ~/Downloads $ ping -c 2 lg.flowvps.com
PING lg.flowvps.com (103.108.228.100) 56(84) bytes of data.
64 bytes from 103.108.228.100 (103.108.228.100): icmp_seq=1 ttl=53 time=160 ms
64 bytes from 103.108.228.100 (103.108.228.100): icmp_seq=2 ttl=53 time=159 ms
--- lg.flowvps.com ping statistics ---
2 packets transmitted, 2 received, 0% packet loss, time 1002ms
rtt min/avg/max/mdev = 159.520/160.200/160.880/0.680 ms
chronos@localhost ~/Downloads $ sudo traceroute -I syd.smokeping.ovh.net
traceroute to syd.smokeping.ovh.net (139.99.217.211), 30 hops max, 60 byte packets
1 192.168.1.1 (192.168.1.1) 1.174 ms 1.199 ms 1.268 ms
2 192.168.3.1 (192.168.3.1) 1.390 ms 1.417 ms 1.472 ms
3 10.116.60.1 (10.116.60.1) 3.642 ms 3.760 ms 3.780 ms
4 10.180.51.0 (10.180.51.0) 8.262 ms 8.248 ms 8.287 ms
5 10.180.51.1 (10.180.51.1) 7.008 ms 7.154 ms 6.774 ms
6 201-174-14-25.transtelco.net (201.174.14.25) 6.611 ms 5.269 ms 5.149 ms
7 201-174-250-44.transtelco.net (201.174.250.44) 16.125 ms 16.166 ms 16.197 ms
8 201-174-255-7.transtelco.net (201.174.255.7) 8.788 ms 8.775 ms 8.841 ms
9 201-174-255-255.transtelco.net (201.174.255.255) 9.446 ms 9.434 ms 9.517 ms
10 lax-la1-bb1-a9.ca.us (142.44.208.30) 67.831 ms 67.819 ms 67.722 ms
11 syd-sy2-bb2-a9.ca.us (142.44.208.199) 205.540 ms 205.574 ms 205.530 ms
12 syd-sy2-bb1-a9.aus.asia (103.5.14.222) 231.601 ms 230.834 ms 230.812 ms
13 syd1-sy2-g1-nc5.aus.asia (103.5.14.221) 210.661 ms 210.637 ms 210.634 ms
14 * * *
15 * * *
16 * * *
17 * * *
18 * * *
19 * * *
20 syd.smokeping.ovh.net (139.99.217.211) 204.494 ms 204.478 ms 206.154 ms
chronos@localhost ~/Downloads $ sudo traceroute -I lg.flowvps.com
traceroute to lg.flowvps.com (103.108.228.100), 30 hops max, 60 byte packets
1 192.168.1.1 (192.168.1.1) 1.221 ms 1.129 ms 1.184 ms
2 192.168.3.1 (192.168.3.1) 1.450 ms 1.559 ms 1.662 ms
3 10.116.60.1 (10.116.60.1) 27.537 ms 27.568 ms 27.692 ms
4 10.180.51.0 (10.180.51.0) 8.653 ms 8.592 ms 8.479 ms
5 10.180.51.1 (10.180.51.1) 7.691 ms 7.733 ms 7.712 ms
6 201-174-14-25.transtelco.net (201.174.14.25) 7.430 ms 5.234 ms 5.218 ms
7 201-174-250-44.transtelco.net (201.174.250.44) 7.505 ms 7.385 ms 7.424 ms
8 201-174-255-7.transtelco.net (201.174.255.7) 8.673 ms 8.610 ms 8.683 ms
9 colocation-australia.as63956.any2ix.coresite.com (206.72.211.44) 22.383 ms 22.423 ms 22.426 ms
10 xe-0-0-2.tr1.pad.nsw.au.coloau.net.au (45.112.244.80) 201.366 ms 201.275 ms 185.037 ms
11 xe-0-0-0.tr1.s1.nsw.au.coloau.net.au (45.112.245.130) 165.343 ms 165.350 ms 165.258 ms
12 xe-9-0-1.cr2.s1.nsw.au.coloau.net.au (45.112.245.132) 181.020 ms 179.118 ms 179.035 ms
13 xe-4-0-0.cr2.me1.vic.au.coloau.net.au (103.52.117.104) 269.068 ms 269.044 ms 269.023 ms
14 103.108.228.100 (103.108.228.100) 179.238 ms 179.220 ms 179.258 ms
chronos@localhost ~/Downloads $
MetalVPS
For anyone who might be interested, previous Low End discussion of OVH APAC latency:
https://www.lowendtalk.com/discussion/143996/ovh-asia-pacific-network-latest-latency-optimizations
MetalVPS
Yeap! I knew it.
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It's fun that the ping time from flovps seems to be about 268 ms versus about 160 ms to flowvps and 209 ms to OVH SYD. I didn't seem to find an easy way to get a ping from OVH SYD.
Traceroute from https://lg.ovh.net/ :
syd1/ipv4: traceroute 187.189.238.1
Start: Fri Feb 21 23:07:34 2020
HOST: syd1.lg.ovh.net Loss% Snt Last Avg Best Wrst StDev
1. AS16276 139.99.192.1 0.0% 3 0.3 0.2 0.1 0.3 0.0
2. AS??? 192.168.143.254 0.0% 3 0.3 0.3 0.2 0.3 0.0
3. AS??? 10.29.225.190 0.0% 3 0.6 0.5 0.3 0.6 0.0
4. AS??? 10.29.224.14 0.0% 3 0.5 0.5 0.4 0.6 0.0
5. AS??? 10.133.18.28 0.0% 3 0.8 0.7 0.5 0.8 0.0
6. AS??? 10.75.8.10 0.0% 3 0.6 0.5 0.3 0.7 0.0
7. AS??? 10.75.248.68 66.7% 3 1.0 1.0 1.0 1.0 0.0
8. AS16276 syd-sy2-bb2-a9.aus.asia (103.5.14.218) 0.0% 3 1.3 1.1 0.9 1.3 0.0
9. AS16276 lax-la1-bb1-a9.ca.us (142.44.208.198) 0.0% 3 137.9 137.8 137.7 137.9 0.0
10. AS16276 be100-1366.ash-1-a9.va.us (178.32.135.156) 0.0% 3 192.2 192.2 192.1 192.3 0.0
11. AS16276 dfw-da2-bb1-a9.tx.us (142.44.208.102) 0.0% 3 222.7 222.7 222.6 222.8 0.0
12. AS??? ??? 100.0 3 0.0 0.0 0.0 0.0 0.0
13. AS32098 201-174-251-7.transtelco.net (201.174.251.7) 0.0% 3 235.7 235.6 235.5 235.7 0.0
14. AS32098 201-174-251-21.transtelco.net (201.174.251.21) 0.0% 3 195.5 195.5 195.4 195.6 0.0
15. AS32098 201-174-255-6.transtelco.net (201.174.255.6) 0.0% 3 199.2 199.0 198.7 199.2 0.0
16. AS32098 201-174-250-45.transtelco.net (201.174.250.45) 0.0% 3 198.2 198.0 197.9 198.2 0.0
17. AS32098 201-174-14-26.transtelco.net (201.174.14.26) 33.3% 3 328.6 308.0 287.4 328.6 29.1
18. AS??? ??? 100.0 3 0.0 0.0 0.0 0.0 0.0
19. AS??? ??? 100.0 3 0.0 0.0 0.0 0.0 0.0
20. AS22884 fixed-187-189-238-1.totalplay.net (187.189.238.1) 33.3% 3 319.7 308.1 296.5 319.7 16.4
Ping and traceroute rom http://lg.flowvps.com/ :
PING 187.189.238.1 (187.189.238.1) 56(84) bytes of data.
64 bytes from 187.189.238.1: icmp_seq=1 ttl=55 time=284 ms
64 bytes from 187.189.238.1: icmp_seq=2 ttl=55 time=261 ms
64 bytes from 187.189.238.1: icmp_seq=3 ttl=55 time=245 ms
64 bytes from 187.189.238.1: icmp_seq=4 ttl=55 time=282 ms
--- 187.189.238.1 ping statistics ---
4 packets transmitted, 4 received, 0% packet loss, time 3003ms
rtt min/avg/max/mdev = 245.217/268.417/284.170/16.067 ms
traceroute to 187.189.238.1 (187.189.238.1), 30 hops max, 60 byte packets
1 103.217.254.1 (103.217.254.1) [AS136557/AS136744/AS58940] 15.705 ms 15.689 ms 15.682 ms
2 xe-4-0-0.cr2.me1.vic.au.coloau.net.au (103.52.117.104) [AS63956/AS45177] 0.183 ms 0.191 ms 0.190 ms
3 xe-1-0-0.cr2.s1.nsw.au.coloau.net.au (45.112.247.80) [AS63956/AS45177] 149.558 ms 149.583 ms 149.664 ms
4 xe-0-0-47.tr1.s1.nsw.au.coloau.net.au (45.112.245.133) [AS63956/AS45177] 151.657 ms 151.655 ms 151.683 ms
5 xe-0-0-0.tr1.pad1.nsw.au.coloau.net.au (45.112.245.131) [AS63956/AS45177] 155.624 ms 155.652 ms 155.622 ms
6 colocation-australia.as63956.any2ix.coresite.com (206.72.211.44) [AS46887/AS14365/AS4039/AS1784] 168.978 ms 168.780 ms 168.770 ms
7 201-174-14-26.transtelco.net (201.174.14.26) [AS32098] 207.975 ms 236.940 ms 220.770 ms
8 * * *
9 * * *
10 * * *
11 * * *
-- Traceroute timed out --
mtr from http://lg.flowvps.com/ :
Start: Fri Feb 21 17:02:58 2020
HOST: test.servername.com Loss% Snt Last Avg Best Wrst StDev
1.|-- 103.217.254.1 0.0% 10 0.5 3.4 0.5 10.2 3.8
2.|-- xe-4-0-0.cr2.me1.vic.au.coloau.net.au 0.0% 10 0.2 2.6 0.2 23.8 7.4
3.|-- xe-1-0-0.cr2.s1.nsw.au.coloau.net.au 0.0% 10 149.6 152.5 149.5 179.0 9.3
4.|-- xe-0-0-47.tr1.s1.nsw.au.coloau.net.au 0.0% 10 150.8 166.3 150.1 253.6 31.2
5.|-- xe-0-0-0.tr1.pad1.nsw.au.coloau.net.au 0.0% 10 174.4 177.7 156.3 208.2 13.4
6.|-- colocation-australia.as63956.any2ix.coresite.com 0.0% 10 149.4 149.4 149.4 149.5 0.0
7.|-- 201-174-14-26.transtelco.net 0.0% 10 246.2 227.1 204.4 246.2 12.9
8.|-- ??? 100.0 10 0.0 0.0 0.0 0.0 0.0
9.|-- ??? 100.0 10 0.0 0.0 0.0 0.0 0.0
10.|-- fixed-187-189-238-1.totalplay.net 0.0% 10 245.9 228.2 213.2 245.9 9.9
MetalVPS
@benj0x @seriesn @Clouvider Thanks for generously wanting me to have a solution to the issue here and for posting suggestions about how to achieve a resolution.
@Clouvider Thanks for mentioning mtr. For anybody who doesn't know about mtr, please see: https://en.wikipedia.org/wiki/MTR_(software)
MetalVPS
Flowvps is prem
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