User Tools

Site Tools


lbaops:expres-singaporetests

Differences

This shows you the differences between two versions of the page.

Link to this comparison view

Both sides previous revision Previous revision
Next revision
Previous revision
lbaops:expres-singaporetests [2007/01/11 14:07]
chris.phillips
lbaops:expres-singaporetests [2015/12/18 16:38] (current)
Line 1: Line 1:
-====== ​ Connectivity tests via Singapore ​\\ ====== +====== ​ Connectivity tests via Singapore ​ ======
-\\ +
-Default Oz-Europe route is via Singapore and 4x155 Mbps links (aggregated). This has the lowest RTT which is what most users want. \\ +
-\\ +
-=====  Testing Methology\\ ​===== +
-\\ +
-iperf in TCP and UDP mode. In TCP mode trying various different window sizes. Most tests were short, 30-120 sec\\ +
-\\ +
-====  Hosts\\ ​==== +
-\\+
  
-^ Host ^ Location |\\ +Default Oz-Europe route is via Singapore and 4x155 Mbps links (aggregated). This has the lowest RTT which is what most users want. 
-| epvsi1-ext | Sydney |\\ +
-| pkvsi1-ext | Parkes |\\ +
-| cavsi1-ext | Narrabri |\\ +
-| mpvsi1-ext | Mopra |\\ +
-| Huygens | Netherlands |\\ +
-\\ +
-=====  UDP Tests\\ ===== +
-\\ +
-Sydney -> Netherlands ​(9/1/2007)\\ +
-\\+
  
-^ Nominal Rate ^ Achieved Average ^ Packet Loss |\\ +=====  ​Testing Methology ​=====
-|  10 Mbps | 9.9 Mbps | 1[=%=] |\\ +
-|  50 Mbps |  50 Mbps | 0[=%=] |\\ +
-| 100 Mbps | 100 Mbps | 0.02[=%=] |\\ +
-| 120 Mbps | 120 Mbps | 0.25[=%=] |\\ +
-| 130 Mbps | 126 Mbps | 3.5[=%=] |\\ +
-| 200 Mbps | 136 Mbps | 33[=%=] |\\ +
-\\ +
-Sydney -> Netherlands (10/​1/​2007)\\ +
-\\+
  
-^ Nominal Rate ^ Achieved Average ^ Packet Loss |\\ +iperf in TCP and UDP modeIn TCP mode trying various different window sizesMost tests were short, 30-120 sec
-| 100 Mbps | 100 Mbps | 0.03[=%=] |\\ +
-| 120 Mbps | 118 Mbps | 1.4[=%=] |\\ +
-\\ +
-Observatories ​-> Netherlands (10/​1/​2007)\\ +
-\\+
  
-^ Site ^ Nominal Rate ^ Achieved Average ^ Packet Loss |\\ +====  ​Hosts ​====
-| Parkes ​  | 100 Mbps | 100 Mbps | 0.000[=%=] |\\ +
-| Parkes ​  | 120 Mbps | 118 Mbps | 1.6[=%=] |\\ +
-| Narrabri | 100 Mbps | 100 Mbps | 0.37[=%=] |\\ +
-| Narrabri | 120 Mbps | 117 Mbps | 2.5[=%=] |\\ +
-| Mopra    | 100 Mbps | 100 Mbps | 0.39[=%=] |\\ +
-| Mopra    | 120 Mbps | 116 Mbps | 3.5[=%=] |\\ +
-\\ +
-Simultaneous Tests (Multiple UDP streams from observatories,​ 11/​1/​2007)\\ +
-\\ +
-Running three iperf sessions simultaneously (120sec each)\\ +
-\\+
  
-^ Sites ^ Nominal Rate ^ Achieved Average ^ Packet Loss |\\ + 
-| Parkes+Mopra ​ | 100 Mbps | 100/100 Mbps | 0.17/​0.17[=%=] |\\ +^ Host ^ Location | 
-| Parkes+Narrabri | 100 Mbps | 100/100 Mbps | 0.3/​0.3[=%=] |\\ +| epvsi1-ext | Sydney | 
-| Sydney,​Sydney,​Sydney | 100 Mbps | 49/48/46 Mbps | 51/​51/​54[=%=] |\\+| pkvsi1-ext | Parkes | 
 +| cavsi1-ext | Narrabri | 
 +| mpvsi1-ext | Mopra | 
 +| Huygens | Netherlands | 
 + 
 +=====  UDP Tests ===== 
 + 
 +Sydney -> Netherlands (9/​1/​2007) 
 + 
 + 
 +^ Nominal Rate ^ Achieved Average ^ Packet Loss | 
 +|  10 Mbps | 9.9 Mbps | 1[=%=] | 
 +|  50 Mbps |  50 Mbps | 0[=%=] | 
 +| 100 Mbps | 100 Mbps | 0.02[=%=] | 
 +| 120 Mbps | 120 Mbps | 0.25[=%=] | 
 +| 130 Mbps | 126 Mbps | 3.5[=%=] | 
 +| 200 Mbps | 136 Mbps | 33[=%=] | 
 + 
 +Sydney -> Netherlands (10/​1/​2007) 
 + 
 + 
 +^ Nominal Rate ^ Achieved Average ^ Packet Loss | 
 +| 100 Mbps | 100 Mbps | 0.03[=%=] | 
 +| 120 Mbps | 118 Mbps | 1.4[=%=] | 
 + 
 +Observatories -> Netherlands (10/​1/​2007) 
 + 
 + 
 +^ Site ^ Nominal Rate ^ Achieved Average ^ Packet Loss | 
 +| Parkes ​  | 100 Mbps | 100 Mbps | 0.000[=%=] | 
 +| Parkes ​  | 120 Mbps | 118 Mbps | 1.6[=%=] | 
 +| Narrabri | 100 Mbps | 100 Mbps | 0.37[=%=] | 
 +| Narrabri | 120 Mbps | 117 Mbps | 2.5[=%=] | 
 +| Mopra    | 100 Mbps | 100 Mbps | 0.39[=%=] | 
 +| Mopra    | 120 Mbps | 116 Mbps | 3.5[=%=] | 
 + 
 +Simultaneous Tests (Multiple UDP streams from observatories,​ 11/​1/​2007) 
 + 
 +Running three iperf sessions simultaneously (120sec each) 
 + 
 + 
 +^ Sites ^ Nominal Rate ^ Achieved Average ^ Packet Loss | 
 +| Parkes+Mopra ​ | 100 Mbps | 100/100 Mbps | 0.17/​0.17[=%=] | 
 +| Parkes+Narrabri | 100 Mbps | 100/100 Mbps | 0.3/​0.3[=%=] | 
 +| Sydney,​Sydney,​Sydney | 100 Mbps | 49/48/46 Mbps | 51/​51/​54[=%=] |
 | Mopra+Narrabri+Parkes| 100 Mbps | 47/47/47 Mbps | 53/​53/​53[=%=] | | Mopra+Narrabri+Parkes| 100 Mbps | 47/47/47 Mbps | 53/​53/​53[=%=] |
 +
 +
 +15/1/2007
 +
 +It turns out links are shared on a hashing algorithm based on IP address and port numbers. This is deterministic but unlucky choice of port number may mean two streams are forced onto the same 155 Mbps link even though this leads to asymmetric use.
 +
 +Testing with careful choice of port number...
 +
 +
 +^ Sites ^ Port ^ Nominal Rate ^ Achieved Average ^ Packet Loss |
 +| ATCA+Mopra ​ | 52102/52100 | 100 Mbps | 100/100 Mbps | 0.39/​0.39[=%=] |
 +
 +=====  TCP tests =====
 +
 +These tests with iperf with various window sizes. Given the relatively slow ramp up time  the average and ~95 percentile values are given (eyeballed).
 +
 +Round trip time is 311 msec.
 +
 +60 second tests
 +
 +|align=center bgcolor=#​ddffdd border='​1px solid black' width=70%
 +^ Sites ^ TCP window ^  Average ^ Peak |
 +| Sydney | 2 MB| 14 Mbps | 18 Mbps |
 +| Sydney | 1 MB| 16 Mbps | 20 Mbps |
 +| Sydney | 800 kB| 12 Mbps | 14 Mbps |
 +| JIVE | 4 MB | 23 Mbps | 24 Mbps |
 +| JIVE | 5 MB |  40 Mbps | 43 Mbps |
 +| JIVE | 2 MB | 43 Mbps | 48 Mbps | 
 +| JIVE | 1 MB | 19 Mbps | 20 Mbps | 
 +| JIVE | 3 MB | 56 Mbps | 65 Mbps |
 +| Sydney | 2 MB | 29 Mbps | 36 Mbps |
 +| Sydney | 3 MB | 44 Mbps | 60 Mbps |
 +
lbaops/expres-singaporetests.txt · Last modified: 2015/12/18 16:38 (external edit)