UCL
 

Personal Miscellaneous TCP/IP GRID Quality of Service Multi-Cast

 
 

Managed Bandwidth - Next Generation

MB-NG is an experiment to qualify and quantify QoS in a real WAN environment. The official web page (maintained by me!) is at http://www.mb-ng.net.

Results:

Back-2-Back Tests

Description Date Status
GigE ping 2.4.19, e1000 4.4.19 drivers 11/02/03 Complete
udpmon with txqueuelen TBC 13/02/03  
tcp iperf with txqueuelen - use txq of 2000 14/02/03 Complete
udpmon with coalesce    
Kernel Parameters    
     
     

 

WAN Tests

Latency Tests

Description Date Status
GigE ping 2.4.19, e1000 4.4.19 drivers @ UCL, 4.3.x? @ MAN 11/02/03 30% - other machine pairs
udpmon standard blast (pkt sizes) between nodes 22/02/03 Complete - needs analysis
     
     
     

Throughput Tests

Description Date Status
iperf tcp 8h standard 2.4.19 tcp - get's 918mbit/sec ave 08-09/02/03 Complete - analysis 80%
GigE udp iperf for 1hours - loss ~ 1e-5 07/02/03 Complete
GigE quick tcp iperfs to/from all hosts 07/02/03 Complete
udpmon standard blast (pkt sizes) between nodes 22/02/03 Complete - needs analysis
iperf udp blasts between hosts - MAN machines perform poorly. 13/02/03 Complete
iperf tcp 8h hstcp 2.4.19 - get's 934mbit/sec ave 22/02/03 Complete - needs analysis
iperf tcp 8h scalable tcp 2.4.19 06/03/03 Complete - needs analysis
iperf udp blasts at various packet sizes from UCL to MAN - MAN machines perform very badly and differently 20-22/02/03 Complete
iperf tcp 24h standard 2.4.19 08/03/03 Complete - needs analysis
tsunami    
iperf tcp 8h standard with txqueuelen moderation TBA 22/02/03  
     
     

Other

Description Date Status
tcp iperf with txqueuelen - use txq of 2000

21/02/03

Complete
udpmon standard blast (pkt sizes) with txqueuelen variable    
     
     
     

 

QoS Tests

Description Date Status
Initial QoS, 3 flows (2lbe,1be) be99,lbe1 13/02/03 Complete - analysis added to web site.
qos, 3 flows (2lbe, 1be) be50, lbe10 22/02/03 Complete
     

 

TCP

TCP Stack Comparisions Summary

 

 

Old Tests:

udp

Back-to-Back test1 test2

noQoS 100->10 test1 test2

noQoS 10->100 test1 test2

gigE b2b test1

 

ping

Back-to-Back test1

noQoS 100->10 test1 test2

noQoS 10->100 test1 test2

 

 

Wed, 23 July, 2003 13:07 Previous PageNext Page
 
 
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2001-2003, Yee-Ting Li, email: ytl@hep.ucl.ac.uk, Tel: +44 (0) 20 7679 1376, Fax: +44 (0) 20 7679 7145
Room D14, High Energy Particle Physics, Dept. of Physics & Astronomy, UCL, Gower St, London, WC1E 6BT