Broadband Quality of Service in Sri Lanka Test
Broadband Quality of Service in Sri Lanka Test Results
Packages tested India Airtel Advertised Download Speed Advertised Upload Speed 512 kbps BSNL - Business 2 Mbps 256 kbps BSNL - Home 2 Mbps 256 kbps Hathway 256 kbps Dialog 2 Mbps 512 kbps SLT - Business 2 Mbps 512 kbps SLT - Home 512 kbps 128 kbps 1 Mbps 256 kbps Sri Lanka Singapore Star. Hub* * Partial testing
Test Results q Throughput (Download speed/Upload speed) Business Packages performance in • ISP domain • Local domain • International level Business vs. Home performance Sri Lanka vs. India/Singapore performance q Delay metrics (RTT/jitter) q Loss metrics (Packet Loss)
Test Results Throughput - Download speed
Download speed (Business Packages): Relatively healthy in ISP domain… 2, 000 2 Mbps 1, 800 1, 600 > 75% 1, 400 1, 200 1, 000 800 600 400 200 0 08: 00 11: 30 15: 00 SLT (2 M/512 k) 18: 00 Dialog (2 M/512 k) 20: 30 22: 30 ISP
Download speed (Business Packages): … and does not significantly vary among different days (be it week days or weekend) Dialog (2 M/512 k) SLT (2 M/512 k) 2000 1800 1600 1400 1200 1000 Week Day 1 Week Day 2 800 Week End 600 400 200 0 0 08: 00 11: 30 15: 00 18: 00 20: 30 22: 30 ISP
Download speed (Business Packages): …poor in Local domain 2 Mbps 2, 000 1, 800 1, 600 > 75% 1, 400 1, 200 1, 000 800 600 400 200 0 08: 00 SLT (2 M/512 k) 11: 30 15: 00 Dialog (2 M/512 k) 20: 30 18: 00 22: 30 Loca l
Download speed (Business Packages): …also variations are relatively higher among three days (interconnection issues? ) SLT (2 M/512 k) Dialog (2 M/512 k) 2000 1800 1600 1400 1200 1000 800 600 400 200 0 Week Day -1 Week Day - 2 Week End 0 08: 00 11: 30 15: 00 18: 00 20: 30 Loca 22: 30 l
Download speed (Business Packages): …even poorer when accessing International sites 2 Mbps 2, 000 1, 800 1, 600 > 75% 1, 400 1, 200 1, 000 800 600 400 200 0 08: 00 11: 30 15: 00 SLT (2 M/512 k) 18: 00 Dialog (2 M/512 k) 20: 30 22: 30 Int’l
Download speed (Business Packages): … that does not significantly vary across days SLT (2 M/512 k) Dialog (2 M/512 k) 2000 1800 1600 1400 1200 1000 Week Day - 1 Week Day -2 800 Weekend 600 400 200 0 0 08: 00 11: 30 15: 00 18: 00 20: 30 22: 30 Int’l
Download speed (SLT Business vs. SLT Home packages): …in ISP/WD % terms, home is better than business INT/WD (%) L/WD (%) 100 100 90 90 90 80 80 80 70 70 70 60 60 60 50 50 50 40 40 40 30 30 30 20 20 20 10 10 10 0 0 08: 00 11: 30 15: 00 18: 00 20: 30 22: 30 100 ISP/WE (%) 90 100 90 80 70 60 50 40 30 20 10 0 08: 00 11: 30 15: 00 18: 00 20: 30 22: 30 Business Home 0 08: 00 11: 30 15: 00 18: 00 20: 30 22: 30 100 L/WE (%) 90 80 80 70 70 60 60 50 50 40 40 30 30 20 20 10 10 0 08: 00 11: 30 Business 15: 00 Home 20: 30 18: 00 0 22: 30 INT/WE (%) Business Home 08: 00 11: 30 15: 00 18: 00 20: 30 22: 30
Download speed (SLT Business vs. SLT Home packages): …and comparable in reaching international sites 2000 1800 2000 ISP/WD (kbps) L/WD (kbps) 1800 2000 1800 1600 1400 1200 1000 800 800 600 600 400 400 200 200 0 0 08: 00 11: 30 15: 00 18: 00 20: 30 22: 30 2000 INT/WD(kbps) 0 08: 00 11: 30 15: 00 18: 00 20: 30 22: 30 L/WE(kbps) 1800 2000 1600 1400 1200 1000 800 800 600 600 400 400 200 200 1800 2000 08: 00 11: 30 15: 00 18: 00 20: 30 22: 30 ISP/WE (kbps) 0 08: 00 Business 11: 30 15: 00 Home 20: 30 18: 00 0 22: 30 Business Home 08: 00 11: 30 15: 00 18: 00 20: 30 22: 30 1800 0 INT/WE (kbps) Business Home 08: 00 11: 30 15: 00 18: 00 20: 30 22: 30
Download speed: India and Sri Lanka (ISP Domain): Sri Lanka performs slightly better 100% 90% 80% > 75% 70% 60% Airtel (512 k/512 k) 50% BSNL - Business (2 M/256 k) 40% BSNL - Home (2 M/256 k) Hathway (256 k/256 k) 30% Dialog (2 M/512 k) 20% SLT - Business (2 M/512 k) SLT - Home (512 k/128 k) 10% 0% 08: 00 11: 30 15: 00 18: 00 20: 30 ISP 22: 30
Download speed: India and Sri Lanka (Local Domain): India performs better 100% 90% 80% > 75% 70% 60% Airtel (512 k/512 k) 50% BSNL - Business (2 M/256 k) BSNL - Home (2 M/256 k) 40% Hathway (256 k/256 k) 30% Dialog (2 M/512 k) SLT - Business (2 M/512 k) 20% SLT - Home (512 k/128 k) 10% 0% 08: 00 11: 30 15: 00 18: 00 20: 30 Loca 22: 30 l
Download speed: India and Sri Lanka (accessing International servers): India looks good 100% 90% 80% > 75% 70% 60% Airtel (512 k/512 k) 50% BSNL - Business (2 M/256 k) 40% BSNL - Home (2 M/256 k) Hathway (256 k/256 k) 30% Dialog (2 M/512 k) SLT - Business (2 M/512 k) 20% SLT - Home (512 k/128 k) 10% 0% 08: 00 11: 30 15: 00 18: 00 20: 30 Int’l 22: 30
Download speed Sri Lanka and Singapore (accessing International servers): Singapore wins 100% 90% 80% > 75% 70% 60% 50% 40% SLT (2 M/512 k) 30% Dialog (2 M/512 k) 20% Starhub (1 M/256 k) 10% 23 : 00 20 : 30 /2 0 : 00 18 17 : 30 15 : 00 /1 4 : 30 11 08 : 00 / 10 : 30 0% Int’l
Test Results Throughput - Upload speeds
Upload speed (Business packages): Somewhat healthy in ISP domain 600 512 kbps 500 400 > 75% 300 200 SLT(2 M/512 k) 100 Dialog (2 M/512 k) 0 08: 00 11: 30 15: 00 18: 00 20: 30 22: 30 ISP
Upload speed (Business packages): …a bit down at Local Domain 600 512 kbps 500 400 > 75% SLT (2 M/512 k) 300 Dialog (2 M/512 k) 200 100 0 08: 00 11: 30 15: 00 18: 00 20: 30 22: 30 Loca l
Upload speed (Business packages): …and poor in accessing International sites 600 512 kbps 500 > 75% 400 SLT(2 M/512 k) 300 Dialog (2 M/512 k) 200 100 0 08: 00 11: 30 15: 00 18: 00 20: 30 22: 30 Int’l
Upload speed (SLT Business vs. SLT Home packages): …here too in %, home is better than business, but not in actual speeds 100 90 100 ISP/WD (%) 90 100 L/WD (%) 90 80 80 80 70 70 70 60 60 60 50 50 50 40 40 40 30 30 30 20 20 20 10 10 10 0 0 08: 00 100 90 11: 30 15: 00 18: 00 20: 30 22: 30 100 L/WE (%) 90 80 80 70 70 70 60 60 60 50 50 50 40 40 40 30 30 30 20 20 20 10 10 10 08: 00 11: 30 Business 15: 00 Home 20: 30 18: 00 0 22: 30 (aprox 200 kpbs) 08: 00 80 0 (aprox 100 kpbs) 0 08: 00 100 ISP/WE(%) INT/WD (%) 08: 00 11: 30 Business 15: 00 Home 20: 30 18: 00 0 22: 30 11: 30 15: 00 18: 00 20: 30 22: 30 INT/WE (%) Business Home 08: 00 11: 30 15: 00 18: 00 20: 30 22: 30
Upload speed Sri Lanka and Singapore (accessing International sites): Singapore wins 100% 90% 80% > 75% 70% 60% 50% SLT (2 M/512 k) 40% Dialog (2 M/512 k) 30% Starhub (1 M/256 k) 20% 10% 3: 0 0 0/2 20 : 3 0 0/2 18 : 0 7: 3 0 0/1 15 : 0 4: 0 0 0/1 11 : 3 08 : 0 0/1 0: 3 0 0% Int’l
Test Results Jitter and Packet Loss
Jitter : Sometimes not enough quality for video/high quality audio (<+10 ms) but satisfactory for other apps 50 ISP -weekday 50 Local - weekday 50 45 45 45 40 40 40 35 35 35 30 30 30 25 25 25 20 20 20 15 15 15 10 10 10 5 5 5 0 0 08: 00 11: 30 15: 00 18: 00 20: 30 22: 30 0 08: 00 ISP- weekend 50 11: 30 15: 00 18: 00 20: 30 22: 30 Local - weekend 45 35 30 25 20 15 10 0 806 SLTB 1113 1507 Dialog. B 1816 SLTH 2226 2023 11: 30 15: 00 18: 00 20: 30 22: 30 INT -weekend 45 40 35 30 25 20 15 10 08: 00 50 50 45 40 35 30 25 20 15 10 5 0 40 INT-weekday 11: 30 SLTB 15: 00 18: 00 Dialog. B 20: 30 SLTH 22: 30 5 0 08: 00 SLTB 11: 30 Dialog. B 15: 00 18: 00 SLTH 22: 30 20: 30
Packet Loss : Most of the times, but not always, within acceptable limits (5%) ISP –Week Day Local –Week Day INT –Week Day 30% 30% 25% 25% 20% 20% 15% 15% 10% 10% 5% 5% 5% 0% 0% 08: 00 11: 30 15: 00 18: 00 20: 30 22: 30 ISP –Weekend 30% 0% 08: 00 11: 30 30% 15: 00 18: 00 20: 30 22: 30 Local –Weekend 08: 00 11: 30 15: 00 18: 00 20: 30 22: 30 25% 25% 20% 20% 15% 15% 10% 10% 5% 5% 5% 0% 08: 00 11: 30 15: 00 18: 00 20: 30 22: 30 SLTB Dialog SLTH 0% 08: 00 11: 30 SLTB 15: 00 Dialog 18: 00 20: 30 SLTH 22: 30 INT –Weekend 30% 0% 08: 00 11: 30 SLTB 15: 00 18: 00 Dialog 20: 30 SLTH 22: 30
Where is the bottleneck?
Accessing www. lankacom. net through SLT (2 M/512 k) 170 ms 65 ms 25 ms 10 ms NB: All IP addresses are within SL (www. whois. net) Loca l
Accessing www. yahoo. com through SLT (2 M/512 k) 170 ms 65 ms 25 ms 10 ms NB: Upto 5 th hop IP addresses are within SL (www. whois. net) Int’l
Using RTT/latency in broadband Qo. S regulation Local Network Latency (LNL): Round Trip Time (RTT) taken to access a national or site hosted within the country Requirement: LNL < 85 ms for 95% of the peak time International Network Latency (INL) : Round Trip Time (RTT) to the first US entry point. Requirement: INL < 300 ms for 95% of the peak time
Where do we stand? ISP 1 – Out: Exit from local ISP FEP: First Entry point to USA Local Network Latency International Network Latency Package Requirement Achivement Airtel (512 k/512 k) 85 ms 8 ms BSNL (2 M/256 k) 85 ms 191 ms SLT (2 M/512 k) 85 ms 11 ms Passed? Requirement Value Passed? 300 ms 217 300 ms 295 300 ms 258
Few points to ponder o Do we always get what is promised, especially when downloading from International sites? o Are these trends transitional or long-term? o Are Home packages better value for money than Business packages? o Can we be complacent because the situation is not too different in India? o Should we demand better Qo. S for Games/video? o Should we adopt Singapore standards or more stringent ones?
Thank You! wattegama@lirne. net www. lirneasia. net Thanks to LIRNEasia team, Prof. Timothy Gonsalves and team, Ranga Kamaladasa, Sriganesh Lokanathan, Sanjana Hattotuwa, Sanath Siriwardena and all who contributed ideas/opinions in online discussions at LIRNEasia blog.
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