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8/14/2019 Presentation by Chanuka Wattegama
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Broadband Quality of Service
in Sri Lanka
Test Results
8/14/2019 Presentation by Chanuka Wattegama
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Advertised
Download
Speed
Advertised
Upload
SpeedIndia Airtel 512 kbps 512 kbps
BSNL - Business 2 Mbps 256 kbps
BSNL - Home 2 Mbps 256 kbps
Hathway 256 kbps 256 kbps
Sri Lanka Dialog 2 Mbps 512 kbps
SLT - Business 2 Mbps 512 kbps
SLT - Home 512 kbps 128 kbps
Singapore StarHub* 1 Mbps 256 kbps
Packages tested
* Partial testing
8/14/2019 Presentation by Chanuka Wattegama
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Test Results
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 Delay metrics (RTT/jitter)
Loss metrics (Packet Loss)
8/14/2019 Presentation by Chanuka Wattegama
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Test Results
Throughput - Downloadspeed
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2 Mbps
Download speed (Business Packages):
Relatively healthy in ISP domain
> 75%
ISP
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SLT (2M/512k) Dialog (2M/512k)
Download speed (Business Packages):
and does not significantly vary among different days
(be it week days or weekend)
ISP
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2 Mbps
Download speed (Business Packages):poor in Local domain
> 75%
Local
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SLT (2M/512k) Dialog (2M/512k)
Download speed (Business Packages): also variations are
relatively higher among three days (interconnection issues?)
Local
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2 Mbps
Download speed (Business Packages):even poorer when accessing International sites
> 75%
Intl
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SLT (2M/512k) Dialog (2M/512k)
Download speed (Business Packages):
that does not significantly vary across days
Intl
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Download speed (SLT Business vs. SLT Home
packages):
in % terms, home is better than business
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Download speed (SLT Business vs. SLT Home
packages): and comparable in reaching international
sites
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Download speed: Indiaand Sri Lanka (ISP Domain):
Sri Lanka performs slightly better
ISP
> 75%
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Download speed: Indiaand Sri Lanka (Local Domain):
India performs better
Local
> 75%
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Download speed: Indiaand Sri Lanka (accessing
International servers): India looks good
Intl
> 75%
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Download speed Sri Lanka andSingapore (accessing
International servers): Singapore wins
Intl
> 75%
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Test Results
Throughput - Uploadspeeds
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512 kbps
Upload speed (Business packages):
Somewhat healthy in ISP domain
ISP
> 75%
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512 kbps
Upload speed (Business packages):
a bit down at Local Domain
Local
> 75%
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512 kbps
Upload speed (Business packages):
and poor in accessing International sites
Intl
> 75%
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Upload speed (SLT Business vs. SLT Home packages): here too
in %, home is better than business, but not in actual speeds
(aprox 100 kpbs)
(aprox 200 kpbs)
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Upload speed Sri Lanka andSingapore (accessing
International sites): Singapore wins
Intl
> 75%
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Test Results
Jitter and Packet Loss
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Jitter : Sometimes not enough quality for video/high
quality audio (
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ISP Week Day Local Week Day INT Week Day
ISP Weekend Local Weekend INT Weekend
Packet Loss : Most of the times, but not always, within
acceptable limits (5%)
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Where is the bottleneck?
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Accessing www.lankacom.net through SLT (2M/512k)
NB: All IP addresses are within SL (www.whois.net)
65 ms
25 ms
170 ms
10 ms
Local
http://www.lankacom.net/http://www.lankacom.net/8/14/2019 Presentation by Chanuka Wattegama
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Accessing www.yahoo.com through SLT (2M/512k)
NB: Upto 5th hop IP addresses are within SL (www.whois.net)
65 ms
25 ms
170 ms
10 ms
Intl
http://www.yahoo.com/http://www.yahoo.com/8/14/2019 Presentation by Chanuka Wattegama
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Using RTT/latency in broadband QoS regulation
Local Network Latency (LNL): Round Trip Time (RTT)taken to access a national or site hosted within the
country
Requirement: LNL < 85ms for 95% of the peak time
International Network Latency (INL) : Round Trip Time
(RTT) to the first US entry point.
Requirement: INL < 300ms for 95% of the peak time
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Where do
we stand?
PackageLocal Network Latency International Network Latency
Requirement Achivement Passed? Requirement Value Passed?
Airtel (512k/512k) 85 ms 8 ms 300 ms 217 BSNL (2M/256k) 85 ms 191 ms 300 ms 295 SLT (2M/512k) 85 ms 11 ms 300 ms 258
ISP1 Out:
Exit from local
ISP
FEP: First Entry
point to USA
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Few points to ponder
o Do we always get what is promised, especially whendownloading from International sites?
o Are these trends transitional or long-term?
o
Are Home packages better value for money thanBusiness packages?
o Can we be complacent because the situation is not too
different in India?
o Should we demand better QoS for Games/video?
o Should we adopt Singapore standards or more
stringent ones?
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Thank You!
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
mailto:[email protected]://www.lirneasia.net/http://www.lirneasia.net/mailto:[email protected]