You shouldn't also forget the fact that Egypt possibly hosts a number of CDNs whereas locally in Kenya we're yet to get these in place. The only one is probably Google Cache which they were testing a while back, and the UUNET Akamai (did that happen ?) To add on the fiber latency ... this is estimates of what providers might be seeing, could be wrong ... - SEACOM from Nbi to London via Mumbai is about 250-300ms. - When SEACOM's leg from Mombasa to London direct is done, they expect <100ms - TEAMS to London is about 170-200ms - A trans-Atlantic hop these days is about 50-70ms. This is better than several years back I used to see 100-150ms. Not sure how it improved. R ----- Original Message ----- From: "Michuki Mwangi" <michuki.mwangi@gmail.com> To: "Skunkworks Forum" <skunkworks@lists.my.co.ke> Sent: Wednesday, November 18, 2009 3:57:20 PM GMT +03:00 Iraq Subject: Re: [Skunkworks] Are our Networks poorly engineered? Hi Walu, because of the distance its likely that we cannot achieve the less than 100ms on Fiber. See this presentation on how to calculate latency on fiber and one can deduce what we will expect as a result http://jason-evans.com/post/73501683/quick-fiber-latency-reference Therefore Nairobi to London to USA return will always be about 200ms. Regards, Michuki. Walubengo J wrote:
Ave had a chance to travel widely and I notice that when I ping yahoo.com or google.com from say Egypt/SA/US the turnarounds times reported on average 56-60ms.
In Kenya, prior to the undersea cable i was experiencing turn-around times of over 1500ms to google.com. With the coming of the undersea cable I saw five-fold improvements with recordings of around 300ms but somehow deteriorating to around 400ms-500ms. Ave tested on both Mobile internet and fixed lines but am yet to experience turnaround times of below 60ms to google.com/yahoo.com from Kenya.
am truly confused why pinging from Kenyan territory seems to be so bad...
Where's Aki to confirm - maybe I have a local (LAN/Base Station) problem or what?
walu.
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