Right now I am living in third world country, So believe it or not , Imagining internet speed more than 2 mbps is kinda hard for me , So I have question from those have Google fiber or any internet connection with speed more than 100 mbps , Can you download file from torrent ? how much your speed is ? How about ordinary web server's,Do they support download speed more than 30,40 mbps ?
You don't have to live in a 3rd world country to get 2 mbps. Plenty of places in the US get that kind of speed, where the only non-wireless ISP is liable to be the phone company providing DSL straight out of the 90s.
I have 300/100mbps down/up fiber in Paris. As important as the bandwidth is the latency. Basically it means I do most of my work SSHed (mosh'ed actually) to a cluster and don't notice I'm working from home or the company's network. Streaming plots or even videos for debugging is seamless.
Is there any scientific way for measuring latency ? ping'ing seems kind of stupid for measuring right latency of connection.(Maybe I am wrong and ping is reliable way) .
One caveat with using ping is that ISPs can very easily prioritize that traffic, so you could see results from ping that you might not see in your application.
Pinging works pretty well, but not perfectly. ICMP echo is treated specially by many "traffic shaping" appliances. Firewalls frequently blanket-drop pings from outside, and sometimes pings are given higher priority to aid in diagnostics.
Usually it's noticeable when this is going on (especially the blocking), so you only need to go to some other solution when you notice this.
Try tcptraceroute for comparison. Or you can eg, open up Wireshark, make a real connection and look at the relative times on packets for a real connection. Ping gives you a starting point, usually "best case".
The usual rule of thumb I've seen for incorporating protocol overhead is to divide by 10 instead of 8: a 100Mbps connection can usually download about 10MB/s in practice (over http, scp, rsync, etc).
Right now I am living in third world country, So believe it or not , Imagining internet speed more than 2 mbps is kinda hard for me
Being a third-world country is not a handicap to have high internet speed. Fiber is not heavy infrastructure. I live in a messy third-world and we have 100mbs fiber at around $80/month.
That's true. But it's also true that lot of third world people use about 2 Mbps internet or even less. Mainly they (we?) aren't used to paying a lot for internet and relative to income, it is costlier than in developed countries (due to PPP differences.)
