Hello All,
Need your inputs peeps.
We're currently running some tests on our link, which is supposed to be a 2Mbps
dedicated line. The test involves putting up an iperf server on our side, then
running iperf in client mode on the remote side(i.e. Hong Kong).
So far the number's we're getting aren't very impressive: initially we only got
150-180kbps, and only recently, around 300kbps.
i know that it's wishful thinking to expect anything near 2Mbps, but i really
wasn't expecting the numbers to be that bad; i was expecting at least somewhere
in the 1.5Mbps range.
1.) Is it reasonable to expect those figures? The thing is that we're getting
more or less the same numbers(actually, a little better numbers) from our
backup link -- which doesn't even cost half of what we're paying for the link
in question. Even if the speedtest.net results suggest that we're hitting
1Mbps...well, fact of the matter is, we don't need 1-2mbps going to
speedtest.net, we need 2mbps going to our HK office B)
Right now i'm thinking in terms of the cost; i.e. if we're paying X times more
for this ISP, then the link should be at least X times faster than our backup
link. Mas reasonable po ba kung ganito ang reasoning?
2.) i read somewhere that the TCP window size can affect the speed; the
impression i got from some sites is that you can increase performance in orders
of magnitude. However, from my own testing, i find that the difference is
marginal once you hit around 8kb -- i.e. the iperf results didn't vary that
much when the specified window size is around 8Kb all the way up to 4Mb(there's
only a very significant difference when you set it at ridiculously small sizes,
e.g. 10 - 100 bytes). By default i think Linux sets it to 16kb, so right now
i'm inclined to just disregard its effect on the speed/testing.
3.) btw, are there any other alternatives to really get 2mbps going to our
remote site? Leased line perhaps?
tia
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