Network Parameters on Subscriber side feelings
hi, is there any work or research on measuring method for subscriber (customer)side feelings of network service? It seems that e2e ping delay, packet loss may miss some important factor when we consider subscriber's feelings. Joe __________________________________ Yahoo! Movies - Search movie info and celeb profiles and photos. http://sg.movies.yahoo.com/
is there any work or research on measuring method for subscriber (customer)side feelings of network service?
It seems that e2e ping delay, packet loss may miss some important factor when we consider subscriber's feelings.
Although zero packet loss is a sign of very low jitter, you can't generalize that if there is packet loss. Since jitter is important to VoIP and some media streaming, you might want to measure that directly. Of course, if your ping delay measurement is fine-grained enough, then you can calculate the jitter based on the difference between the maximum e2e ping delay and the minimum over a period of time. It's better if the period of time is short enough so that you can learn what your most likely jitter vaues are, not just the worst case. --Michael Dillon
michael.dillon@bt.com wrote:
is there any work or research on measuring method for subscriber (customer)side feelings of network service?
It seems that e2e ping delay, packet loss may miss some important factor when we consider subscriber's feelings.
Although zero packet loss is a sign of very low jitter, you can't generalize that if there is packet loss. Since jitter is important to VoIP and some media streaming, you might want to measure that directly. Of course, if your ping delay measurement is fine-grained enough, then you can calculate the jitter based on the difference between the maximum e2e ping delay and the minimum over a period of time. It's better if the period of time is short enough so that you can learn what your most likely jitter vaues are, not just the worst case.
--Michael Dillon
We have been doing a lot of work on how to measure the subscriber "experience" of a network. e2e ping delay actually is quite a good measure so long as you use it correctly. However we found that using tools such as iperf to take periodic measurments of TCP throughput, UDP throughput and packet loss was far more interesting. -- Leigh Porter
On Mon, 18 Jun 2007 13:02:55 +0100 Leigh Porter <leigh.porter@ukbroadband.com> wrote:
michael.dillon@bt.com wrote:
is there any work or research on measuring method for subscriber (customer)side feelings of network service?
<snip>
We have been doing a lot of work on how to measure the subscriber "experience" of a network. e2e ping delay actually is quite a good measure so long as you use it correctly. However we found that using tools such as iperf to take periodic measurments of TCP throughput, UDP throughput and packet loss was far more interesting.
-- Leigh Porter
You might also find this OWAMP (One Way Active Measurement Protocol) AKA "One Way Ping" implementation to be quite useful for that sort of thing. http://e2epi.internet2.edu/owamp/ -- "Sheep are slow and tasty, and therefore must remain constantly alert." - Bruce Schneier, "Beyond Fear"
participants (4)
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Joe Shen -
Leigh Porter -
Mark Smith -
michael.dillon＠bt.com