In reply to a post by RobertoS:

It isn't an historical value, but apparently can fail to update.

To me that's a contradiction, if it needs "updating" it has to be historical, shirley ? ie it's a stored historical value from the last time it was updated, rather than a real time "ask the BRAS what the IP profile is right now" thing.

It makes sense to have a historical / buffered / <insert other name> record for a better response time. The speedtest can be ponderous enough as it is.

My OS tells me the instantaneous transfer rate through the network interface, why not sample that through the duration of a fixed period of streaming data and record the average - no influence of buffering ?

In reply to a post by GonePostal:

(1) The pipe to the tap has a nominal flow capacity of 2 unite per second but the internal resistance in the pipe means that only 1.8 units per second can physically flow through the pipe.

(2) The outlet rate from the sink will then be 2.7 units per second.

How can (2) ever happen when (1) says only 1.8 units can physically flow?

In reply to a post by BatBoy:

How can (2) ever happen when (1) says only 1.8 units can physically flow?

1.8 can flow in to the sink, 2 can flow out.

In = Out + Accumulation

negative accumulation = emptying the sink at the same time as water is running in.

Not a great analogy TBH.

If only 2 can flow out, how can 2.7 flow out?

Edited by deleted (Sun 28-Jul-13 10:33:14)

only 2 can flow in - 2 is the limit to the tap, not from the sink

What's the limit from the sink?

he didn't specify a limit on the outlet from from the sink ?

Maybe it's totally unlimited?

Post deleted by GonePostal