[festoid]

Originally Posted by APS

Has anyone noticed that the Speedtest in the navbar gives different, more pessimistic answers, than Robin Walkers on ntlhellworld. This is not due to the different files sizes but the calculations from bytes per sec to bits per second which are different by 10% or so. Example:

Robnin Walker

Fri, 27 Jan 2006 18:14:45 UTC
1st 128K took 719 ms = 182298 Bytes/sec = approx 1517 kbits/sec
2nd 128K took 703 ms = 186447 Bytes/sec = approx 1551 kbits/sec
3rd 128K took 718 ms = 182552 Bytes/sec = approx 1519 kbits/sec
4th 128K took 704 ms = 186182 Bytes/sec = approx 1549 kbits/sec


Cableforum a little later:

Fri, 27 Jan 2006 18:20:17 UTC

1st 512K took 2827 ms = 181.1 KB/sec, approx 1376 Kbps, 1.3 Mbps
2nd 512K took 2828 ms = 181 KB/sec, approx 1376 Kbps, 1.3 Mbps
3rd 512K took 2858 ms = 179.1 KB/sec, approx 1361 Kbps, 1.3 Mbps
4th 512K took 2875 ms = 178.1 KB/sec, approx 1354 Kbps, 1.3 Mbps

Overall Average Speed = approx 1367 Kbps, 1.3 Mbps

Look at the figures around 182 KB/sec which are translated to 1520 for RW and 1370 for Cableforum.

Who has the maths wrong?

APS

The file sizes are 4 times larger on cableforum, could account for the differences.