ndt-users list created

[Aris Adamantiadis <>]

Hi Richard,

The two response I got about compression in the VPN stream seem really
sound and reasonable.
I agree with you that generating pseudorandom data efficiently is not
easy, I had this problem when benchmarking SSH streams, the pseudorandom
data generation took more CPU than the actual encryption of the stream.
If I get any idea, I'll let you know.

Aris

Richard Carlson a écrit :
> Aris;
> 
> The NDT system fills a data buffer with printable characters and then
> repeatedly sends this buffer to the receiving host.  The sending host
> keeps track of the number of bytes it sent, and the time it took to send
> them.  These 2 values are used to calculate the measured speed.
> 
> The NDT data flows consist of a repetitive pattern of characters that
> may be compressible.  I would look into the VPN package to see if it is
> using compression techniques.
> 
> Right now I am not looking at ways to randomize the data generation
> process, but would do so if this proves to be a problem for a large
> number of users.
> 
> Rich
>