The network research lab at my school has a tool called CapProbe that
allows fast and accurate measuring of capacity estimation. I haven't
used it personally, but I know it relies on measuring the dispersion of
packet pairs. The paper from SIGCOMM 2004 is at:
http://www.cs.ucla.edu/NRL/CapProbe/files/04_SIGCOMM_CapProbe.pdf
The software can be downloaded from
http://www.cs.ucla.edu/NRL/CapProbe. Both kernel-level and user-level
versions are available for Linux.
- Mike
Quoting David Barrett <[EMAIL PROTECTED]>:
-----Original Message-----
From: coderman
Sent: Saturday, April 01, 2006 5:20 PM
To: Peer-to-peer development.
Subject: Re: [p2p-hackers] Hard question....
On 4/1/06, David Barrett <[EMAIL PROTECTED]> wrote:
> ...
> Incidentally, how are you measuring "available bandwidth"?
right now i pass the buck and let the user pick a suitable limit. if
excessive loss is detected continuously the stack can cut by half or
exit with error.
i'm still looking for better ways to do this; ideally it would be tied
to kernel level shaping and based on a historical view of channel
capacity.
Got it. Has anyone else had good experience trying to measure this
automatically in the real world?
-david
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