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Awesome, just awesome. Is it possible to use this algorithm in my machine and replace the existing one? Would that be too hard?

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We're trying to get there! Plan is to make a user-space process that uses Linux network namespaces to intercept the outgoing TCP connections of a subsidiary process (using DNAT) and then send datagrams according to whatever congestion-control mechanism you'd like.

But not there yet -- stay tuned.

Any reason you're trying to do this in usermode instead of using the existing framework for pluggable congestion control already present in the kernel?

Changing your algorithm is already as simple as echoing into a /proc file.

> Any reason you're trying to do this in usermode instead of using the existing framework

my guess would be that doing this in userland is way more forgiving than the kernel. once the basics are in place, moving it to kernel using the aforementioned pluggable congestion control f/w would be more or less 'mechanical'

You can run the NetBSD network stack in userspace (over real links), see http://rumpkernel.org/ which is an easy way of experimenting.

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