Re: way of figuring out total number of retransmitted packets on a TCP socket?

[Lennert Buytenhek <buytenh@xxxxxxxxxxxxxx>]

On Wed, Oct 20, 2004 at 09:37:39PM -0700, David S. Miller wrote:

> Please give this 2.6.x patch a spin:

Works quite nicely, thank you very much.  I've attached the sources
of the tools that we're using in combination with this -- basically
just a discard server and a client.  (You need the libivykis async
I/O lib installed to compile the server.)

A 1GB cross-atlantic transfer (~715kpackets) over a proper provider
typically shows something like this:  (Discard server is on a GbE
connection in LA, the transmitter on FastE in Amsterdam.)

        [...]
        tcpi_total_retrans      2


The same test done over a second-rate provider:

        [...]
        tcpi_total_retrans      3482


--L

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