> > Is there a reason why SO_TIMESTAMP does not work with TCP sockets
> > but only with RAW and UDP ?
>
> Because it doesn't really make sense?

But it would. It would let me know how long it took the process to get to the
data
I�m currently reading from the socket. (and notify operator to buy more hardware
if it took too long)
>
> Since the TCP stream may be arbitrarily re-ordered, knowing when a
> packet arrived is not particularly useful to an application.  If you
> really care, you should probably use BPF instead.
>
Are you suggesting to reimplement TCP sockets in userland?

Pete



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