On Tue, Nov 21, 2006 at 12:52:56AM +0100, Hubert Feyrer wrote:
> On Mon, 20 Nov 2006, Matthias Scheler wrote:
> >I've uploaded a 900MB file FTP over TCPv6 (using a kernel producing some
> >extra debugging output when TSOv6 is used) and compared the SHA512 hashes
> >of the source and destination file.
> 
> What was the time and cpu utilization difference (assuming that's the 
> point of TSO)?

I'm not sure how to measure that properly. As a quick test I used "rcp"
to transfer a 768MB file over IPv6 over Gigabit ethernet to "/dev/null"
on the remote machine:

With TSOv6:
0.05s user 4.13s system 20% cpu 20.189 total

Without TSOv6:
0.08s user 4.33s system 21% cpu 20.447 total

Second run with TSOv6:
0.08s user 4.33s system 21% cpu 20.447 total

Those numbers don't look conclusive to me.

	Kind regards

-- 
Matthias Scheler                                  http://zhadum.org.uk/