On Tue, 2013-10-15 at 15:56 +0200, Sébastien Dugué wrote: > On Tue, 15 Oct 2013 15:33:36 +0200 > Andi Kleen <a...@firstfloor.org> wrote: > > > > indeed, our typical workload is connected mode IPoIB on mlx4 QDR > > > hardware > > > where one cannot benefit from hardware offloads. > > > > Is this with sendfile? > > Tests were done with iperf at the time without any extra funky options, and > looking at the code it looks like it does plain write() / recv() on the > socket. >
But the csum cost is both for sender and receiver ? Please post the following : perf record -g "your iperf session" perf report | head -n 200 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
