Messages in this thread | | | Subject | Re: [PATCH] x86: Run checksumming in parallel accross multiple alu's | From | Eric Dumazet <> | Date | Tue, 15 Oct 2013 07:06:25 -0700 |
| |
On Tue, 2013-10-15 at 15:56 +0200, Sébastien Dugué wrote: > On Tue, 15 Oct 2013 15:33:36 +0200 > Andi Kleen <andi@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 majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |