Hi Daniel, On 01/10/2013 11:57 PM, Daniel Waddington wrote: > > On the subject of improving network stack performance, I observe 50% > less throughput on Genode+Fiasco.OC+LWIP versus Linux on exactly the > same Intel-based hardware. I am sending UDP packets; Linux @ 324K PPS > and Genode @ 167 KPPS. Using 64bit kernels. This is using > out-of-the-box Genode IPXE DDE with E1000 NIC card. > > Does this performance difference sound reasonable and expected? Is > there some expected significant performance overhead with using DDE as > opposed to a native NIC driver?
The drop may be reasonable, since we haven't optimized the IPXE driver yet. LWIP also has a performance impact compared to the native Linux TCP/IP stack, we already had a look at that, but couldn't get many insights. > My next step will be to look at raw ethernet packet performance. That's a got idea. Maybe you could simply drop the UDP packets at the ethernet driver and raise some statistics on the throughput. For performance optimizations you might have a look at http://genode.org/documentation/articles/pandaboard especially under the section 'Networking'. There we describe how we optimized the NIC for the Pandaboard and got it to about 90% of the Linux performance. Regards, Sebastian -- Sebastian Sumpf Genode Labs http://www.genode-labs.com · http://genode.org Genode Labs GmbH · Amtsgericht Dresden · HRB 28424 · Sitz Dresden Geschäftsführer: Dr.-Ing. Norman Feske, Christian Helmuth ------------------------------------------------------------------------------ Master HTML5, CSS3, ASP.NET, MVC, AJAX, Knockout.js, Web API and much more. Get web development skills now with LearnDevNow - 350+ hours of step-by-step video tutorials by Microsoft MVPs and experts. SALE $99.99 this month only -- learn more at: http://p.sf.net/sfu/learnmore_122812 _______________________________________________ Genode-main mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/genode-main
