From: Fred Gray <fegray@socrates.berkeley.edu> Date: Wed, 30 Apr 2003 00:20:52 -0700 As you see, the MVME5100 board is able to saturate the gigabit link, at least with large frames and zero-copy. However, the performance doesn't seem to scale down in any reasonable way. So, it's not a problem with the test setup, and it's not simply the fact that it's a PowerPC. I recall from the profiling that PPC interrupt handling showed up clearly as the biggest time consumer. If the interrupt controller is even slightly different between your test machines, that would explain a lot. I wish some PPC expert would comment on why the PPC interrupt code consumes so much time. - : send the line "unsubscribe linux-net" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
