Messages in this thread | | | Date | Tue, 8 Sep 2009 02:24:15 +0300 | From | Pekka Pietikainen <> | Subject | Re: BFS vs. mainline scheduler benchmarks and measurements |
| |
On Mon, Sep 07, 2009 at 10:57:01PM +0200, Ingo Molnar wrote: > > > Could you profile it please? Also, what's the context-switch rate? > > > > As far as I can tell, the broadcom mips architecture does not have > > profiling support. It does only have some proprietary profiling > > registers that nobody wrote kernel support for, yet. > Well, what does 'vmstat 1' show - how many context switches are > there per second on the iperf server? In theory if it's a truly > saturated box, there shouldnt be many - just a single iperf task Yay, finally something that's measurable in this thread \o/
Gigabit Ethernet iperf on an Atom or so might be something that shows similar effects yet is debuggable. Anyone feel like taking a shot?
That beast doing iperf probably ends up making it go quite close to it's limits (IO, mem bw, cpu). IIRC the routing/bridging performance is something like 40Mbps (depends a lot on the model, corresponds pretty well with the Mhz of the beast).
Maybe not totally unlike what make -j16 does to a 1-4 core box?
| |