On Mon, May 10, 2010 at 6:46 AM, Ross Walker <rswwalker at gmail.com> wrote: > On May 10, 2010, at 8:53 AM, JohnS <jses27 at gmail.com> wrote: >> You say efficiency loss. That could mean anything from the power >> input >> down to the kernel. It looks like that can be determined by oprofile >> and latencytop. Latencytop will give you the millisecond time for >> execution. As far as Oprofile maybe Ross will indeed fill us in if he >> can. > > Oprofile will show where those precious latencies timings are being > used. It of course adds latency itself, so this should be factored > into the latency timings. > > It will time all kernel operations then you can drill down into > particular modules/routines to see more granularity. > > Needs debug symbols to be fully useful. Can provide timings as source > code annotations. I never thought someone would run oprofile with the RT kernel. I can upload debuginfo if anyone needs it. Akemi