On Tue, Jun 04, 2013 at 11:38:02AM +0200, Peter Zijlstra wrote: > > Oops, the most interesting part did not make it in. Very sorry :) Here: > > > > # ./tools/perf/perf stat -I 8 -a -e L1-dcache-load-misses:k hwclock --test > > Mon 03 Jun 2013 09:32:49 AM EDT -0.719514 seconds > > > > Performance counter stats for process id '8': > > > > 447 L1-dcache-load-misses > > > > I think that is very much expected; except in the case where you spend > _all_ your time in IRQ handlers, they'll pretty much always miss l1 > cache.
The emphasis was on the fact it indeed could be measured for a particular ISR ;) -- Regards, Alexander Gordeev [email protected] -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
