On 10/28/13 10:24 AM, Ingo Molnar wrote:
The most accurate method of measurement for such single-threaded workloads is something like:taskset 0x1 perf stat -a -C 1 --repeat 20 ... this will bind your workload to CPU#0, and will do PMU measurements only there - without mixing in other CPUs or workloads.
you can drop the -a if you only want a specific CPU (-C arg). And -C in perf is cpu number starting with 0, so in your example above -C 1 means cpu1, not cpu0.
David -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
