> I did a quite a bit of ftracing to look for spots inside the handler > which were taking large amounts of time. There were none. The > execution time was spread very evenly over the entire nmi handler. It > didn't appear to be any individual hot cachelines or doing something > silly like sitting in a loop handling lots of PMU events.
In some cases callgraphs seemed to be quite expensive (large fraction of the handler time) -Andi -- 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/