2013/2/7 Christoph Lameter <c...@linux.com>: > On Thu, 7 Feb 2013, Frederic Weisbecker wrote: > >> Not with hrtick. > > hrtick? Did we not already try that a couple of years back and it turned > out that the overhead of constantly reprogramming a timer via the PCI bus > was causing too much of a performance regression?
Yeah Peter said that especially reprogramming the clock everytime we call schedule() was killing the performances. Now may be on some workloads, with the tick stopped, we can find some new results. -- 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/
