On Mon, 2014-07-21 at 09:42 -0700, Andi Kleen wrote: > FWIW the main problem is currently that switch-through-idle is so > slow. I think improving that would give a boost to far more > situations.
Two high frequency idle enter/exit suckage spots: 1) nohz (tick) - it's expensive to start/stop tick on every micro-idle, throttle it or something. 2) ondemand governor - tweak silly default settings to reflect the reality that we routinely schedule communicating threads cross core. (3. seek/destroy fastpath cycles, damn things multiply over time) -Mike -- 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/
