Hi, On Thu, 03 Jan 2013 14:41:15 -0800, Eric Dumazet wrote: > On Thu, 2013-01-03 at 12:46 -0800, Andrew Morton wrote: >> Can this change cause worsened latencies in some situations? Say there >> are a large number of short-running actions queued. Presently we'll >> dispatch ten of them and return. With this change we'll dispatch many >> more of them - however many consume 2ms. So worst-case latency >> increases from "10 * not-much" to "2 ms". > > I tried to reproduce such workload but couldnt. 2 ms (or more exactly 1 > to 2 ms given the jiffies/HZ granularity) is about the time needed to > process 1000 frames on current hardware.
Probably a silly question: Why not using ktime rather than jiffies for this? Thanks, Namhyung -- 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/