On Monday 05 October 2009, Frans Pop wrote: > With .32-rc3 I'm getting occasional skips from amarok while playing > music from an NFS share (3 today so far), something I've not had in a > long time. > > The reason looks to be that latencytop consistently shows 'iwlagn' as > the top affected process with "Scheduler: waiting for CPU". > Values of 100-140 ms occur frequently, but I've also seen higher values > (180, 207). I don't remember seeing iwlagn high in the list before, but > I have not checked earlier kernels yet. > > Added to that 'phy0' also frequently shows high with values of 25-75 ms. > > The system is otherwise essentially idle. Other processes typically show > a latency < 5 ms. If I give the system some work to do (like compiling a kernel), the latencies on iwlagn and phy0 disappear (values < 5 ms). Is this related to ondemand frequency scaling? -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
