On Wednesday, January 11, 2012, Antti P Miettinen wrote: > "Rafael J. Wysocki" <rjw@xxxxxxx> writes: > > On Monday, January 09, 2012, Antti P Miettinen wrote: > >> Hmm.. congestion is an issue for latency requests as well. > > > > I'm not sure what you mean. Care to elaborate? > > > > Rafael > > Well, I was just thinking that latencies can get hurt by system load > just like throughput can suffer from load. The idea with latencies is different. Latency constraints specify how much time a given resource may be unavailable (due to power management). So, when putting the resource into a low-power state we only need to consider the minimum of those. > By blocking sleep states we can address "system level latency" or "best case > latency" but as far as I can see PM QoS does not address "worst case > latency". I'm not sure what you mean by "worst case latency". Thanks, Rafael _______________________________________________ linux-pm mailing list linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linuxfoundation.org/mailman/listinfo/linux-pm
