Re: [PATCH v9 04/10] sched: Make sched entity usage tracking scale-invariant

2014-11-26 Thread Dietmar Eggemann
On 21/11/14 12:35, Morten Rasmussen wrote: > On Mon, Nov 03, 2014 at 04:54:41PM +, Vincent Guittot wrote: >> From: Morten Rasmussen >> Could we rename this patch to 'sched: Make usage tracking frequency scale-invariant'? The reason is, since we scale sched_avg::running_avg_sum according to

Re: [PATCH v9 04/10] sched: Make sched entity usage tracking scale-invariant

2014-11-26 Thread Dietmar Eggemann
On 21/11/14 12:35, Morten Rasmussen wrote: On Mon, Nov 03, 2014 at 04:54:41PM +, Vincent Guittot wrote: From: Morten Rasmussen morten.rasmus...@arm.com Could we rename this patch to 'sched: Make usage tracking frequency scale-invariant'? The reason is, since we scale

Re: [PATCH v9 04/10] sched: Make sched entity usage tracking scale-invariant

2014-11-21 Thread Morten Rasmussen
On Mon, Nov 03, 2014 at 04:54:41PM +, Vincent Guittot wrote: > From: Morten Rasmussen > > Apply frequency scale-invariance correction factor to usage tracking. s/usage/utilization/ > Each segment of the running_load_avg geometric series is now scaled by the > current frequency so the

Re: [PATCH v9 04/10] sched: Make sched entity usage tracking scale-invariant

2014-11-21 Thread Morten Rasmussen
On Mon, Nov 03, 2014 at 04:54:41PM +, Vincent Guittot wrote: From: Morten Rasmussen morten.rasmus...@arm.com Apply frequency scale-invariance correction factor to usage tracking. s/usage/utilization/ Each segment of the running_load_avg geometric series is now scaled by the current

[PATCH v9 04/10] sched: Make sched entity usage tracking scale-invariant

2014-11-03 Thread Vincent Guittot
From: Morten Rasmussen Apply frequency scale-invariance correction factor to usage tracking. Each segment of the running_load_avg geometric series is now scaled by the current frequency so the utilization_avg_contrib of each entity will be invariant with frequency scaling. As a result,

[PATCH v9 04/10] sched: Make sched entity usage tracking scale-invariant

2014-11-03 Thread Vincent Guittot
From: Morten Rasmussen morten.rasmus...@arm.com Apply frequency scale-invariance correction factor to usage tracking. Each segment of the running_load_avg geometric series is now scaled by the current frequency so the utilization_avg_contrib of each entity will be invariant with frequency