Re: [PATCH RESEND v9 00/10] sched: consolidation of CPU capacity and usage

2015-02-24 Thread Vincent Guittot
On 24 February 2015 at 12:29, Morten Rasmussen wrote: > On Tue, Feb 24, 2015 at 10:38:29AM +, Vincent Guittot wrote: >> On 23 February 2015 at 16:45, Morten Rasmussen >> wrote: >> > On Fri, Feb 20, 2015 at 02:54:09PM +, Vincent Guittot wrote: >> >> On 20 February 2015 at 15:35, Morten

Re: [PATCH RESEND v9 00/10] sched: consolidation of CPU capacity and usage

2015-02-24 Thread Morten Rasmussen
On Tue, Feb 24, 2015 at 10:38:29AM +, Vincent Guittot wrote: > On 23 February 2015 at 16:45, Morten Rasmussen > wrote: > > On Fri, Feb 20, 2015 at 02:54:09PM +, Vincent Guittot wrote: > >> On 20 February 2015 at 15:35, Morten Rasmussen > >> wrote: > >> > On Fri, Feb 20, 2015 at

Re: [PATCH RESEND v9 00/10] sched: consolidation of CPU capacity and usage

2015-02-24 Thread Vincent Guittot
On 23 February 2015 at 16:45, Morten Rasmussen wrote: > On Fri, Feb 20, 2015 at 02:54:09PM +, Vincent Guittot wrote: >> On 20 February 2015 at 15:35, Morten Rasmussen >> wrote: >> > On Fri, Feb 20, 2015 at 02:13:21PM +, Vincent Guittot wrote: >> >> On 20 February 2015 at 12:52, Morten

Re: [PATCH RESEND v9 00/10] sched: consolidation of CPU capacity and usage

2015-02-24 Thread Vincent Guittot
On 23 February 2015 at 16:45, Morten Rasmussen morten.rasmus...@arm.com wrote: On Fri, Feb 20, 2015 at 02:54:09PM +, Vincent Guittot wrote: On 20 February 2015 at 15:35, Morten Rasmussen morten.rasmus...@arm.com wrote: On Fri, Feb 20, 2015 at 02:13:21PM +, Vincent Guittot wrote: On

Re: [PATCH RESEND v9 00/10] sched: consolidation of CPU capacity and usage

2015-02-24 Thread Morten Rasmussen
On Tue, Feb 24, 2015 at 10:38:29AM +, Vincent Guittot wrote: On 23 February 2015 at 16:45, Morten Rasmussen morten.rasmus...@arm.com wrote: On Fri, Feb 20, 2015 at 02:54:09PM +, Vincent Guittot wrote: On 20 February 2015 at 15:35, Morten Rasmussen morten.rasmus...@arm.com wrote:

Re: [PATCH RESEND v9 00/10] sched: consolidation of CPU capacity and usage

2015-02-24 Thread Vincent Guittot
On 24 February 2015 at 12:29, Morten Rasmussen morten.rasmus...@arm.com wrote: On Tue, Feb 24, 2015 at 10:38:29AM +, Vincent Guittot wrote: On 23 February 2015 at 16:45, Morten Rasmussen morten.rasmus...@arm.com wrote: On Fri, Feb 20, 2015 at 02:54:09PM +, Vincent Guittot wrote: On

Re: [PATCH RESEND v9 00/10] sched: consolidation of CPU capacity and usage

2015-02-23 Thread Morten Rasmussen
On Fri, Feb 20, 2015 at 02:54:09PM +, Vincent Guittot wrote: > On 20 February 2015 at 15:35, Morten Rasmussen > wrote: > > On Fri, Feb 20, 2015 at 02:13:21PM +, Vincent Guittot wrote: > >> On 20 February 2015 at 12:52, Morten Rasmussen > >> wrote: > >> > On Fri, Feb 20, 2015 at

Re: [PATCH RESEND v9 00/10] sched: consolidation of CPU capacity and usage

2015-02-23 Thread Morten Rasmussen
On Fri, Feb 20, 2015 at 02:54:09PM +, Vincent Guittot wrote: On 20 February 2015 at 15:35, Morten Rasmussen morten.rasmus...@arm.com wrote: On Fri, Feb 20, 2015 at 02:13:21PM +, Vincent Guittot wrote: On 20 February 2015 at 12:52, Morten Rasmussen morten.rasmus...@arm.com wrote:

Re: [PATCH RESEND v9 00/10] sched: consolidation of CPU capacity and usage

2015-02-20 Thread Vincent Guittot
On 20 February 2015 at 15:35, Morten Rasmussen wrote: > On Fri, Feb 20, 2015 at 02:13:21PM +, Vincent Guittot wrote: >> On 20 February 2015 at 12:52, Morten Rasmussen >> wrote: >> > On Fri, Feb 20, 2015 at 11:34:47AM +, Peter Zijlstra wrote: >> >> On Thu, Feb 19, 2015 at 12:49:40PM

Re: [PATCH RESEND v9 00/10] sched: consolidation of CPU capacity and usage

2015-02-20 Thread Morten Rasmussen
On Fri, Feb 20, 2015 at 02:13:21PM +, Vincent Guittot wrote: > On 20 February 2015 at 12:52, Morten Rasmussen > wrote: > > On Fri, Feb 20, 2015 at 11:34:47AM +, Peter Zijlstra wrote: > >> On Thu, Feb 19, 2015 at 12:49:40PM +, Morten Rasmussen wrote: > >> > >> > Also, it still not

Re: [PATCH RESEND v9 00/10] sched: consolidation of CPU capacity and usage

2015-02-20 Thread Vincent Guittot
On 20 February 2015 at 12:52, Morten Rasmussen wrote: > On Fri, Feb 20, 2015 at 11:34:47AM +, Peter Zijlstra wrote: >> On Thu, Feb 19, 2015 at 12:49:40PM +, Morten Rasmussen wrote: >> >> > Also, it still not clear why patch 10 uses relative capacity reduction >> > instead of absolute

Re: [PATCH RESEND v9 00/10] sched: consolidation of CPU capacity and usage

2015-02-20 Thread Morten Rasmussen
On Fri, Feb 20, 2015 at 11:34:47AM +, Peter Zijlstra wrote: > On Thu, Feb 19, 2015 at 12:49:40PM +, Morten Rasmussen wrote: > > > Also, it still not clear why patch 10 uses relative capacity reduction > > instead of absolute capacity available to CFS tasks. > > As present in your

Re: [PATCH RESEND v9 00/10] sched: consolidation of CPU capacity and usage

2015-02-20 Thread Peter Zijlstra
On Thu, Feb 19, 2015 at 12:49:40PM +, Morten Rasmussen wrote: > Also, it still not clear why patch 10 uses relative capacity reduction > instead of absolute capacity available to CFS tasks. As present in your asymmetric big and small systems? Yes it would be unfortunate to migrate a task to

Re: [PATCH RESEND v9 00/10] sched: consolidation of CPU capacity and usage

2015-02-20 Thread Peter Zijlstra
On Thu, Feb 19, 2015 at 12:49:40PM +, Morten Rasmussen wrote: Also, it still not clear why patch 10 uses relative capacity reduction instead of absolute capacity available to CFS tasks. As present in your asymmetric big and small systems? Yes it would be unfortunate to migrate a task to an

Re: [PATCH RESEND v9 00/10] sched: consolidation of CPU capacity and usage

2015-02-20 Thread Morten Rasmussen
On Fri, Feb 20, 2015 at 11:34:47AM +, Peter Zijlstra wrote: On Thu, Feb 19, 2015 at 12:49:40PM +, Morten Rasmussen wrote: Also, it still not clear why patch 10 uses relative capacity reduction instead of absolute capacity available to CFS tasks. As present in your asymmetric big

Re: [PATCH RESEND v9 00/10] sched: consolidation of CPU capacity and usage

2015-02-20 Thread Vincent Guittot
On 20 February 2015 at 12:52, Morten Rasmussen morten.rasmus...@arm.com wrote: On Fri, Feb 20, 2015 at 11:34:47AM +, Peter Zijlstra wrote: On Thu, Feb 19, 2015 at 12:49:40PM +, Morten Rasmussen wrote: Also, it still not clear why patch 10 uses relative capacity reduction instead of

Re: [PATCH RESEND v9 00/10] sched: consolidation of CPU capacity and usage

2015-02-20 Thread Morten Rasmussen
On Fri, Feb 20, 2015 at 02:13:21PM +, Vincent Guittot wrote: On 20 February 2015 at 12:52, Morten Rasmussen morten.rasmus...@arm.com wrote: On Fri, Feb 20, 2015 at 11:34:47AM +, Peter Zijlstra wrote: On Thu, Feb 19, 2015 at 12:49:40PM +, Morten Rasmussen wrote: Also, it

Re: [PATCH RESEND v9 00/10] sched: consolidation of CPU capacity and usage

2015-02-20 Thread Vincent Guittot
On 20 February 2015 at 15:35, Morten Rasmussen morten.rasmus...@arm.com wrote: On Fri, Feb 20, 2015 at 02:13:21PM +, Vincent Guittot wrote: On 20 February 2015 at 12:52, Morten Rasmussen morten.rasmus...@arm.com wrote: On Fri, Feb 20, 2015 at 11:34:47AM +, Peter Zijlstra wrote: On

Re: [PATCH RESEND v9 00/10] sched: consolidation of CPU capacity and usage

2015-02-19 Thread Morten Rasmussen
On Thu, Jan 15, 2015 at 10:09:20AM +, Vincent Guittot wrote: > This patchset consolidates several changes in the capacity and the usage > tracking of the CPU. It provides a frequency invariant metric of the usage of > CPUs and generally improves the accuracy of load/usage tracking in the >

Re: [PATCH RESEND v9 00/10] sched: consolidation of CPU capacity and usage

2015-02-19 Thread Morten Rasmussen
On Thu, Jan 15, 2015 at 10:09:20AM +, Vincent Guittot wrote: This patchset consolidates several changes in the capacity and the usage tracking of the CPU. It provides a frequency invariant metric of the usage of CPUs and generally improves the accuracy of load/usage tracking in the

[PATCH RESEND v9 00/10] sched: consolidation of CPU capacity and usage

2015-01-15 Thread Vincent Guittot
This patchset consolidates several changes in the capacity and the usage tracking of the CPU. It provides a frequency invariant metric of the usage of CPUs and generally improves the accuracy of load/usage tracking in the scheduler. The frequency invariant metric is the foundation required for the

[PATCH RESEND v9 00/10] sched: consolidation of CPU capacity and usage

2015-01-15 Thread Vincent Guittot
This patchset consolidates several changes in the capacity and the usage tracking of the CPU. It provides a frequency invariant metric of the usage of CPUs and generally improves the accuracy of load/usage tracking in the scheduler. The frequency invariant metric is the foundation required for the