Re: [RFC PATCH 0/3] sched: Introduce Window Assisted Load Tracking

2016-10-31 Thread Vikram Mulukutla
On 2016-10-28 01:49, Peter Zijlstra wrote: On Fri, Oct 28, 2016 at 12:57:05AM -0700, Vikram Mulukutla wrote: On 2016-10-28 00:49, Peter Zijlstra wrote: >On Fri, Oct 28, 2016 at 12:10:39AM -0700, Vikram Mulukutla wrote: >>This RFC patch has been tested on live X86 machines with the following >>sa

Re: [RFC PATCH 0/3] sched: Introduce Window Assisted Load Tracking

2016-10-28 Thread Peter Zijlstra
On Fri, Oct 28, 2016 at 12:55:52AM -0700, Vikram Mulukutla wrote: > On 2016-10-28 00:29, Peter Zijlstra wrote: > >On Fri, Oct 28, 2016 at 12:10:39AM -0700, Vikram Mulukutla wrote: > >> > >>We propose Window-Assisted Load Tracking (WALT) as an alternative or > >>additional load tracking scheme in li

Re: [RFC PATCH 0/3] sched: Introduce Window Assisted Load Tracking

2016-10-28 Thread Peter Zijlstra
On Fri, Oct 28, 2016 at 12:57:05AM -0700, Vikram Mulukutla wrote: > On 2016-10-28 00:49, Peter Zijlstra wrote: > >On Fri, Oct 28, 2016 at 12:10:39AM -0700, Vikram Mulukutla wrote: > >>This RFC patch has been tested on live X86 machines with the following > >>sanity > >>and benchmark results (thanks

Re: [RFC PATCH 0/3] sched: Introduce Window Assisted Load Tracking

2016-10-28 Thread Vikram Mulukutla
On 2016-10-28 00:49, Peter Zijlstra wrote: On Fri, Oct 28, 2016 at 12:10:39AM -0700, Vikram Mulukutla wrote: This RFC patch has been tested on live X86 machines with the following sanity and benchmark results (thanks to Juri Lelli, Dietmar Eggeman, Patrick Bellasi for initial code reviews): (

Re: [RFC PATCH 0/3] sched: Introduce Window Assisted Load Tracking

2016-10-28 Thread Vikram Mulukutla
On 2016-10-28 00:29, Peter Zijlstra wrote: On Fri, Oct 28, 2016 at 12:10:39AM -0700, Vikram Mulukutla wrote: We propose Window-Assisted Load Tracking (WALT) as an alternative or additional load tracking scheme in lieu of or along with PELT, one that in our estimation better tracks task demand

Re: [RFC PATCH 0/3] sched: Introduce Window Assisted Load Tracking

2016-10-28 Thread Peter Zijlstra
On Fri, Oct 28, 2016 at 12:10:39AM -0700, Vikram Mulukutla wrote: > This RFC patch has been tested on live X86 machines with the following sanity > and benchmark results (thanks to Juri Lelli, Dietmar Eggeman, Patrick Bellasi > for initial code reviews): > > (Tested on an Intel i7 2nd generation C

Re: [RFC PATCH 0/3] sched: Introduce Window Assisted Load Tracking

2016-10-28 Thread Peter Zijlstra
On Fri, Oct 28, 2016 at 12:10:39AM -0700, Vikram Mulukutla wrote: > > We propose Window-Assisted Load Tracking (WALT) as an alternative or > additional > load tracking scheme in lieu of or along with PELT, one that in our estimation > better tracks task demand and CPU utilization especially for u

[RFC PATCH 0/3] sched: Introduce Window Assisted Load Tracking

2016-10-28 Thread Vikram Mulukutla
We propose Window-Assisted Load Tracking (WALT) as an alternative or additional load tracking scheme in lieu of or along with PELT, one that in our estimation better tracks task demand and CPU utilization especially for use cases on mobile devices. WALT was conceived by Srivatsa Vaddagiri to provi