Re: [v4.8-rc1 Regression] sched/fair: Apply more PELT fixes

On Wed, Oct 19, 2016 at 07:41:36PM +0200, Vincent Guittot wrote: > On 19 October 2016 at 15:30, Morten Rasmussen > wrote: > > On Tue, Oct 18, 2016 at 01:56:51PM +0200, Vincent Guittot wrote: > >> Le Tuesday 18 Oct 2016 à 12:34:12 (+0200), Peter Zijlstra a écrit : > >> >

Re: [v4.8-rc1 Regression] sched/fair: Apply more PELT fixes

On Wed, Oct 19, 2016 at 07:41:36PM +0200, Vincent Guittot wrote: > On 19 October 2016 at 15:30, Morten Rasmussen > wrote: > > On Tue, Oct 18, 2016 at 01:56:51PM +0200, Vincent Guittot wrote: > >> Le Tuesday 18 Oct 2016 à 12:34:12 (+0200), Peter Zijlstra a écrit : > >> > On Tue, Oct 18, 2016 at

Re: [v4.8-rc1 Regression] sched/fair: Apply more PELT fixes

On 19 October 2016 at 17:33, Dietmar Eggemann wrote: > On 19/10/16 12:25, Vincent Guittot wrote: >> On 19 October 2016 at 11:46, Dietmar Eggemann >> wrote: >>> On 18/10/16 12:56, Vincent Guittot wrote: Le Tuesday 18 Oct 2016 à 12:34:12

Re: [v4.8-rc1 Regression] sched/fair: Apply more PELT fixes

On 19 October 2016 at 17:33, Dietmar Eggemann wrote: > On 19/10/16 12:25, Vincent Guittot wrote: >> On 19 October 2016 at 11:46, Dietmar Eggemann >> wrote: >>> On 18/10/16 12:56, Vincent Guittot wrote: Le Tuesday 18 Oct 2016 à 12:34:12 (+0200), Peter Zijlstra a écrit : > On Tue, Oct

Re: [v4.8-rc1 Regression] sched/fair: Apply more PELT fixes

On 19 October 2016 at 15:30, Morten Rasmussen wrote: > On Tue, Oct 18, 2016 at 01:56:51PM +0200, Vincent Guittot wrote: >> Le Tuesday 18 Oct 2016 à 12:34:12 (+0200), Peter Zijlstra a écrit : >> > On Tue, Oct 18, 2016 at 11:45:48AM +0200, Vincent Guittot wrote: >> > > On

Re: [v4.8-rc1 Regression] sched/fair: Apply more PELT fixes

On 19 October 2016 at 15:30, Morten Rasmussen wrote: > On Tue, Oct 18, 2016 at 01:56:51PM +0200, Vincent Guittot wrote: >> Le Tuesday 18 Oct 2016 à 12:34:12 (+0200), Peter Zijlstra a écrit : >> > On Tue, Oct 18, 2016 at 11:45:48AM +0200, Vincent Guittot wrote: >> > > On 18 October 2016 at 11:07,

Re: [v4.8-rc1 Regression] sched/fair: Apply more PELT fixes

On Wed, Oct 19, 2016 at 04:33:03PM +0100, Dietmar Eggemann wrote: > On 19/10/16 12:25, Vincent Guittot wrote: > > On 19 October 2016 at 11:46, Dietmar Eggemann > > wrote: > >> On 18/10/16 12:56, Vincent Guittot wrote: > >>> Le Tuesday 18 Oct 2016 à 12:34:12 (+0200),

Re: [v4.8-rc1 Regression] sched/fair: Apply more PELT fixes

On Wed, Oct 19, 2016 at 04:33:03PM +0100, Dietmar Eggemann wrote: > On 19/10/16 12:25, Vincent Guittot wrote: > > On 19 October 2016 at 11:46, Dietmar Eggemann > > wrote: > >> On 18/10/16 12:56, Vincent Guittot wrote: > >>> Le Tuesday 18 Oct 2016 à 12:34:12 (+0200), Peter Zijlstra a écrit : >

Re: [v4.8-rc1 Regression] sched/fair: Apply more PELT fixes

On Tue, Oct 18, 2016 at 01:56:51PM +0200, Vincent Guittot wrote: > Le Tuesday 18 Oct 2016 à 12:34:12 (+0200), Peter Zijlstra a écrit : > > On Tue, Oct 18, 2016 at 11:45:48AM +0200, Vincent Guittot wrote: > > > On 18 October 2016 at 11:07, Peter Zijlstra wrote: > > > > So

Re: [v4.8-rc1 Regression] sched/fair: Apply more PELT fixes

On Tue, Oct 18, 2016 at 01:56:51PM +0200, Vincent Guittot wrote: > Le Tuesday 18 Oct 2016 à 12:34:12 (+0200), Peter Zijlstra a écrit : > > On Tue, Oct 18, 2016 at 11:45:48AM +0200, Vincent Guittot wrote: > > > On 18 October 2016 at 11:07, Peter Zijlstra wrote: > > > > So aside from funny BIOSes,

Re: [v4.8-rc1 Regression] sched/fair: Apply more PELT fixes

On Tue, Oct 18, 2016 at 01:56:51PM +0200, Vincent Guittot wrote: > --- > kernel/sched/fair.c | 9 - > 1 file changed, 8 insertions(+), 1 deletion(-) > > diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c > index 8b03fb5..89776ac 100644 > --- a/kernel/sched/fair.c > +++

Re: [v4.8-rc1 Regression] sched/fair: Apply more PELT fixes

On Tue, Oct 18, 2016 at 01:56:51PM +0200, Vincent Guittot wrote: > --- > kernel/sched/fair.c | 9 - > 1 file changed, 8 insertions(+), 1 deletion(-) > > diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c > index 8b03fb5..89776ac 100644 > --- a/kernel/sched/fair.c > +++

Re: [v4.8-rc1 Regression] sched/fair: Apply more PELT fixes

On 18/10/16 12:56, Vincent Guittot wrote: > Le Tuesday 18 Oct 2016 à 12:34:12 (+0200), Peter Zijlstra a écrit : >> On Tue, Oct 18, 2016 at 11:45:48AM +0200, Vincent Guittot wrote: >>> On 18 October 2016 at 11:07, Peter Zijlstra wrote: [...] > > The patch below fixes the

Re: [v4.8-rc1 Regression] sched/fair: Apply more PELT fixes

On 18/10/16 12:56, Vincent Guittot wrote: > Le Tuesday 18 Oct 2016 à 12:34:12 (+0200), Peter Zijlstra a écrit : >> On Tue, Oct 18, 2016 at 11:45:48AM +0200, Vincent Guittot wrote: >>> On 18 October 2016 at 11:07, Peter Zijlstra wrote: [...] > > The patch below fixes the issue on my platform:

Re: [v4.8-rc1 Regression] sched/fair: Apply more PELT fixes

On 19 October 2016 at 11:46, Dietmar Eggemann wrote: > On 18/10/16 12:56, Vincent Guittot wrote: >> Le Tuesday 18 Oct 2016 à 12:34:12 (+0200), Peter Zijlstra a écrit : >>> On Tue, Oct 18, 2016 at 11:45:48AM +0200, Vincent Guittot wrote: On 18 October 2016 at 11:07,

Re: [v4.8-rc1 Regression] sched/fair: Apply more PELT fixes

On 19 October 2016 at 11:46, Dietmar Eggemann wrote: > On 18/10/16 12:56, Vincent Guittot wrote: >> Le Tuesday 18 Oct 2016 à 12:34:12 (+0200), Peter Zijlstra a écrit : >>> On Tue, Oct 18, 2016 at 11:45:48AM +0200, Vincent Guittot wrote: On 18 October 2016 at 11:07, Peter Zijlstra wrote: > >

Re: [v4.8-rc1 Regression] sched/fair: Apply more PELT fixes

On 19/10/16 12:25, Vincent Guittot wrote: > On 19 October 2016 at 11:46, Dietmar Eggemann > wrote: >> On 18/10/16 12:56, Vincent Guittot wrote: >>> Le Tuesday 18 Oct 2016 à 12:34:12 (+0200), Peter Zijlstra a écrit : On Tue, Oct 18, 2016 at 11:45:48AM +0200, Vincent

Re: [v4.8-rc1 Regression] sched/fair: Apply more PELT fixes

On 19/10/16 12:25, Vincent Guittot wrote: > On 19 October 2016 at 11:46, Dietmar Eggemann > wrote: >> On 18/10/16 12:56, Vincent Guittot wrote: >>> Le Tuesday 18 Oct 2016 à 12:34:12 (+0200), Peter Zijlstra a écrit : On Tue, Oct 18, 2016 at 11:45:48AM +0200, Vincent Guittot wrote: > On

Re: [v4.8-rc1 Regression] sched/fair: Apply more PELT fixes

On 19 October 2016 at 16:49, Joseph Salisbury wrote: > On 10/18/2016 07:56 AM, Vincent Guittot wrote: >> Le Tuesday 18 Oct 2016 à 12:34:12 (+0200), Peter Zijlstra a écrit : >>> On Tue, Oct 18, 2016 at 11:45:48AM +0200, Vincent Guittot wrote: On 18 October 2016

Re: [v4.8-rc1 Regression] sched/fair: Apply more PELT fixes

On 19 October 2016 at 16:49, Joseph Salisbury wrote: > On 10/18/2016 07:56 AM, Vincent Guittot wrote: >> Le Tuesday 18 Oct 2016 à 12:34:12 (+0200), Peter Zijlstra a écrit : >>> On Tue, Oct 18, 2016 at 11:45:48AM +0200, Vincent Guittot wrote: On 18 October 2016 at 11:07, Peter Zijlstra

Re: [v4.8-rc1 Regression] sched/fair: Apply more PELT fixes

On 10/18/2016 07:56 AM, Vincent Guittot wrote: > Le Tuesday 18 Oct 2016 à 12:34:12 (+0200), Peter Zijlstra a écrit : >> On Tue, Oct 18, 2016 at 11:45:48AM +0200, Vincent Guittot wrote: >>> On 18 October 2016 at 11:07, Peter Zijlstra wrote: So aside from funny BIOSes,

Re: [v4.8-rc1 Regression] sched/fair: Apply more PELT fixes

On 10/18/2016 07:56 AM, Vincent Guittot wrote: > Le Tuesday 18 Oct 2016 à 12:34:12 (+0200), Peter Zijlstra a écrit : >> On Tue, Oct 18, 2016 at 11:45:48AM +0200, Vincent Guittot wrote: >>> On 18 October 2016 at 11:07, Peter Zijlstra wrote: So aside from funny BIOSes, this should also show up

Re: [v4.8-rc1 Regression] sched/fair: Apply more PELT fixes

On 19 October 2016 at 13:33, Peter Zijlstra wrote: > On Tue, Oct 18, 2016 at 01:56:51PM +0200, Vincent Guittot wrote: > >> --- >> kernel/sched/fair.c | 9 - >> 1 file changed, 8 insertions(+), 1 deletion(-) >> >> diff --git a/kernel/sched/fair.c

Re: [v4.8-rc1 Regression] sched/fair: Apply more PELT fixes

On 19 October 2016 at 13:33, Peter Zijlstra wrote: > On Tue, Oct 18, 2016 at 01:56:51PM +0200, Vincent Guittot wrote: > >> --- >> kernel/sched/fair.c | 9 - >> 1 file changed, 8 insertions(+), 1 deletion(-) >> >> diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c >> index

Re: [v4.8-rc1 Regression] sched/fair: Apply more PELT fixes

On 18 October 2016 at 23:58, Joonwoo Park wrote: > > > On 10/18/2016 04:56 AM, Vincent Guittot wrote: >> >> Le Tuesday 18 Oct 2016 à 12:34:12 (+0200), Peter Zijlstra a écrit : >>> >>> On Tue, Oct 18, 2016 at 11:45:48AM +0200, Vincent Guittot wrote: On 18 October

Re: [v4.8-rc1 Regression] sched/fair: Apply more PELT fixes

On 18 October 2016 at 23:58, Joonwoo Park wrote: > > > On 10/18/2016 04:56 AM, Vincent Guittot wrote: >> >> Le Tuesday 18 Oct 2016 à 12:34:12 (+0200), Peter Zijlstra a écrit : >>> >>> On Tue, Oct 18, 2016 at 11:45:48AM +0200, Vincent Guittot wrote: On 18 October 2016 at 11:07, Peter

Re: [v4.8-rc1 Regression] sched/fair: Apply more PELT fixes

On 10/18/2016 04:56 AM, Vincent Guittot wrote: Le Tuesday 18 Oct 2016 à 12:34:12 (+0200), Peter Zijlstra a écrit : On Tue, Oct 18, 2016 at 11:45:48AM +0200, Vincent Guittot wrote: On 18 October 2016 at 11:07, Peter Zijlstra wrote: So aside from funny BIOSes, this

Re: [v4.8-rc1 Regression] sched/fair: Apply more PELT fixes

On 10/18/2016 04:56 AM, Vincent Guittot wrote: Le Tuesday 18 Oct 2016 à 12:34:12 (+0200), Peter Zijlstra a écrit : On Tue, Oct 18, 2016 at 11:45:48AM +0200, Vincent Guittot wrote: On 18 October 2016 at 11:07, Peter Zijlstra wrote: So aside from funny BIOSes, this should also show up when

Re: [v4.8-rc1 Regression] sched/fair: Apply more PELT fixes

On Tue, Oct 18, 2016 at 12:15:11PM +0100, Dietmar Eggemann wrote: > On 18/10/16 10:07, Peter Zijlstra wrote: > > On Mon, Oct 17, 2016 at 11:52:39PM +0100, Dietmar Eggemann wrote: > > On IRC you mentioned that adding list_add_leaf_cfs_rq() to > > online_fair_sched_group() cures this, this would

Re: [v4.8-rc1 Regression] sched/fair: Apply more PELT fixes

On Tue, Oct 18, 2016 at 12:15:11PM +0100, Dietmar Eggemann wrote: > On 18/10/16 10:07, Peter Zijlstra wrote: > > On Mon, Oct 17, 2016 at 11:52:39PM +0100, Dietmar Eggemann wrote: > > On IRC you mentioned that adding list_add_leaf_cfs_rq() to > > online_fair_sched_group() cures this, this would

Re: [v4.8-rc1 Regression] sched/fair: Apply more PELT fixes

Le Tuesday 18 Oct 2016 à 12:34:12 (+0200), Peter Zijlstra a écrit : > On Tue, Oct 18, 2016 at 11:45:48AM +0200, Vincent Guittot wrote: > > On 18 October 2016 at 11:07, Peter Zijlstra wrote: > > > So aside from funny BIOSes, this should also show up when creating > > >

Re: [v4.8-rc1 Regression] sched/fair: Apply more PELT fixes

Le Tuesday 18 Oct 2016 à 12:34:12 (+0200), Peter Zijlstra a écrit : > On Tue, Oct 18, 2016 at 11:45:48AM +0200, Vincent Guittot wrote: > > On 18 October 2016 at 11:07, Peter Zijlstra wrote: > > > So aside from funny BIOSes, this should also show up when creating > > > cgroups when you have

Re: [v4.8-rc1 Regression] sched/fair: Apply more PELT fixes

On 18/10/16 10:07, Peter Zijlstra wrote: > On Mon, Oct 17, 2016 at 11:52:39PM +0100, Dietmar Eggemann wrote: [...] >> Using for_each_online_cpu(i) instead of for_each_possible_cpu(i) in >> online_fair_sched_group() works on this machine, i.e. the .tg_load_avg >> of system.slice tg is 0 after

Re: [v4.8-rc1 Regression] sched/fair: Apply more PELT fixes

On 18/10/16 10:07, Peter Zijlstra wrote: > On Mon, Oct 17, 2016 at 11:52:39PM +0100, Dietmar Eggemann wrote: [...] >> Using for_each_online_cpu(i) instead of for_each_possible_cpu(i) in >> online_fair_sched_group() works on this machine, i.e. the .tg_load_avg >> of system.slice tg is 0 after

Re: [v4.8-rc1 Regression] sched/fair: Apply more PELT fixes

On Tue, Oct 18, 2016 at 11:45:48AM +0200, Vincent Guittot wrote: > On 18 October 2016 at 11:07, Peter Zijlstra wrote: > > So aside from funny BIOSes, this should also show up when creating > > cgroups when you have offlined a few CPUs, which is far more common I'd > > think.

Re: [v4.8-rc1 Regression] sched/fair: Apply more PELT fixes

On Tue, Oct 18, 2016 at 11:45:48AM +0200, Vincent Guittot wrote: > On 18 October 2016 at 11:07, Peter Zijlstra wrote: > > So aside from funny BIOSes, this should also show up when creating > > cgroups when you have offlined a few CPUs, which is far more common I'd > > think. > > The problem is

Re: [v4.8-rc1 Regression] sched/fair: Apply more PELT fixes

On 18 October 2016 at 11:07, Peter Zijlstra wrote: > On Mon, Oct 17, 2016 at 11:52:39PM +0100, Dietmar Eggemann wrote: >> >> Something looks weird related to the use of for_each_possible_cpu(i) in >> online_fair_sched_group() on my i5-3320M CPU (4 logical cpus). >> >> In

Re: [v4.8-rc1 Regression] sched/fair: Apply more PELT fixes

On 18 October 2016 at 11:07, Peter Zijlstra wrote: > On Mon, Oct 17, 2016 at 11:52:39PM +0100, Dietmar Eggemann wrote: >> >> Something looks weird related to the use of for_each_possible_cpu(i) in >> online_fair_sched_group() on my i5-3320M CPU (4 logical cpus). >> >> In case I print out cpu id

Re: [v4.8-rc1 Regression] sched/fair: Apply more PELT fixes

On Mon, Oct 17, 2016 at 11:52:39PM +0100, Dietmar Eggemann wrote: > > Something looks weird related to the use of for_each_possible_cpu(i) in > online_fair_sched_group() on my i5-3320M CPU (4 logical cpus). > > In case I print out cpu id and the cpu masks inside the > for_each_possible_cpu(i) >

Re: [v4.8-rc1 Regression] sched/fair: Apply more PELT fixes

On Mon, Oct 17, 2016 at 11:52:39PM +0100, Dietmar Eggemann wrote: > > Something looks weird related to the use of for_each_possible_cpu(i) in > online_fair_sched_group() on my i5-3320M CPU (4 logical cpus). > > In case I print out cpu id and the cpu masks inside the > for_each_possible_cpu(i) >

Re: [v4.8-rc1 Regression] sched/fair: Apply more PELT fixes

On 18 October 2016 at 00:52, Dietmar Eggemann wrote: > On 10/17/2016 02:54 PM, Vincent Guittot wrote: >> On 17 October 2016 at 15:19, Peter Zijlstra wrote: >>> On Mon, Oct 17, 2016 at 12:49:55PM +0100, Dietmar Eggemann wrote: > > [...] > BTW,

Re: [v4.8-rc1 Regression] sched/fair: Apply more PELT fixes

On 18 October 2016 at 00:52, Dietmar Eggemann wrote: > On 10/17/2016 02:54 PM, Vincent Guittot wrote: >> On 17 October 2016 at 15:19, Peter Zijlstra wrote: >>> On Mon, Oct 17, 2016 at 12:49:55PM +0100, Dietmar Eggemann wrote: > > [...] > BTW, I guess we can reach .tg_load_avg up to

Re: [v4.8-rc1 Regression] sched/fair: Apply more PELT fixes

On 10/17/2016 02:54 PM, Vincent Guittot wrote: > On 17 October 2016 at 15:19, Peter Zijlstra wrote: >> On Mon, Oct 17, 2016 at 12:49:55PM +0100, Dietmar Eggemann wrote: [...] >>> BTW, I guess we can reach .tg_load_avg up to ~30-40 on such a system >>> initially

Re: [v4.8-rc1 Regression] sched/fair: Apply more PELT fixes

On 10/17/2016 02:54 PM, Vincent Guittot wrote: > On 17 October 2016 at 15:19, Peter Zijlstra wrote: >> On Mon, Oct 17, 2016 at 12:49:55PM +0100, Dietmar Eggemann wrote: [...] >>> BTW, I guess we can reach .tg_load_avg up to ~30-40 on such a system >>> initially because systemd will

Re: [v4.8-rc1 Regression] sched/fair: Apply more PELT fixes

On 17 October 2016 at 15:19, Peter Zijlstra wrote: > On Mon, Oct 17, 2016 at 12:49:55PM +0100, Dietmar Eggemann wrote: > >> > diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c >> > index 8b03fb5..8926685 100644 >> > --- a/kernel/sched/fair.c >> > +++

Re: [v4.8-rc1 Regression] sched/fair: Apply more PELT fixes

On 17 October 2016 at 15:19, Peter Zijlstra wrote: > On Mon, Oct 17, 2016 at 12:49:55PM +0100, Dietmar Eggemann wrote: > >> > diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c >> > index 8b03fb5..8926685 100644 >> > --- a/kernel/sched/fair.c >> > +++ b/kernel/sched/fair.c >> > @@ -2902,7

Re: [v4.8-rc1 Regression] sched/fair: Apply more PELT fixes

On Mon, Oct 17, 2016 at 12:49:55PM +0100, Dietmar Eggemann wrote: > > diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c > > index 8b03fb5..8926685 100644 > > --- a/kernel/sched/fair.c > > +++ b/kernel/sched/fair.c > > @@ -2902,7 +2902,8 @@ __update_load_avg(u64 now, int cpu, struct sched_avg

Re: [v4.8-rc1 Regression] sched/fair: Apply more PELT fixes

On Mon, Oct 17, 2016 at 12:49:55PM +0100, Dietmar Eggemann wrote: > > diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c > > index 8b03fb5..8926685 100644 > > --- a/kernel/sched/fair.c > > +++ b/kernel/sched/fair.c > > @@ -2902,7 +2902,8 @@ __update_load_avg(u64 now, int cpu, struct sched_avg

Re: [v4.8-rc1 Regression] sched/fair: Apply more PELT fixes

Hi Vincent, On 17/10/16 10:09, Vincent Guittot wrote: > Le Friday 14 Oct 2016 à 12:04:02 (-0400), Joseph Salisbury a écrit : >> On 10/14/2016 11:18 AM, Vincent Guittot wrote: >>> Le Friday 14 Oct 2016 à 14:10:07 (+0100), Dietmar Eggemann a écrit : On 14/10/16 09:24, Vincent Guittot wrote:

Re: [v4.8-rc1 Regression] sched/fair: Apply more PELT fixes

Hi Vincent, On 17/10/16 10:09, Vincent Guittot wrote: > Le Friday 14 Oct 2016 à 12:04:02 (-0400), Joseph Salisbury a écrit : >> On 10/14/2016 11:18 AM, Vincent Guittot wrote: >>> Le Friday 14 Oct 2016 à 14:10:07 (+0100), Dietmar Eggemann a écrit : On 14/10/16 09:24, Vincent Guittot wrote:

Re: [v4.8-rc1 Regression] sched/fair: Apply more PELT fixes

Le Friday 14 Oct 2016 à 12:04:02 (-0400), Joseph Salisbury a écrit : > On 10/14/2016 11:18 AM, Vincent Guittot wrote: > > Le Friday 14 Oct 2016 à 14:10:07 (+0100), Dietmar Eggemann a écrit : > >> On 14/10/16 09:24, Vincent Guittot wrote: > >>> On 13 October 2016 at 23:34, Vincent Guittot

Re: [v4.8-rc1 Regression] sched/fair: Apply more PELT fixes

Le Friday 14 Oct 2016 à 12:04:02 (-0400), Joseph Salisbury a écrit : > On 10/14/2016 11:18 AM, Vincent Guittot wrote: > > Le Friday 14 Oct 2016 à 14:10:07 (+0100), Dietmar Eggemann a écrit : > >> On 14/10/16 09:24, Vincent Guittot wrote: > >>> On 13 October 2016 at 23:34, Vincent Guittot > >>>

Re: [v4.8-rc1 Regression] sched/fair: Apply more PELT fixes

On 10/14/2016 11:18 AM, Vincent Guittot wrote: > Le Friday 14 Oct 2016 à 14:10:07 (+0100), Dietmar Eggemann a écrit : >> On 14/10/16 09:24, Vincent Guittot wrote: >>> On 13 October 2016 at 23:34, Vincent Guittot >>> wrote: On 13 October 2016 at 20:49, Dietmar

Re: [v4.8-rc1 Regression] sched/fair: Apply more PELT fixes

On 10/14/2016 11:18 AM, Vincent Guittot wrote: > Le Friday 14 Oct 2016 à 14:10:07 (+0100), Dietmar Eggemann a écrit : >> On 14/10/16 09:24, Vincent Guittot wrote: >>> On 13 October 2016 at 23:34, Vincent Guittot >>> wrote: On 13 October 2016 at 20:49, Dietmar Eggemann wrote: > On

Re: [v4.8-rc1 Regression] sched/fair: Apply more PELT fixes

Le Friday 14 Oct 2016 à 14:10:07 (+0100), Dietmar Eggemann a écrit : > On 14/10/16 09:24, Vincent Guittot wrote: > > On 13 October 2016 at 23:34, Vincent Guittot > > wrote: > >> On 13 October 2016 at 20:49, Dietmar Eggemann > >> wrote: >

Re: [v4.8-rc1 Regression] sched/fair: Apply more PELT fixes

Le Friday 14 Oct 2016 à 14:10:07 (+0100), Dietmar Eggemann a écrit : > On 14/10/16 09:24, Vincent Guittot wrote: > > On 13 October 2016 at 23:34, Vincent Guittot > > wrote: > >> On 13 October 2016 at 20:49, Dietmar Eggemann > >> wrote: > >>> On 13/10/16 17:48, Vincent Guittot wrote: > On

Re: [v4.8-rc1 Regression] sched/fair: Apply more PELT fixes

On 14/10/16 09:24, Vincent Guittot wrote: > On 13 October 2016 at 23:34, Vincent Guittot > wrote: >> On 13 October 2016 at 20:49, Dietmar Eggemann >> wrote: >>> On 13/10/16 17:48, Vincent Guittot wrote: On 13 October 2016 at 17:52,

Re: [v4.8-rc1 Regression] sched/fair: Apply more PELT fixes

On 14/10/16 09:24, Vincent Guittot wrote: > On 13 October 2016 at 23:34, Vincent Guittot > wrote: >> On 13 October 2016 at 20:49, Dietmar Eggemann >> wrote: >>> On 13/10/16 17:48, Vincent Guittot wrote: On 13 October 2016 at 17:52, Joseph Salisbury wrote: > On 10/13/2016 06:58

Re: [v4.8-rc1 Regression] sched/fair: Apply more PELT fixes

On 13 October 2016 at 23:34, Vincent Guittot wrote: > On 13 October 2016 at 20:49, Dietmar Eggemann > wrote: >> On 13/10/16 17:48, Vincent Guittot wrote: >>> On 13 October 2016 at 17:52, Joseph Salisbury >>>

Re: [v4.8-rc1 Regression] sched/fair: Apply more PELT fixes

On 13 October 2016 at 23:34, Vincent Guittot wrote: > On 13 October 2016 at 20:49, Dietmar Eggemann > wrote: >> On 13/10/16 17:48, Vincent Guittot wrote: >>> On 13 October 2016 at 17:52, Joseph Salisbury >>> wrote: On 10/13/2016 06:58 AM, Vincent Guittot wrote: > Hi, > > On 12

Re: [v4.8-rc1 Regression] sched/fair: Apply more PELT fixes

On 13 October 2016 at 20:49, Dietmar Eggemann wrote: > On 13/10/16 17:48, Vincent Guittot wrote: >> On 13 October 2016 at 17:52, Joseph Salisbury >> wrote: >>> On 10/13/2016 06:58 AM, Vincent Guittot wrote: Hi, On 12

Re: [v4.8-rc1 Regression] sched/fair: Apply more PELT fixes

On 13 October 2016 at 20:49, Dietmar Eggemann wrote: > On 13/10/16 17:48, Vincent Guittot wrote: >> On 13 October 2016 at 17:52, Joseph Salisbury >> wrote: >>> On 10/13/2016 06:58 AM, Vincent Guittot wrote: Hi, On 12 October 2016 at 18:21, Joseph Salisbury wrote: > On

Re: [v4.8-rc1 Regression] sched/fair: Apply more PELT fixes

On 13/10/16 17:48, Vincent Guittot wrote: > On 13 October 2016 at 17:52, Joseph Salisbury > wrote: >> On 10/13/2016 06:58 AM, Vincent Guittot wrote: >>> Hi, >>> >>> On 12 October 2016 at 18:21, Joseph Salisbury >>> wrote: On

Re: [v4.8-rc1 Regression] sched/fair: Apply more PELT fixes

On 13/10/16 17:48, Vincent Guittot wrote: > On 13 October 2016 at 17:52, Joseph Salisbury > wrote: >> On 10/13/2016 06:58 AM, Vincent Guittot wrote: >>> Hi, >>> >>> On 12 October 2016 at 18:21, Joseph Salisbury >>> wrote: On 10/12/2016 08:20 AM, Vincent Guittot wrote: > On 8 October

Re: [v4.8-rc1 Regression] sched/fair: Apply more PELT fixes

On 13 October 2016 at 17:52, Joseph Salisbury wrote: > On 10/13/2016 06:58 AM, Vincent Guittot wrote: >> Hi, >> >> On 12 October 2016 at 18:21, Joseph Salisbury >> wrote: >>> On 10/12/2016 08:20 AM, Vincent Guittot wrote: On 8

Re: [v4.8-rc1 Regression] sched/fair: Apply more PELT fixes

On 13 October 2016 at 17:52, Joseph Salisbury wrote: > On 10/13/2016 06:58 AM, Vincent Guittot wrote: >> Hi, >> >> On 12 October 2016 at 18:21, Joseph Salisbury >> wrote: >>> On 10/12/2016 08:20 AM, Vincent Guittot wrote: On 8 October 2016 at 13:49, Mike Galbraith wrote: > On Sat,

Re: [v4.8-rc1 Regression] sched/fair: Apply more PELT fixes

On 10/13/2016 06:58 AM, Vincent Guittot wrote: > Hi, > > On 12 October 2016 at 18:21, Joseph Salisbury > wrote: >> On 10/12/2016 08:20 AM, Vincent Guittot wrote: >>> On 8 October 2016 at 13:49, Mike Galbraith wrote: On Sat, 2016-10-08 at 13:37

Re: [v4.8-rc1 Regression] sched/fair: Apply more PELT fixes

On 10/13/2016 06:58 AM, Vincent Guittot wrote: > Hi, > > On 12 October 2016 at 18:21, Joseph Salisbury > wrote: >> On 10/12/2016 08:20 AM, Vincent Guittot wrote: >>> On 8 October 2016 at 13:49, Mike Galbraith wrote: On Sat, 2016-10-08 at 13:37 +0200, Vincent Guittot wrote: > On 8

Re: [v4.8-rc1 Regression] sched/fair: Apply more PELT fixes

Hi, On 12 October 2016 at 18:21, Joseph Salisbury wrote: > On 10/12/2016 08:20 AM, Vincent Guittot wrote: >> On 8 October 2016 at 13:49, Mike Galbraith wrote: >>> On Sat, 2016-10-08 at 13:37 +0200, Vincent Guittot wrote: On 8 October 2016 at

Re: [v4.8-rc1 Regression] sched/fair: Apply more PELT fixes

Hi, On 12 October 2016 at 18:21, Joseph Salisbury wrote: > On 10/12/2016 08:20 AM, Vincent Guittot wrote: >> On 8 October 2016 at 13:49, Mike Galbraith wrote: >>> On Sat, 2016-10-08 at 13:37 +0200, Vincent Guittot wrote: On 8 October 2016 at 10:39, Ingo Molnar wrote: > * Peter

Re: [v4.8-rc1 Regression] sched/fair: Apply more PELT fixes

On 10/12/2016 08:20 AM, Vincent Guittot wrote: > On 8 October 2016 at 13:49, Mike Galbraith wrote: >> On Sat, 2016-10-08 at 13:37 +0200, Vincent Guittot wrote: >>> On 8 October 2016 at 10:39, Ingo Molnar wrote: * Peter Zijlstra wrote:

Re: [v4.8-rc1 Regression] sched/fair: Apply more PELT fixes

On 10/12/2016 08:20 AM, Vincent Guittot wrote: > On 8 October 2016 at 13:49, Mike Galbraith wrote: >> On Sat, 2016-10-08 at 13:37 +0200, Vincent Guittot wrote: >>> On 8 October 2016 at 10:39, Ingo Molnar wrote: * Peter Zijlstra wrote: > On Fri, Oct 07, 2016 at 03:38:23PM -0400,

Re: [v4.8-rc1 Regression] sched/fair: Apply more PELT fixes

On 10/12/2016 08:20 AM, Vincent Guittot wrote: > On 8 October 2016 at 13:49, Mike Galbraith wrote: >> On Sat, 2016-10-08 at 13:37 +0200, Vincent Guittot wrote: >>> On 8 October 2016 at 10:39, Ingo Molnar wrote: * Peter Zijlstra wrote:

Re: [v4.8-rc1 Regression] sched/fair: Apply more PELT fixes

On 10/12/2016 08:20 AM, Vincent Guittot wrote: > On 8 October 2016 at 13:49, Mike Galbraith wrote: >> On Sat, 2016-10-08 at 13:37 +0200, Vincent Guittot wrote: >>> On 8 October 2016 at 10:39, Ingo Molnar wrote: * Peter Zijlstra wrote: > On Fri, Oct 07, 2016 at 03:38:23PM -0400,

Re: [v4.8-rc1 Regression] sched/fair: Apply more PELT fixes

On 8 October 2016 at 13:49, Mike Galbraith wrote: > On Sat, 2016-10-08 at 13:37 +0200, Vincent Guittot wrote: >> On 8 October 2016 at 10:39, Ingo Molnar wrote: >> > >> > * Peter Zijlstra wrote: >> > >> > > On Fri, Oct 07, 2016 at 03:38:23PM

Re: [v4.8-rc1 Regression] sched/fair: Apply more PELT fixes

On 8 October 2016 at 13:49, Mike Galbraith wrote: > On Sat, 2016-10-08 at 13:37 +0200, Vincent Guittot wrote: >> On 8 October 2016 at 10:39, Ingo Molnar wrote: >> > >> > * Peter Zijlstra wrote: >> > >> > > On Fri, Oct 07, 2016 at 03:38:23PM -0400, Joseph Salisbury wrote: >> > > > Hello Peter,

Re: [v4.8-rc1 Regression] sched/fair: Apply more PELT fixes

On Sat, 2016-10-08 at 13:37 +0200, Vincent Guittot wrote: > On 8 October 2016 at 10:39, Ingo Molnar wrote: > > > > * Peter Zijlstra wrote: > > > > > On Fri, Oct 07, 2016 at 03:38:23PM -0400, Joseph Salisbury wrote: > > > > Hello Peter, > > > > > > > > A

Re: [v4.8-rc1 Regression] sched/fair: Apply more PELT fixes

On Sat, 2016-10-08 at 13:37 +0200, Vincent Guittot wrote: > On 8 October 2016 at 10:39, Ingo Molnar wrote: > > > > * Peter Zijlstra wrote: > > > > > On Fri, Oct 07, 2016 at 03:38:23PM -0400, Joseph Salisbury wrote: > > > > Hello Peter, > > > > > > > > A kernel bug report was opened against

Re: [v4.8-rc1 Regression] sched/fair: Apply more PELT fixes

On 8 October 2016 at 10:39, Ingo Molnar wrote: > > * Peter Zijlstra wrote: > >> On Fri, Oct 07, 2016 at 03:38:23PM -0400, Joseph Salisbury wrote: >> > Hello Peter, >> > >> > A kernel bug report was opened against Ubuntu [0]. After a kernel >> > bisect, it

Re: [v4.8-rc1 Regression] sched/fair: Apply more PELT fixes

On 8 October 2016 at 10:39, Ingo Molnar wrote: > > * Peter Zijlstra wrote: > >> On Fri, Oct 07, 2016 at 03:38:23PM -0400, Joseph Salisbury wrote: >> > Hello Peter, >> > >> > A kernel bug report was opened against Ubuntu [0]. After a kernel >> > bisect, it was found that reverting the following

Re: [v4.8-rc1 Regression] sched/fair: Apply more PELT fixes

* Peter Zijlstra wrote: > On Fri, Oct 07, 2016 at 03:38:23PM -0400, Joseph Salisbury wrote: > > Hello Peter, > > > > A kernel bug report was opened against Ubuntu [0]. After a kernel > > bisect, it was found that reverting the following commit resolved this bug: > > > >

Re: [v4.8-rc1 Regression] sched/fair: Apply more PELT fixes

* Peter Zijlstra wrote: > On Fri, Oct 07, 2016 at 03:38:23PM -0400, Joseph Salisbury wrote: > > Hello Peter, > > > > A kernel bug report was opened against Ubuntu [0]. After a kernel > > bisect, it was found that reverting the following commit resolved this bug: > > > > commit

Re: [v4.8-rc1 Regression] sched/fair: Apply more PELT fixes

On Fri, Oct 07, 2016 at 03:38:23PM -0400, Joseph Salisbury wrote: > Hello Peter, > > A kernel bug report was opened against Ubuntu [0]. After a kernel > bisect, it was found that reverting the following commit resolved this bug: > > commit 3d30544f02120b884bba2a9466c87dba980e3be5 > Author:

Re: [v4.8-rc1 Regression] sched/fair: Apply more PELT fixes

On Fri, Oct 07, 2016 at 03:38:23PM -0400, Joseph Salisbury wrote: > Hello Peter, > > A kernel bug report was opened against Ubuntu [0]. After a kernel > bisect, it was found that reverting the following commit resolved this bug: > > commit 3d30544f02120b884bba2a9466c87dba980e3be5 > Author:

Re: [v4.8-rc1 Regression] sched/fair: Apply more PELT fixes

On Fri, Oct 7, 2016 at 1:22 PM, Joseph Salisbury wrote: > > Yes, CONFIG_SCHED_AUTOGROUP is enabled in the Ubuntu kernel. However, > that config was also enable in the Ubuntu 4.4 kerrnels without seeing > this issue. I can try disabling the config in the 4.8

Re: [v4.8-rc1 Regression] sched/fair: Apply more PELT fixes

On Fri, Oct 7, 2016 at 1:22 PM, Joseph Salisbury wrote: > > Yes, CONFIG_SCHED_AUTOGROUP is enabled in the Ubuntu kernel. However, > that config was also enable in the Ubuntu 4.4 kerrnels without seeing > this issue. I can try disabling the config in the 4.8 based kernel and > see if that

Re: [v4.8-rc1 Regression] sched/fair: Apply more PELT fixes

On 10/07/2016 03:57 PM, Linus Torvalds wrote: > On Fri, Oct 7, 2016 at 12:38 PM, Joseph Salisbury > wrote: >> A kernel bug report was opened against Ubuntu [0]. After a kernel >> bisect, it was found that reverting the following commit resolved this bug: > Hmm.

Re: [v4.8-rc1 Regression] sched/fair: Apply more PELT fixes

On 10/07/2016 03:57 PM, Linus Torvalds wrote: > On Fri, Oct 7, 2016 at 12:38 PM, Joseph Salisbury > wrote: >> A kernel bug report was opened against Ubuntu [0]. After a kernel >> bisect, it was found that reverting the following commit resolved this bug: > Hmm. Interesting, and it sounds like we

Re: [v4.8-rc1 Regression] sched/fair: Apply more PELT fixes

On Fri, Oct 7, 2016 at 12:38 PM, Joseph Salisbury wrote: > > A kernel bug report was opened against Ubuntu [0]. After a kernel > bisect, it was found that reverting the following commit resolved this bug: Hmm. Interesting, and it sounds like we should revert that

Re: [v4.8-rc1 Regression] sched/fair: Apply more PELT fixes

On Fri, Oct 7, 2016 at 12:38 PM, Joseph Salisbury wrote: > > A kernel bug report was opened against Ubuntu [0]. After a kernel > bisect, it was found that reverting the following commit resolved this bug: Hmm. Interesting, and it sounds like we should revert that unless somebody figures out

[v4.8-rc1 Regression] sched/fair: Apply more PELT fixes

Hello Peter, A kernel bug report was opened against Ubuntu [0]. After a kernel bisect, it was found that reverting the following commit resolved this bug: commit 3d30544f02120b884bba2a9466c87dba980e3be5 Author: Peter Zijlstra Date: Tue Jun 21 14:27:50 2016 +0200

[v4.8-rc1 Regression] sched/fair: Apply more PELT fixes

Hello Peter, A kernel bug report was opened against Ubuntu [0]. After a kernel bisect, it was found that reverting the following commit resolved this bug: commit 3d30544f02120b884bba2a9466c87dba980e3be5 Author: Peter Zijlstra Date: Tue Jun 21 14:27:50 2016 +0200 sched/fair: Apply more