Hi Peter,
On Mon, Jan 05, 2015 at 03:52:10PM +0100, Peter Zijlstra wrote:
>On Wed, Nov 12, 2014 at 04:39:06PM +0100, Peter Zijlstra wrote:
>> On Wed, Nov 12, 2014 at 03:08:44PM +, Juri Lelli wrote:
>> > > @@ -1185,8 +1223,9 @@ static int find_later_rq(struct task_struct *task)
>> > >
On Wed, Nov 12, 2014 at 04:39:06PM +0100, Peter Zijlstra wrote:
> On Wed, Nov 12, 2014 at 03:08:44PM +, Juri Lelli wrote:
> > > @@ -1185,8 +1223,9 @@ static int find_later_rq(struct task_struct *task)
> > >* We have to consider system topology and task affinity
> > >* first, then we can
Hi Peterz, Juri,
On Thu, Nov 13, 2014 at 01:21:31PM +0300, Kirill Tkhai wrote:
>> > Also, we should think about the following situation.
>> >
>> > DL task is left on dead rq. In your scheme it will be moved by the timer.
>> > But what will be if somebody changes the class of the task (before timer)
Hi Juri,
On Wed, Nov 19, 2014 at 01:49:20PM +, Juri Lelli wrote:
[...]
>> @@ -1185,8 +1223,9 @@ static int find_later_rq(struct task_struct *task)
>> * We have to consider system topology and task affinity
>> * first, then we can look for a suitable cpu.
>>
Hi,
On 19/11/14 12:30, Wanpeng Li wrote:
> Hi Juri,
> On 11/19/14, 6:13 PM, Juri Lelli wrote:
>> Hi,
>>
>> On 18/11/14 23:18, Wanpeng Li wrote:
>>> Hi Juri,
>>> On 11/12/14, 11:08 PM, Juri Lelli wrote:
Hi,
On 12/11/14 01:06, Wanpeng Li wrote:
> I observe that dl task can't be mi
Hi Juri,
On 11/19/14, 6:13 PM, Juri Lelli wrote:
Hi,
On 18/11/14 23:18, Wanpeng Li wrote:
Hi Juri,
On 11/12/14, 11:08 PM, Juri Lelli wrote:
Hi,
On 12/11/14 01:06, Wanpeng Li wrote:
I observe that dl task can't be migrated to other cpus during cpu hotplug,
in addition, task may/may not be run
Hi,
On 18/11/14 23:18, Wanpeng Li wrote:
> Hi Juri,
> On 11/12/14, 11:08 PM, Juri Lelli wrote:
>> Hi,
>>
>> On 12/11/14 01:06, Wanpeng Li wrote:
>>> I observe that dl task can't be migrated to other cpus during cpu hotplug,
>>> in addition, task may/may not be running again if cpu is added back. T
Hi Juri,
On 11/12/14, 11:08 PM, Juri Lelli wrote:
Hi,
On 12/11/14 01:06, Wanpeng Li wrote:
I observe that dl task can't be migrated to other cpus during cpu hotplug,
in addition, task may/may not be running again if cpu is added back. The
root cause which I found is that dl task will be throtte
> Hi Kirill,
> On Thu, Nov 13, 2014 at 01:21:31PM +0300, Kirill Tkhai wrote:
>
>>> @@ -1185,8 +1223,9 @@ static int find_later_rq(struct task_struct *task)
>>> * We have to consider system topology and task affinity
>>> * first, then we can look for a suitable cpu.
>>> */
>>>
Hi Kirill,
On Thu, Nov 13, 2014 at 01:21:31PM +0300, Kirill Tkhai wrote:
>> @@ -1185,8 +1223,9 @@ static int find_later_rq(struct task_struct *task)
>> * We have to consider system topology and task affinity
>> * first, then we can look for a suitable cpu.
>>
В Чт, 13/11/2014 в 18:19 +0800, Wanpeng Li пишет:
> Hi Kirill,
> On 11/13/14, 6:10 PM, Kirill Tkhai wrote:
> > В Чт, 13/11/2014 в 06:56 +0800, Wanpeng Li пишет:
> >> Hi Kirill,
> >> On Wed, Nov 12, 2014 at 07:27:06PM +0300, Kirill Tkhai wrote:
> >>> В Ср, 12/11/2014 в 09:06 +0800, Wanpeng Li пишет:
Hi Kirill,
On 11/13/14, 6:10 PM, Kirill Tkhai wrote:
В Чт, 13/11/2014 в 06:56 +0800, Wanpeng Li пишет:
Hi Kirill,
On Wed, Nov 12, 2014 at 07:27:06PM +0300, Kirill Tkhai wrote:
В Ср, 12/11/2014 в 09:06 +0800, Wanpeng Li пишет:
I observe that dl task can't be migrated to other cpus during cpu ho
В Чт, 13/11/2014 в 06:56 +0800, Wanpeng Li пишет:
> Hi Kirill,
> On Wed, Nov 12, 2014 at 07:27:06PM +0300, Kirill Tkhai wrote:
> >В Ср, 12/11/2014 в 09:06 +0800, Wanpeng Li пишет:
> >> I observe that dl task can't be migrated to other cpus during cpu hotplug,
> >> in addition, task may/may not be
Hi Juri,
On Wed, Nov 12, 2014 at 03:08:44PM +, Juri Lelli wrote:
Btw, could you review other three deadline patches of mine?
https://lkml.org/lkml/2014/11/6/51
https://lkml.org/lkml/2014/11/10/817
https://lkml.org/lkml/2014/11/10/818
Great thanks for your time. ;-)
Regards,
Wanpeng Li
>Hi
Hi Peter,
On Wed, Nov 12, 2014 at 04:39:06PM +0100, Peter Zijlstra wrote:
>On Wed, Nov 12, 2014 at 03:08:44PM +, Juri Lelli wrote:
>> > @@ -1185,8 +1223,9 @@ static int find_later_rq(struct task_struct *task)
>> > * We have to consider system topology and task affinity
>> > * first, the
Hi Kirill,
On Wed, Nov 12, 2014 at 07:27:06PM +0300, Kirill Tkhai wrote:
>В Ср, 12/11/2014 в 09:06 +0800, Wanpeng Li пишет:
>> I observe that dl task can't be migrated to other cpus during cpu hotplug,
>> in addition, task may/may not be running again if cpu is added back. The
>> root cause which
В Ср, 12/11/2014 в 09:06 +0800, Wanpeng Li пишет:
> I observe that dl task can't be migrated to other cpus during cpu hotplug,
> in addition, task may/may not be running again if cpu is added back. The
> root cause which I found is that dl task will be throtted and removed from
> dl rq after com
On Wed, Nov 12, 2014 at 03:08:44PM +, Juri Lelli wrote:
> > @@ -1185,8 +1223,9 @@ static int find_later_rq(struct task_struct *task)
> > * We have to consider system topology and task affinity
> > * first, then we can look for a suitable cpu.
> > */
> > - cpumask_copy(later_mas
Hi,
On 12/11/14 01:06, Wanpeng Li wrote:
> I observe that dl task can't be migrated to other cpus during cpu hotplug,
> in addition, task may/may not be running again if cpu is added back. The
> root cause which I found is that dl task will be throtted and removed from
> dl rq after comsuming a
I observe that dl task can't be migrated to other cpus during cpu hotplug,
in addition, task may/may not be running again if cpu is added back. The
root cause which I found is that dl task will be throtted and removed from
dl rq after comsuming all budget, which leads to stop task can't pick it
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