Hi Peter, Steve,
Thanks for all your valuable sharing.
I'll keep them in mind.
Regards,
Xunlei
On 30 January 2015 at 03:23, Peter Zijlstra wrote:
> On Fri, Jan 30, 2015 at 12:42:47AM +0800, Xunlei Pang wrote:
>> On 27 January 2015 at 22:56, Steven Rostedt wrote:
>> > On Tue, 27 Jan 2015
Hi Peter, Steve,
Thanks for all your valuable sharing.
I'll keep them in mind.
Regards,
Xunlei
On 30 January 2015 at 03:23, Peter Zijlstra pet...@infradead.org wrote:
On Fri, Jan 30, 2015 at 12:42:47AM +0800, Xunlei Pang wrote:
On 27 January 2015 at 22:56, Steven Rostedt rost...@goodmis.org
On Fri, Jan 30, 2015 at 12:42:47AM +0800, Xunlei Pang wrote:
> On 27 January 2015 at 22:56, Steven Rostedt wrote:
> > On Tue, 27 Jan 2015 15:21:36 +0100
> > Peter Zijlstra wrote:
> >
> >> On Mon, Jan 19, 2015 at 04:49:40AM +, Xunlei Pang wrote:
> >> > In find_lowest_rq(), if we can't find a
On Fri, 30 Jan 2015 00:42:47 +0800
Xunlei Pang wrote:
> I think the responsiveness is the most important feature for RT tasks,
> so I think:
> response latency > cache > SMT in significance.
Unfortunately, sometimes cache affects response latency.
>
> I was wondering if we can take the
On 27 January 2015 at 22:56, Steven Rostedt wrote:
> On Tue, 27 Jan 2015 15:21:36 +0100
> Peter Zijlstra wrote:
>
>> On Mon, Jan 19, 2015 at 04:49:40AM +, Xunlei Pang wrote:
>> > In find_lowest_rq(), if we can't find a wake_affine cpu from
>> > sched_domain, then we can actually determine a
On 27 January 2015 at 22:56, Steven Rostedt rost...@goodmis.org wrote:
On Tue, 27 Jan 2015 15:21:36 +0100
Peter Zijlstra pet...@infradead.org wrote:
On Mon, Jan 19, 2015 at 04:49:40AM +, Xunlei Pang wrote:
In find_lowest_rq(), if we can't find a wake_affine cpu from
sched_domain, then
On Fri, 30 Jan 2015 00:42:47 +0800
Xunlei Pang pang.xun...@linaro.org wrote:
I think the responsiveness is the most important feature for RT tasks,
so I think:
response latency cache SMT in significance.
Unfortunately, sometimes cache affects response latency.
I was wondering if we
On Fri, Jan 30, 2015 at 12:42:47AM +0800, Xunlei Pang wrote:
On 27 January 2015 at 22:56, Steven Rostedt rost...@goodmis.org wrote:
On Tue, 27 Jan 2015 15:21:36 +0100
Peter Zijlstra pet...@infradead.org wrote:
On Mon, Jan 19, 2015 at 04:49:40AM +, Xunlei Pang wrote:
In
On Tue, Jan 27, 2015 at 09:56:26AM -0500, Steven Rostedt wrote:
> On Tue, 27 Jan 2015 15:21:36 +0100
> Peter Zijlstra wrote:
>
> > On Mon, Jan 19, 2015 at 04:49:40AM +, Xunlei Pang wrote:
> > > In find_lowest_rq(), if we can't find a wake_affine cpu from
> > > sched_domain, then we can
On Tue, 27 Jan 2015 15:21:36 +0100
Peter Zijlstra wrote:
> On Mon, Jan 19, 2015 at 04:49:40AM +, Xunlei Pang wrote:
> > In find_lowest_rq(), if we can't find a wake_affine cpu from
> > sched_domain, then we can actually determine a cache hot cpu
> > instead of simply calling
On Mon, Jan 19, 2015 at 04:49:40AM +, Xunlei Pang wrote:
> In find_lowest_rq(), if we can't find a wake_affine cpu from
> sched_domain, then we can actually determine a cache hot cpu
> instead of simply calling "cpumask_any(lowest_mask)" which
> always returns the first cpu in the mask.
>
>
On Mon, Jan 19, 2015 at 04:49:40AM +, Xunlei Pang wrote:
In find_lowest_rq(), if we can't find a wake_affine cpu from
sched_domain, then we can actually determine a cache hot cpu
instead of simply calling cpumask_any(lowest_mask) which
always returns the first cpu in the mask.
So, we
On Tue, 27 Jan 2015 15:21:36 +0100
Peter Zijlstra pet...@infradead.org wrote:
On Mon, Jan 19, 2015 at 04:49:40AM +, Xunlei Pang wrote:
In find_lowest_rq(), if we can't find a wake_affine cpu from
sched_domain, then we can actually determine a cache hot cpu
instead of simply calling
On Tue, Jan 27, 2015 at 09:56:26AM -0500, Steven Rostedt wrote:
On Tue, 27 Jan 2015 15:21:36 +0100
Peter Zijlstra pet...@infradead.org wrote:
On Mon, Jan 19, 2015 at 04:49:40AM +, Xunlei Pang wrote:
In find_lowest_rq(), if we can't find a wake_affine cpu from
sched_domain, then we
In find_lowest_rq(), if we can't find a wake_affine cpu from
sched_domain, then we can actually determine a cache hot cpu
instead of simply calling "cpumask_any(lowest_mask)" which
always returns the first cpu in the mask.
So, we can determine the cache hot cpu during the interation of
In find_lowest_rq(), if we can't find a wake_affine cpu from
sched_domain, then we can actually determine a cache hot cpu
instead of simply calling cpumask_any(lowest_mask) which
always returns the first cpu in the mask.
So, we can determine the cache hot cpu during the interation of
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