On 23.10.2019 20:19, Andi Kleen wrote:
> On Wed, Oct 23, 2019 at 07:16:13PM +0300, Alexey Budankov wrote:
>>
>> On 23.10.2019 17:52, Andi Kleen wrote:
>>> On Wed, Oct 23, 2019 at 04:30:49PM +0200, Jiri Olsa wrote:
On Wed, Oct 23, 2019 at 06:02:35AM -0700, Andi Kleen wrote:
> On Wed, Oct
On Wed, Oct 23, 2019 at 07:16:13PM +0300, Alexey Budankov wrote:
>
> On 23.10.2019 17:52, Andi Kleen wrote:
> > On Wed, Oct 23, 2019 at 04:30:49PM +0200, Jiri Olsa wrote:
> >> On Wed, Oct 23, 2019 at 06:02:35AM -0700, Andi Kleen wrote:
> >>> On Wed, Oct 23, 2019 at 11:59:11AM +0200, Jiri Olsa
On 23.10.2019 17:52, Andi Kleen wrote:
> On Wed, Oct 23, 2019 at 04:30:49PM +0200, Jiri Olsa wrote:
>> On Wed, Oct 23, 2019 at 06:02:35AM -0700, Andi Kleen wrote:
>>> On Wed, Oct 23, 2019 at 11:59:11AM +0200, Jiri Olsa wrote:
On Sun, Oct 20, 2019 at 10:51:57AM -0700, Andi Kleen wrote:
On Wed, Oct 23, 2019 at 04:30:49PM +0200, Jiri Olsa wrote:
> On Wed, Oct 23, 2019 at 06:02:35AM -0700, Andi Kleen wrote:
> > On Wed, Oct 23, 2019 at 11:59:11AM +0200, Jiri Olsa wrote:
> > > On Sun, Oct 20, 2019 at 10:51:57AM -0700, Andi Kleen wrote:
> > >
> > > SNIP
> > >
> > > > +}
> > > > diff
On Wed, Oct 23, 2019 at 06:02:35AM -0700, Andi Kleen wrote:
> On Wed, Oct 23, 2019 at 11:59:11AM +0200, Jiri Olsa wrote:
> > On Sun, Oct 20, 2019 at 10:51:57AM -0700, Andi Kleen wrote:
> >
> > SNIP
> >
> > > +}
> > > diff --git a/tools/perf/util/affinity.h b/tools/perf/util/affinity.h
> > > new
On Wed, Oct 23, 2019 at 11:59:11AM +0200, Jiri Olsa wrote:
> On Sun, Oct 20, 2019 at 10:51:57AM -0700, Andi Kleen wrote:
>
> SNIP
>
> > +}
> > diff --git a/tools/perf/util/affinity.h b/tools/perf/util/affinity.h
> > new file mode 100644
> > index ..e56148607e33
> > --- /dev/null
> >
On Sun, Oct 20, 2019 at 10:51:57AM -0700, Andi Kleen wrote:
SNIP
> +}
> diff --git a/tools/perf/util/affinity.h b/tools/perf/util/affinity.h
> new file mode 100644
> index ..e56148607e33
> --- /dev/null
> +++ b/tools/perf/util/affinity.h
> @@ -0,0 +1,15 @@
> +//
From: Andi Kleen
The kernel perf subsystem has to IPI to the target CPU for many
operations. On systems with many CPUs and when managing many events the
overhead can be dominated by lots of IPIs.
An alternative is to set up CPU affinity in the perf tool, then set up
all the events for that CPU,
8 matches
Mail list logo