> Or, is the concern more about trying to time-slice the results in a
> fairly granular way and expecting accurate results then?
Usually the later. It's especially important for divisions. You want
both divisor and dividend to be in the same time slice, otherwise
the result usually doesn't make
On Thu, May 07, 2020 at 10:43:43PM -0700, Ian Rogers wrote:
> On Thu, May 7, 2020 at 2:47 PM Andi Kleen wrote:
> >
> > > > - without this change events within a metric may get scheduled
> > > > together, after they may appear as part of a larger group and be
> > > > multiplexed at different
On Wed, May 20, 2020 at 6:14 AM Jiri Olsa wrote:
>
> On Wed, May 20, 2020 at 12:28:07AM -0700, Ian Rogers wrote:
> > Metric groups contain metrics. Metrics create groups of events to
> > ideally be scheduled together. Often metrics refer to the same events,
> > for example, a cache hit and cache
On Wed, May 20, 2020 at 12:28:07AM -0700, Ian Rogers wrote:
> Metric groups contain metrics. Metrics create groups of events to
> ideally be scheduled together. Often metrics refer to the same events,
> for example, a cache hit and cache miss rate. Using separate event
> groups means these metrics
Metric groups contain metrics. Metrics create groups of events to
ideally be scheduled together. Often metrics refer to the same events,
for example, a cache hit and cache miss rate. Using separate event
groups means these metrics are multiplexed at different times and the
counts don't sum to
On Thu, May 7, 2020 at 2:47 PM Andi Kleen wrote:
>
> > > - without this change events within a metric may get scheduled
> > > together, after they may appear as part of a larger group and be
> > > multiplexed at different times, lowering accuracy - however, less
> > > multiplexing may
> > - without this change events within a metric may get scheduled
> > together, after they may appear as part of a larger group and be
> > multiplexed at different times, lowering accuracy - however, less
> > multiplexing may compensate for this.
>
> I agree the heuristic in this patch set
On Thu, May 7, 2020 at 10:48 AM Andi Kleen wrote:
>
> On Thu, May 07, 2020 at 01:14:29AM -0700, Ian Rogers wrote:
> > Metric groups contain metrics. Metrics create groups of events to
> > ideally be scheduled together. Often metrics refer to the same events,
> > for example, a cache hit and cache
On Thu, May 07, 2020 at 01:14:29AM -0700, Ian Rogers wrote:
> Metric groups contain metrics. Metrics create groups of events to
> ideally be scheduled together. Often metrics refer to the same events,
> for example, a cache hit and cache miss rate. Using separate event
> groups means these metrics
On Thu, May 7, 2020 at 6:49 AM Jiri Olsa wrote:
>
> On Thu, May 07, 2020 at 01:14:29AM -0700, Ian Rogers wrote:
> > Metric groups contain metrics. Metrics create groups of events to
> > ideally be scheduled together. Often metrics refer to the same events,
> > for example, a cache hit and cache
On Thu, May 07, 2020 at 01:14:29AM -0700, Ian Rogers wrote:
> Metric groups contain metrics. Metrics create groups of events to
> ideally be scheduled together. Often metrics refer to the same events,
> for example, a cache hit and cache miss rate. Using separate event
> groups means these metrics
Metric groups contain metrics. Metrics create groups of events to
ideally be scheduled together. Often metrics refer to the same events,
for example, a cache hit and cache miss rate. Using separate event
groups means these metrics are multiplexed at different times and the
counts don't sum to
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