Re: [PATCH v7] perf annotate: Fix sample events lost in stdio mode

[Namhyung Kim]

Hi Yang and Arnaldo,

On Sat, Mar 27, 2021 at 11:16 AM Yang Jihong <yangjihong1@xxxxxxxxxx> wrote:
> On 2021/3/26 20:06, Arnaldo Carvalho de Melo wrote:
> > So it seems to be working, what am I missing? Is this strictly non
> > group related?
> >
> Yes, it is non group related.
> This problem occurs only when different events need to be recorded at
> the same time, i.e.:
> perf record -e branch-misses -e branch-instructions -a sleep 1
>
> The output results of perf script and perf annotate do not match.
> Some events are not output in perf annotate.

Yeah I think it's related to sort keys.  The code works with a single
hist_entry for each event and symbol.  But the default sort key
creates multiple entries for different threads and it causes the
confusion.

Thanks,
Namhyung