On Mon, Oct 7, 2024 at 6:27 AM Richard Biener
wrote:
>
> On Sat, Oct 5, 2024 at 10:17 AM Andi Kleen wrote:
> >
> > From: Andi Kleen
> >
> > Time vars normally use times(2) to get the user/sys/wall time, which is
> > always a
> > system call. I don't think the system time is very useful because
> So, shouldn't we go without the new option and simply change
> -ftime-report behavior?
I think it's fine (given the constraints I outlined earlier).
It will slightly change the output, but I guess there aren't that many
users that parse it mechanically.
I can do that unless someoneelse objects.
On Sat, Oct 5, 2024 at 10:17 AM Andi Kleen wrote:
>
> From: Andi Kleen
>
> Time vars normally use times(2) to get the user/sys/wall time, which is
> always a
> system call. I don't think the system time is very useful because most
> overhead
> is in user time. If we only use the wall (or monoto
From: Andi Kleen
Time vars normally use times(2) to get the user/sys/wall time, which is always a
system call. I don't think the system time is very useful because most overhead
is in user time. If we only use the wall (or monotonic) time modern OS have an
optimized path to get it directly from a
