[Intel-gfx] [PATCH i-g-t 03/10] gem_wsim: Show workload timing stats

[Chris Wilson]

Quoting Tvrtko Ursulin (2020-06-17 17:01:13)
> From: Tvrtko Ursulin <tvrtko.ursulin at intel.com>
> 
> Show average/min/max workload iteration and dropped period stats when 'p'
> command is used.
> 
> Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin at intel.com>
> ---
>  benchmarks/gem_wsim.c | 19 +++++++++++++++----
>  1 file changed, 15 insertions(+), 4 deletions(-)
> 
> diff --git a/benchmarks/gem_wsim.c b/benchmarks/gem_wsim.c
> index 9e5bfe6a36d4..60982cb73ba7 100644
> --- a/benchmarks/gem_wsim.c
> +++ b/benchmarks/gem_wsim.c
> @@ -2101,7 +2101,8 @@ static void *run_workload(void *data)
>         struct w_step *w;
>         int throttle = -1;
>         int qd_throttle = -1;
> -       int count;
> +       int count, missed = 0;
> +       unsigned long time_tot = 0, time_min = ULONG_MAX, time_max = 0;
>         int i;
>  
>         clock_gettime(CLOCK_MONOTONIC, &t_start);
> @@ -2121,12 +2122,19 @@ static void *run_workload(void *data)
>                                 do_sleep = w->delay;
>                         } else if (w->type == PERIOD) {
>                                 struct timespec now;
> +                               int elapsed;
>  
>                                 clock_gettime(CLOCK_MONOTONIC, &now);
> -                               do_sleep = w->period -
> -                                          elapsed_us(&wrk->repeat_start, &now);
> +                               elapsed = elapsed_us(&wrk->repeat_start, &now);
> +                               do_sleep = w->period - elapsed;
> +                               time_tot += elapsed;
> +                               if (elapsed < time_min)
> +                                       time_min = elapsed;
> +                               if (elapsed > time_max)
> +                                       time_max = elapsed;

Keep the running average?

>                                 if (do_sleep < 0) {
> -                                       if (verbose > 1)
> +                                       missed++;
> +                                       if (verbose > 2)
>                                                 printf("%u: Dropped period @ %u/%u (%dus late)!\n",
>                                                        wrk->id, count, i, do_sleep);
>                                         continue;
> @@ -2280,6 +2288,9 @@ static void *run_workload(void *data)
>                 printf("%c%u: %.3fs elapsed (%d cycles, %.3f workloads/s).",
>                        wrk->background ? ' ' : '*', wrk->id,
>                        t, count, count / t);
> +               if (time_tot)
> +                       printf(" Time avg/min/max=%lu/%lu/%luus; %u missed.",
> +                              time_tot / count, time_min, time_max, missed);
>                 putchar('\n');
>         }
>  
> -- 
> 2.20.1
> 
> _______________________________________________
> Intel-gfx mailing list
> Intel-gfx at lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/intel-gfx
>