Re: [PATCH v7 19/21] simplebench/results_to_text: add difference line to the table

[Max Reitz <mreitz@redhat.com>]

On 21.10.20 16:58, Vladimir Sementsov-Ogievskiy wrote:
> Performance improvements / degradations are usually discussed in
> percentage. Let's make the script calculate it for us.
> 
> Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
> ---
>   scripts/simplebench/results_to_text.py | 67 +++++++++++++++++++++++---
>   1 file changed, 60 insertions(+), 7 deletions(-)
> 
> diff --git a/scripts/simplebench/results_to_text.py b/scripts/simplebench/results_to_text.py
> index 479f7ac1d4..56fdacf7ca 100644
> --- a/scripts/simplebench/results_to_text.py
> +++ b/scripts/simplebench/results_to_text.py

[...]

> +            for j in range(0, i):
> +                env_j = results['envs'][j]
> +                res_j = case_results[env_j['id']]
> +                cell += ' '
> +
> +                if 'average' not in res_j:
> +                    # Failed result
> +                    cell += '--'
> +                    continue
> +
> +                col_j = tab[0][j + 1] if named_columns else ''
> +                diff_pr = round((res['average'] - res_j['average']) /
> +                                res_j['average'] * 100)
> +                cell += f' {col_j}{diff_pr:+}%'

Contrasting to v6, you added the "cell += ' '" line, dropped a space in 
the "cell += '--'" line (was: "cell += ' --'"), but kept the space here. 
  I would have assumed that the leading space is dropped here, too.  But 
I don’t quite know, what I should be expecting, so.

Anyway, I’ll just leave this here:

Reviewed-by: Max Reitz <mreitz@redhat.com>

> +            row.append(cell)
> +        tab.append(row)
> +
> +    return f'All results are in {dim}\n\n' + tabulate.tabulate(tab)
>