[igt-dev] [PATCH i-g-t 5/9] trace.pl: Improved key/colours

Fri Jul 13 00:52:04 UTC 2018

On 7/12/2018 3:59 AM, Tvrtko Ursulin wrote:
> From: John Harrison <John.C.Harrison at Intel.com>
>
> Improve the timeline legend to show actual context colours.
>
> v2: (Tvrtko Ursulin)
>   * Commit msg.
>   * Tweak layout for more compactness and more readability.
>
> Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin at intel.com>
> Cc: John Harrison <John.C.Harrison at Intel.com>
> Cc: Tvrtko Ursulin <tvrtko.ursulin at intel.com>
> ---
>   scripts/trace.pl | 69 ++++++++++++++++++++++++++++++------------------
>   1 file changed, 43 insertions(+), 26 deletions(-)
>
> diff --git a/scripts/trace.pl b/scripts/trace.pl
> index 7cafb3f52ba4..bd3039511f5d 100755
> --- a/scripts/trace.pl
> +++ b/scripts/trace.pl
> @@ -738,9 +738,35 @@ say sprintf('GPU: %.2f%% idle, %.2f%% busy',
>   	     $flat_busy{'gpu-idle'}, $flat_busy{'gpu-busy'}) unless $html;
>   
>   my $timeline_text = $colour_contexts ?
> -		    'Per context coloured shading like:' : 'Box shading like:';
> +		    'per context coloured shading like' : 'box shading like';
>   
>   my %ctx_colours;
> +my $ctx_table;
> +
> +sub generate_ctx_table
> +{
> +	my @states = ('queue', 'ready', 'execute', 'ctxsave', 'incomplete');
> +	my @ctxts;
> +
> +	if( $colour_contexts ) {
> +		@ctxts = sort keys %ctxdb;
> +	} else {
> +		@ctxts = ($min_ctx);
> +	}
> +
> +	$ctx_table .= '<table>';
> +
> +	foreach my $ctx (@ctxts) {
> +		$ctx_table .= "<tr>\n";
> +		$ctx_table .= "  <td>Context $ctx</td>\n" if $colour_contexts;
> +		foreach my $state (@states) {
> +			$ctx_table .= "  <td align='center' valign='middle'><div style='" . box_style($ctx, $state) . " padding-top: 6px; padding-bottom: 6px; padding-left: 6x; padding-right: 6px;'>" . uc($state) . "</div></td>\n";
> +		}
> +		$ctx_table .= "</tr>\n";

As mentioned in the email, I would definitely add something like:
     my $i = 0;
     ...
     if( $i++ > 5)  {
         $ctx_table .= "<tr><td>etc...</td></tr>";
         last;
     }

I've had to analyse traces with hundreds of contexts in them before now. 
Which would produce an HTML file swamped by a huge legend (albeit with a 
beautifully smoothly shaded rainbow!).

With that...

Signed-off-by: John Harrison<John.C.Harrison at Intel.com>
Reviewed-by: John Harrison<John.C.Harrison at Intel.com>

> +	}
> +
> +	$ctx_table .= '</table>';
> +}
>   
>   sub generate_ctx_colours
>   {
> @@ -754,12 +780,7 @@ sub generate_ctx_colours
>   
>   
>   generate_ctx_colours() if $html and $colour_contexts;
> -
> -my $queued_style = box_style($min_ctx, 'queue');
> -my $ready_style = box_style($min_ctx, 'ready');
> -my $execute_style = box_style($min_ctx, 'execute');
> -my $ctxsave_style = box_style($min_ctx, 'ctxsave');
> -my $incomplete_style = box_style($min_ctx, 'incomplete');
> +generate_ctx_table() if $html;
>   
>   print <<ENDHTML if $html;
>   <!DOCTYPE HTML>
> @@ -778,35 +799,27 @@ print <<ENDHTML if $html;
>   </head>
>   <body>
>   <p>
> -<b>Timeline request view:</b>
> +<b>Timeline request view is $timeline_text:</b>
>   <table>
> -<tr><td colspan='4'>$timeline_text</td></tr>
>   <tr>
> -<td align='center'><div style='$queued_style'>QUEUED</div></td>
> -<td align='center'><div style='$ready_style'>READY</div></td>
> -<td align='center'><div style='$execute_style'>EXECUTE</div></td>
> -<td align='center'><div style='$ctxsave_style'>CTXSAVE</div></td>
> -</tr><tr>
> -<td></td>
> -<td></td>
> -<td align='center'><div style='$incomplete_style'>(INCOMPLETE)</div></td>
> -<td></td>
> -</tr/></table>
> -</p>
> -<p>
> -<small>
> -QUEUED = requests executing on the GPU<br>
> +<td>
> +$ctx_table
> +</td>
> +<td>
> +QUEUE = requests executing on the GPU<br>
>   READY = runnable requests waiting for a slot on GPU<br>
>   EXECUTE = requests waiting on fences and dependencies before they are runnable<br>
>   CTXSAVE = GPU saving the context image<br>
> -</small>
> -</p>
> +INCOMPLETE = request of unknown completion time
>   <p>
>   Boxes are in format 'ctx-id/seqno'.
>   </p>
>   <p>
>   Use Ctrl+scroll-action to zoom-in/out and scroll-action or dragging to move around the timeline.
>   </p>
> +</td>
> +</tr>
> +</table>
>   <p>
>   <b>GPU idle: $flat_busy{'gpu-idle'}%</b>
>   <br>
> @@ -975,20 +988,24 @@ sub box_style
>   {
>   	my ($ctx, $stage) = @_;
>   	my $deg;
> +	my $text_col = 'white';
>   
>   	if ($stage eq 'queue') {
>   		$deg = 90;
> +		$text_col = 'black' if $colour_contexts;
>   	} elsif ($stage eq 'ready') {
>   		$deg = 45;
>   	} elsif ($stage eq 'execute') {
>   		$deg = 0;
> +		$text_col = 'black' if $colour_contexts;
>   	} elsif ($stage eq 'ctxsave') {
>   		$deg = 105;
> +		$text_col = 'black' if $colour_contexts;
>   	} elsif ($stage eq 'incomplete') {
>   		$deg = 0;
>   	}
>   
> -	return 'color: black; background: repeating-linear-gradient(' .
> +	return "color: $text_col; background: repeating-linear-gradient(" .
>   		$deg . 'deg, ' .
>   		ctx_colour($ctx, $stage, 1.0) . ', ' .
>   		ctx_colour($ctx, $stage, 1.0) . ' 10px, ' .

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