Group values for every 0.05 second interval between 0 and 5 seconds

[bobbingwide]

For slog-bloat I need the figures for each file being compared and need to know how many requests were dealt with in each interval of 1/20th of a second ( 0.05 secs ).
Otherwise the chart goes well wrong.
It's quite pretty... but useless.

1. Sort sequence on the x-axis is wrong
2. Labels are wrong
3. Values shouldn't drop to 0 for accumulated percentages!

These changes also apply to the Elapsed chart displayed in slog.

[bobbingwide]

I achieved the desired results with a few changes.

1. Sort sequence correct
2. Labels are correct - reflecting the file name
3. Values are determined for each interval

Prior to running the grouping I initialised the groups to the required time intervals with an init_groups method.
This is called for the Elapsed report.

function run_elapsed_report() {
	 	$this->grouper->reset();
		 $this->grouper->time_field('final');
		 $this->grouper->init_groups( array( $this, "twentiethsecond" ), 0, 0.05, 6.0 );
		 $this->grouper->groupby( "final", array( $this, "twentiethsecond" ) );
		 $this->grouper->ksort();
		 $this->grouper->having( array( $this, "having_filter_value_ge" ) );
		 //	 $grouper->report_percentages();
		 $content = $this->fetch_content();
		 return $content;
	 }

reset() is no longer called by groupby(). I need to check if any other code has to be changed. eg in wp-top12.

New requirements

Where the orginal server responses are bad the chart is OK.
See the lines for filtered.csv and ebpsuk0127.csv.
But when things are much quicker the values are a bit squashed.
We need more granularity; count requests in smaller intervals.

• The ability to specify the interval length and initialisation of the groups based on that value.
• The ability to set the maximum value for grouping. Note: Anything else gets bundled into this last group.

[bobbingwide]

The logic changes already implemented for slog-bloat also need implementing for slog's charts.
Could/should this be an option?

[bobbingwide]

reset() is no longer called by groupby(). I need to check if any other code has to be changed. eg in wp-top12.

Yes it did need changing.