Precise user stats

[beberlei]

The locust stats outputs are already aggregated and don't calculate precise percentiles. We want to export every request made during the benchmark and then calculate 1 minute based hdr histograms, exactly like the Tideways backend does.

• [x] Use JmeterListener from locust_plugins to get log output with every request tracked.
• [x] Refactor LocustStatsParser to interpret Jmeter data.
• [x] Add Histogram chart generation for overall, listings and product-details, including horizontal markers for median, 90%, 95% and include them in the report.

For the beginning we use the 95% percentile and group it into 5 grades A-D, F. We render a histogram with the distribution of responses into each grade category and compute a color based on 95% of requests being within a category.

Fixes #24

[private-packagist[bot]]

composer.lock

Package changes

Package	Operation	From	To	Changes
beberlei/hdrhistogram-php-stubs	add	-	v1.0.1	view code

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