Earlier today, Baron Schwartz hosted a live webinar that took a deep look at percentiles and their role in performance monitoring. This is a tricky, engaging subject: as Baron wrote in a blog post last year, "Customers ask us for p99 (99th percentile) of metrics pretty frequently" -- but percentiles often don't work the way many people think.
You can access a recording of today's webinar here, where Baron returned to that subject and illuminated many of the finer points of percentiles, this time examining why people ought to be careful around percentiles and how people can best use them to their advantage.
In order to continue the discussion still further, we've chosen a few of the webinar's most impactful slides and included them here. Additionally, the entire slide deck is available below. While the best way to learn about Baron's thoughts on percentiles is to enjoy the webinar in full, take a look at the slides and watch for more pieces from us in the future, as we're sure to continue our dissection of percentiles in database monitoring, exploring the best ways to visualize them, be wary of them, win with them, and succeed with other concepts and models that are closely related.
In the meantime, want to catch Baron's next webinar? You can register now for "What's New in MySQL 8.0 and PostgreSQL 9.6," live on October 25, 2016.
Select Slides from "Monitoring with Percentiles"