It seems to me that you're referring to a) other data outside of the scope of this example and b) the fact that Whisper uses average data for rollups. This is a valid issue and one of the reasons for the new Ceres format.
The metrics I demonstrate in the article do not rollup. If they did I'd completely lose the data. That's why I keep them at 1-sec resolution for their lifetime (generally 1 year). In hindsight it seems your original comment was a general critique of one aspect of Graphite and outside the scope of this particular article.
The metrics I demonstrate in the article do not rollup. If they did I'd completely lose the data. That's why I keep them at 1-sec resolution for their lifetime (generally 1 year). In hindsight it seems your original comment was a general critique of one aspect of Graphite and outside the scope of this particular article.