10 ms·
What's up with those latency numbers? Seem huge to me.
by lbolla 10y ago
What's up with those latency numbers? Seem huge to me.
- sitkack 10y agoWho measures average latency? Nearly meaningless.
- shincert 10y agoI'm curious. Why is it meaningless? What would you measure?
- sitkack 10y agoYou almost never want to use average as your metric when dealing with time. For time, the 95 or 99 percentile latency is going to be measure of how many requests out of a hundred a less than your metric. Esp when the thing you are measuring is a piece of larger system, which is the crux, because of how a resource in turn requests k-more resources. Each request has an equal chance of being over the latency percentile. Even at 10 requests, only 90% of sessions will be under the 99% latency. See also, Gil Tene https://www.youtube.com/watch?v=lJ8ydIuPFeU https://www.youtube.com/watch?v=lJ8ydIuPFeU A nice overview, http://bravenewgeek.com/everything-you-know-about-latency-is-wrong/ http://bravenewgeek.com/everything-you-know-about-latency-is... See also, http://highscalability.com/blog/2015/10/5/your-load-generator-is-probably-lying-to-you-take-the-red-pi.html http://highscalability.com/blog/2015/10/5/your-load-generato...