On Sat, Nov 16, 2013 at 10:10 AM, Otis Gospodnetic < [email protected]> wrote:
> We use it in SPM (performance monitoring). We've contributed a patch > to lower the memory footprint for QDigest. The lib works well! :) > Hey Otis. If you look at these graphs, can you say anything about size/accuracy trade-offs of QD relative to what I am building? These graphs tell you what size digest you need for different levels of accuracy. If you only need 99%-ile and higher, you can use a 500Byte digest and get 0.5% accuracy or better. With 2K, you get 1% for the median, 0.5% for the 90-th %-ile and ~0.1% accuracy for 99% and higher. [image: Inline image 1] [image: Inline image 3]
