Merge pull request Netflix#27 from Netflix/feature/rtt_tolerance

Introduce tolerance for changes in RTT as a means to reduce volatility

Merge pull request Netflix#25 from Netflix/feature/min_threshold

Min rtt threshold should be in nanos

Merge pull request Netflix#24 from Netflix/feature/min_threshold

Eliminated unusually low values that skew the limit estimation

Merge pull request Netflix#23 from Netflix/feature/vegas_pre_extend_l…

…imit

Gradient algo improvements

Merge pull request Netflix#23 from Netflix/feature/vegas_pre_extend_l…

…imit

Gradient algo improvements

Merge pull request Netflix#22 from Netflix/feature/fast_sqrt

Optimized function for calculating square roots

Merge pull request Netflix#20 from Netflix/bugfix/unregister_old_guage

Re-add deprecated method, for now

Merge pull request Netflix#19 from Netflix/bugfix/unregister_old_guage

bugfix: unregister old gauge

Merge pull request Netflix#18 from Netflix/feature/gradient_algo

Add smoothing to Vegas

Merge pull request Netflix#17 from Netflix/feature/gradient_algo

Gradient based algorithm to detect the concurrency limit