diff options
| -rw-r--r-- | lib/server/TcpNice.cpp | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/lib/server/TcpNice.cpp b/lib/server/TcpNice.cpp index 88d08bda..7cd2df24 100644 --- a/lib/server/TcpNice.cpp +++ b/lib/server/TcpNice.cpp @@ -35,7 +35,10 @@ TcpNice::TcpNice() mGammaPercent(100), mAlphaStar(100), mDeltaPercent(10) -{ } +{ + mRateEstimateMovingAverage[0] = 0; + mRateEstimateMovingAverage[1] = 0; +} // -------------------------------------------------------------------------- // @@ -67,6 +70,18 @@ int TcpNice::GetNextWindowSize(int bytesChange, box_time_t timeElapsed, (((100 - mDeltaPercent) * mRateEstimateMovingAverage[1]) / 100) + ((mDeltaPercent * rateLastPeriod) / 100); + /* + * b is the number of bytes sent during the previous control period + * T is the length (in us) of the previous control period + * rtt is the round trip time (in us) reported by the kernel on the socket + * e is epsilon, a parameter of the formula, calculated as alpha/rtt + * rb is the actual rate (goodput) over the previous period + * rbhat is the previous (last-but-one) EWMA rate estimate + * raw is the unscaled adjustment to the window size + * gamma is the scaled adjustment to the window size + * wb is the final window size + */ + BOX_TRACE("TcpNice: " "b=" << bytesChange << ", " "T=" << timeElapsed << ", " |