Formula was stalled for very low values

For 128 it would stop at 97 never increasing because the
moving average being used is an integer. Perhaps I should
reconsider and use floats instead.

For now I have changed the formula to not block at 97,
by dividing by 8 instead of 32. We now increase enough
that we can increase past the threshold.

Author: lhoguin

deps/rabbit/src/rabbit_reader.erl

@@ -546,7 +546,7 @@ maybe_resize_buffer(State=#v1{sock=Sock, dynamic_buffer_size=BufferSize0,
     LowDynamicBuffer = 128,
     HighDynamicBuffer = 131072,
     DataLen = byte_size(Data),
-    MovingAvg = (MovingAvg0 * 31 + DataLen) div 32,
+    MovingAvg = (MovingAvg0 * 7 + DataLen) div 8,
     if
         BufferSize0 < HighDynamicBuffer andalso MovingAvg > BufferSize0 * 0.9 ->
             BufferSize = min(BufferSize0 * 2, HighDynamicBuffer),