message: Increase LZ4 compression acceleration value to 20
  * This has minimal effect on compression ratio for a sample workload and a good
  improvement in compression speed.
diff: @@ -127,7 +127,7 @@ bool LZ4Compressor::FlushPage0()
  // m_PageOffset is the amount written, usually equal to lz4BlockSize except the last block.
  int32_t compSize =
  LZ4_compress_fast_continue(m_LZ4Comp, (const char *)m_Page[0], (char *)m_CompressBuffer,
  - (int)m_PageOffset, (int)LZ4_COMPRESSBOUND(lz4BlockSize), 1);
  + (int)m_PageOffset, (int)LZ4_COMPRESSBOUND(lz4BlockSize), 20);
  if(compSize < 0)
  {
  