That doc string raises so many questions. First, it says minimum which to me implies that in some cases larger value is used, but no clue when. Secondly, why is the default 1 and what is the allowed range of values? Being 1 implies to me that there is some cost associated with the reservations, otherwise the default would be much higher? Is the 0x33 from the article completely random, would 2 worked just as well? What are the implications of using high value here?