They say 1.25+k, in this context k will be some constant, suppose it's 16 bytes Thus you might see a curve like 13, 32, 56, 86 - this curve is aggressive to st

They say 1.25+k, in this context k will be some constant, suppose it's 16 bytes Thus you might see a curve like 13, 32, 56, 86 - this curve is aggressive to start but then much gentler. Because it's so gentle it gets the re-use upside for medium sized allocations but it incurs a lot more copying, I can imagine in Python that might be a good trade.