Appending to a slice I get these capacities: cap: 1 cap: 2 cap: 4 ... cap: 512 cap: 1024 cap: 1312 cap: 1696 cap: 2208 cap: 3072

Appending to a slice I get these capacities: cap: 1 cap: 2 cap: 4 ... cap: 512 cap: 1024 cap: 1312 cap: 1696 cap: 2208 cap: 3072 cap: 4096 cap: 5120 cap: 7168 ... cap: 192797696 cap: 240997376 So it looks like it starts by doubling, then it gets weird between 1024 and 4096, and then it multiplies by 1.25.