为什么我的 .chia/mainnet/ 里有一个超大体积 profile-node 文件夹？Why is there a large profile-node folder in my .chia/mainnet/?

[mustangup]

.chia/mainnet/profile-node 目录里有100多万的文件，文件名都是slot-*.profile，总大小达到60GB左右。
其他矿机的 .chia/mainet/ 中就没有 profile-node 这个文件夹。

There are more than 1 million files in the .chia/mainnet/profile-node directory, the file names are all slot-*.profile, and the total size reaches about 60GB.
There is no profile-node folder in .chia/mainet/ of other miners.