TLDR: It is not profile level 1 that is the problem; its a gotcha with the optional slowms argument that causes users to accidentally set verbose logging and fill their disk with log files. In MongoDB, there are two ways to see, with individual detail, which operations were executed and how long they took. Profiling. [&]

https://www.percona.com/blog/2019/11/15/dont-use-mongodb-profiling-level-1/