tl;dr - the smaller the value, the sooner each file will start to upload.
can use task manager, resource monitor, sysinternals process explorer or any number of such other tools.
yes. a debug log would show that.
check out my summary of the two types of cache
for each file, it is a two-step process
- calculate the hash. to do that, rclone has to read the entire file.
- upload the file.
in addition to the rclone two-step, at the same time, ATI can be writing a new file into the cache.