It measures PutObject[0] performance across different object sizes (1, 8, 100MiB)[1]. Seems to be an odd screenshot of text in the terminal.

[0] https://github.com/good-lly/s3mini/blob/30a751cc866855f783a1... [1] https://github.com/good-lly/s3mini/blob/30a751cc866855f783a1...