in the link its stated
The user can even set the parameter upload_min_part_size in the config.php to manually set the threshold (which has to be between 5 MB and 5 GB). Amazon recommends to consider multi part uploads for all files above 100 MB. But smaller might benefit, too because multi part uploads can happen using concurrent connections (The default of the aws code is up to 3 connections for normal files and doing multipart from 5 MB).
the question is, what is the correct “safe” way to set the parameter
upload_min_part_size in the config.php? I don’t want just to add it arbitrary and mess up the server
also is it related to the “S3 multipart exception” ?