Jan Ehrhardt via curl-library (Wed, 15 Aug 2018 22:51:34 +0200):
>Network connection: about 200 Mbits/s up, 200ms latency (speedtest.net)
>Test file: 178 MB mp4
>Protocol: sftp
>
>iPad app 32 KB libssh2 buffer: 2147 seconds
>iPad app 320 KB libssh2 buffer: 737 seconds
>Filezilla (out-of-the-box) : 967 seconds
>curl x64 512 KB upload buffer: 1154 seconds

We had a real oops when we tested the same 178 MB over plain FTP:

curl x64 512KB upload buffer FTP: 16 seconds
https upload php uploadprogress : 489 seconds

  % Total % Received % Xferd Average Speed Time Time Time Current
                                 Dload Upload Total Spent Left Speed
100 176M 0 0 100 176M 0 11.0M 0:00:16 0:00:16 --:--:-- 13.6M
start:2.062000 total:16.01500a0

Unencrypted uploads are legally (the HIPAA act) prohibited, but the
price for encryption is really high.

-- 
Jan 
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