On 1/15/21 9:55 AM, Jack wrote: [snip] >>>> >>>> I don't know where does the file he sync from. >>>> If you sync a file from a server in other city, for a 20 to 22MB/s speed >>>> is very normal. But if in home, that is not good. >>>> >>>> And for ftp and rsync. >>>> ftp is better for transferring a single large file once. >>>> rsync is better for a long-term, incremental synchronization. The >>>> file verification of rsync may take a lot of time for first sync. >>> There is a theoretical network speed as already mentioned. There is a >>> protocol speed, which may limit throughput if it has e.g. heavy encryption/ >>> compression and the CPU is anaemic. Finally, there is a MoBo bus >>> (SCSI/SATA/ >>> USB) and the media storage limit. If using USB 1.1 or 2.0 and/or the disks >>> are slow or experience write amplification, you'll find this will constrain >>> the final transfer speed significantly. >> The computers on this network are 2-meters apart and they both use SSD Drive >> (so USB limitation doesn't come under consideration). >> Like I said, on my home network when I transfer the 24GB file I get about >> 110MiBps transfer, so I was expecting the same in remote location). >> Some units are connected to a router Ausus RT-AC66U B1 but these ports are >> gigabit too. > When you say the computers are remote, is it possible the file is passing > through your local computer on the way between the two remote machines? > Where are you actually running the rsync command?
The fact that I'm logged via ssh over VPN to a remote network should not have any influence over network speed. I just made a loop: Network A ==> Internet ==> Network B ssh back to Network A over internet and run "rsync" I got same speed (as if I run the command locally) on Network A 112MB/s So the limiting factor is somewhere else.
