Hey all! We’re running Syncthing on our Synology Nas moving a couple TB of data to and from our artists around the world. I was poking around the Advanced settings when I saw you can boost the amount of concurrent writes Syncthing is capable of. Seems to me that I could double or triple this from 2 to 4 or 6 and get much quicker transfers yeah? I’m sure this increase CPU usage so it would need to be monitored but it does seem that simple.
Am I missing something? I wanted to formally ask since it is an advanced setting and I don’t want to go flipping switches in there without being sure.
I don’t see how number of files would affect the speed at which your disk is able to read (disks read blocks, they don’t even know about files) or the speed of your internet, which is usually the bottleneck.
It might have a benefit if you have tiny (sub 128k) files, and most likely have downside for anything bigger than 128k.
Max concurrent writes is specifically just about how many write requests we have outstanding towards the filesystem at any given point. If you have a disk system where each request is slow (spinning disks) but it can handle a lot of them concurrently (RAID of many spinning disks) then increasing this might be helpful. In most other cases it won’t. It doesn’t affect anything about how Syncthing requests data over the network.