5 ms·
I wanted to use this tool for backing up my laptop to my NAS, however it only allows SSH to be used for data transfer, which is a real bottleneck for speed. It
by parshimers 7y ago
I wanted to use this tool for backing up my laptop to my NAS, however it only allows SSH to be used for data transfer, which is a real bottleneck for speed. It basically means you can only transfer as fast as one core can decrypt or encrypt data on either end of the pipe.
I ended up using https://github.com/oetiker/znapzend https://github.com/oetiker/znapzend instead, because it can use mbuffer for the actual data transfer, which is much faster.
- kogir 7y agoIs SSH speed a real limitation you’ve measured? I was able to easily saturate a 1 Gbps link for days using ZFS send over SSH with an Intel Atom when initializing my remote backups.
- parshimers 7y agoYes. I have an Atom on one end of the pipe as well, but it's over 10Gbe and to a 6 drive mirrored and striped vdev. Using SSH as the transport it would only approach 100MB/s, using mbuffer it can max out the storage at about 250-275MB/s.