Displaying 2 results from an estimated 2 matches for "1899mb".
2020 Apr 08
6
Parallel transfers with sftp (call for testing / advice)
Hello, I'd like to share with you an evolution I made on sftp.
1. The need
I'm working at CEA (Commissariat ? l'?nergie atomique et aux ?nergies
alternatives) in France. We have a compute cluster complex, and our customers
regularly need to transfer big files from and to the cluster. Each of our front
nodes has an outgoing bandwidth limit (let's say 1Gb/s each, generally more
2020 May 04
3
Parallel transfers with sftp (call for testing / advice)
...the bottleneck is the source's relatively
> elderly 2.66GHz Intel CPU. In the second it's the gigabit network
> between them.
>
> $ scp -c aes256-ctr -o macs=hmac-sha2-512
> ubuntu-18.10-desktop-amd64.iso.bz2 nuc:/tmp/
> ubuntu-18.10-desktop-amd64.iso.bz2 100% 1899MB 63.5MB/s 00:29
>
> $ scp -c chacha20-poly1305 at openssh.com
> ubuntu-18.10-desktop-amd64.iso.bz2 nuc:/tmp/
> ubuntu-18.10-desktop-amd64.iso.bz2 100% 1899MB 112.1MB/s 00:16
>
Hi,
As Cyril said, we are aware of the cpubound aspect of the available
ciphers and MACs in...