Hello! I've been doing some performance measurements with GridFTP and safe / secure data channels, that is using the -data-channel-safe and -data-channel-private options.
This showed that the performance between two 2.2 Ghz Opteron machines on the same switch topps at about 10 MB/sec for -data-channel-private and -p 2 / -p 4. I am wondering what kind of encryption algorythm and implementation GridFTP uses? Scp reaches transfer rates of up to 35 MB/sec on the same scenario using the aes128-cbc cipher. This is actually quite near the maximum disk IO I observed using iostat, and can only be achieved on subsequent runs. I'm not shure wether CPU or disk is actually the bottleneck here. Regards, Christian Aßfalg
