How large a file are you transferring? GridFTP takes more time for start-up and the performance gains become evident only with large files.
rw2 On 9/18/07 2:47 AM, "[EMAIL PROTECTED]" <[EMAIL PROTECTED]> wrote: > 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 -- Rich Wellner Enterprise Architect Director of Professional Services Univa Corporation The Leaders of Open Source Cluster and Grid Software Lisle, IL 60532 Lisle: +1 630 563 8617 Mobile: +1 630 464 7650 London: +44 20 7193 8617 Email: [EMAIL PROTECTED] Web: http://www.univa.com
