can you send the command you use to transfer the file?
[EMAIL PROTECTED] wrote:
I'm transferring five ISO images, about 600 MB each, 3.1 GB in total. The
numbers are the ones that GridFTP reports when run with the -vb option, so I
guess they do not include startup delays. The same applies for scp.
-----Ursprüngliche Nachricht-----
Von: Richard Wellner, Jr. [mailto:[EMAIL PROTECTED]
Gesendet: Dienstag, 18. September 2007 16:32
An: Assfalg,Christian (APER) BIP-DE-B; [email protected]
Betreff: Re: [gt-user] What encryption algorythmus does GridFTP use with
-data-channel-private?
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
