On Feb 23, 2006, at 8:02 PM, Richard Labutis wrote:
I am running aix 4.3, 5.1, 5.2, 5.3 using various versions of openssh. why is there a speed limit in copying files from one machine to another. The speed appears to cap out at around 7-8 mb/sec. This is on a gigabit network. I know encryption has overhead, but not that much. scp and sftp is the commands used to copy files. It makes no difference what version of ssh/aix, it all has the same results. if I used rcp or ftp, it's very fast.
Take a look at this [1] for an explanation. Last I heard these patches were not accepted into the trunk because they didn't conform to some style guidelines. Corrections welcome...
cr [1] http://www.psc.edu/networking/projects/hpn-ssh/
