Subject: file transfer times
From: Peter Q. Olsson (olsson@koyukuk.at.uaa.alaska.edu)
Date: Tue Apr 02 2002 - 11:19:42 AKST
Hello all-
I have a lan sitting behind a firewall that consists of several linux boxen and
a Sun ultra2 running solaris. I have found a great disparity between file
transfer rates among various boxes.
For example, transfering the same 1.2 MB file btwn box A and box B:
going in the direction A -> B I get a transfer rate of ~2000 kB/s
going in the opposite direction, B->A, I get a transfer rate of ~50 kB/s
This is quite a repeatable result, though of course the numbers vary somewhat
each time. Still the order of magnitude difference is the same.
Other combinations of boxes show intermediate results ~200-400 kB/s either
direction. scp also shows similar results, about a factor of 10 btwn directions
Any ideas as to what gives here?
PQO
__________________________________________________________________
| |
| Dr. Peter Q. Olsson, |
| Chief Scientist, Alaska Experimental Forecast Facility |
| University of Alaska Anchorage |
| 2811 Merrill Field Drive |
| Anchorage, AK 99501 |
| voice: (907) 264-7449 |
| fax : (907) 264-7444 |
| olsson@aeff.at.uaa.alaska.edu |
|__________________________________________________________________|
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