kruser
Premium
join:2002-06-01
Chesterfield, MO
clubs:
 ·AT&T Southwest
| reply to d_l
Re: ACK Prioritization: a 4100/4100b vs. 5360 shootout
Baseline no upload | 
2wire with 65535 RWIN | 
2wire with 127776 RWIN | 
2210 with 65535 RWIN | 
2210 with 127776 RWIN |
The other tests were run with the same download running along with a large FTP upload running simultaneously. |
|
d_l
Barsoom
Premium,MVM
join:2002-12-08
Reno, NV
|  Thanks for doing those! They clearly show that the 2Wire has minimal ACK prioritization. As a very rough, eyeball guesstimate, it looks like the speeds during upload saturation might be about 160 KB/sec with 65K RWIN which would give about 25% or less of normal throughput (160/640). This agrees with your previous tests plotted on my first graph.
The 2210 doesn't look to have much ACK prioritization either. Maybe its speeds during upload saturation might be 150-180 KB which would be 23-28% of normal throughput. This is a little better than your previous testing on the AT&T speed tests, but then again it is really difficult to make a good estimate of average speeds from those throughput graphs.
This pretty much shows that the 2wire 1800HG and the 2210 suck for simultaneous download and uploads unless you use a larger RWIN and that can cause problems. I'm finding that the AT&T speeds tests won't always run in the evenings with an ~128K RWIN. |
|
