nanog mailing list archives
Re: WAN transfer rates
From: Iljitsch van Beijnum <iljitsch () muada com>
Date: Tue, 11 May 2004 11:19:07 +0200
On 11-mei-04, at 10:24, Jeff Nelson wrote:
I realize that transfer rates across the Internet diminish significantlywith latency, but what's the good answer for someone shrunk down to <10Mbps when the smallest pipe between them is 100Mbps and latency is <40ms?
Does anyone have reference to any study done in this area? I'm sure window tuning can alter this, but I'm interested in average statistics.
The best you can do is transfer a window size per round trip. You can see the window size with tcpdump or one of its cousins, and looking at netstat output will get you somewhere in the neighborhood too. So if your window is 16k and your RTT 25 ms, that's 16k every 25 ms. Or 16 * 1000 / 25 = 640k per second = 640000 * 8 = 5 Mbps.
Current thread:
- WAN transfer rates Jeff Nelson (May 11)
- Re: WAN transfer rates sthaug (May 11)
- Re: WAN transfer rates Iljitsch van Beijnum (May 11)
- Re: WAN transfer rates Bora Akyol (May 11)
- <Possible follow-ups>
- Re: WAN transfer rates Vincent J. Bono (May 11)
- Re: WAN transfer rates Peter Lothberg (May 11)
- Re: WAN transfer rates Eric Kuhnke (May 11)