Please help finding a starting RWIN?

Question

I have a Intel PRO/100 VE Either card my settings show a Tcp Receive Window of 16060 and a MTU of 1500 on my Dr. TCP WinXP. I'm trying to find a better value to try but I'm not sure were to start. This set up runs around 2150 kbps but has a terrible hesitation before it starts.

sundance · Accepted Answer

Do you think my RWIN of 16060 is too low? My results are: Receive Window (RWIN): 16060 Window Scaling: off Path MTU Discovery: ON RFC1323 Window Scaling: OFF RFC1323 Time Stamping: OFF Selective Acks: ON MSS requested: 1460 TTL: unknown TTL remaining: 116

Mac · Answer

Try running the Tweak Test at this site:

formatting link

see what it says under Notes and recommendations: at the bottom of the first column. My results look like this:

Your Tweakable Settings: Receive Window (RWIN): 64240 Window Scaling: 0 Path MTU Discovery: ON RFC1323 Window Scaling: ON RFC1323 Time Stamping: OFF Selective Acks: ON MSS requested: 1460 TTL: (less any hops behind firewall) 65 TTL remaining: 51 Notes and recommendations: RWIN is in range Looking good

Mac

Mac · Answer

That figure does sound too low to me. What did it say underNotes and recommendations: ? I think that a RWIN of 64240might be a good one for you.Mac

David H. Lipman · Answer

Bert Hyman · Answer

(sundance) wrote innews:lPGdnU41H7_an     Try one of these and see what it suggests for "buffer size": can find lots more test sites like these by Googling on "NDT and7123"

Please help finding a starting RWIN?

Join the Discussion

Didn't find your answer?