Take your average latency, which is ping + 50% (in the event of slower lines), multiply that number by your proposed (advertised) speed and divide that value by 8. You have your raw RWIN.
Example: 50ms average latency x 1.5, with 1500Kbps available (purchased) downstream bandwidth:
75 x 1500kbps = 112500 divided by 8 = 14063 RWIN.
However, when dropping RWIN below 8192 (which is Windows default for Windows 95/98/NT, while Windows Me and 2000 use default of 16384), try using even multiples of MSS. Your MSS is listed on the Tweaks test.For more information please refer to this page.
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by DrTCP  edited by JMGullett
last modified: 2007-02-27 09:58:13 |
