[OpenAFS] Re: WAN speed

Andrew Deason adeason@sinenomine.net
Thu, 22 Mar 2012 10:23:29 -0500

On Thu, 22 Mar 2012 15:20:20 +0000
Simon Wilkinson <simonxwilkinson@gmail.com> wrote:

> That limit is imposed because it is the point at which the current RX
> implementation loses the queue efficiency/throughput tradeoff. You can
> run with a larger window size, but it will actually make things go
> slower.
> It was naively increasing the maximum window size to 255 that caused
> the huge performance problems in the 1.5.x series that Andrei
> highlighted at the 2010 European AFS workshop.

Yes, I know, that's what I'm talking about. Even if we didn't have that
problem, a window size of 255 is still prohibitively small for many

Andrew Deason