On Sep 1, 2009, at 2:54 PM, Nicolas Williams wrote:
On Tue, Sep 01, 2009 at 01:51:33PM -0400, Dan McDonald wrote:
On Tue, Sep 01, 2009 at 12:34:47PM -0500, Nicolas Williams wrote:
<SNIP!>
Well, IIRC Solaris tries to track window scale, and path MTU, in the
IRE. But how can the OS know whether an app will be doing bulk
transfers and so needs large buffers? Ideally we could make the
buffers
(and window scale) dynamic.
The scale is dynamic -- but it maxes out at 48k right now.
I was talking about the TCP window scaling option, which is not
dynamic.
Window scale is negotiated in the initial handshake and that's the
window scale that you're stuck with for the rest of the TCP
connection's
lifetime.
yep, and the window scale is negotiated to the recv window size which
is .. 48k
yes?
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