> Hi,
> 
>    I'm trying to dynamically determine the tcp windowsize. Sysctl
> has the following to say, but the name/value pairs are not
> documented.
> 
> net.inet.tcp.sendspace: 16384
> net.inet.tcp.recvspace: 16384
...
>    send/recv space might be what I'm looking for...

They're the default send/receive window sizes, yes.  You can tweak them 
with socket ioctls on a per-socket basis.

>    delayed ack sounds interesting....

Turning that off disables TCP slow-start.  It's a huge performance 
booster for things like SMB service, where you have lots of short-lived 
TCP connections on a local net.

-- 
\\  The mind's the standard       \\  Mike Smith
\\  of the man.                   \\  msm...@freebsd.org
\\    -- Joseph Merrick           \\  msm...@cdrom.com




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