Re: [PATCH] tcp: Implement a two-level initial RTO as per draft RFC 2988bis-02.

On Thu, May 19, 2011 at 9:55 AM, Alexander Zimmermann
[off-list ref] wrote:

Exactly. This is the point. It's *your* environment. However, TCP is
general purpose. And for the wider internet 1s is know to be save. See the
measurements in the draft that Mark Allman run.

That's right, there's no one-size-fits-all solution.  That's why I'm
in favor of keeping a reasonably conservative default (say 1s to 3s,
so we don't break the Internets) and giving people a knob to adjust it
to whatever makes sense for them.

Looking through the kernel, I see that SCTP already has knobs for
this: sctp_rto_initial, sctp_rto_min, sctp_rto_max.  You can even
control the constants used to update rttvar and srtt: sctp_rto_alpha,
sctp_rto_beta

-- 
Benoit "tsuna" Sigoure
Software Engineer @ www.StumbleUpon.com