[63221] in North American Network Operators' Group
Re: Adjusting TCP windows on production systems?
daemon@ATHENA.MIT.EDU (Rob Thomas)
Tue Sep 30 18:09:42 2003
Date: Tue, 30 Sep 2003 17:06:20 -0500 (CDT)
From: Rob Thomas <robt@cymru.com>
To: "Temkin, David" <temkin@sig.com>
Cc: nanog@merit.edu
In-Reply-To: <DDE1D547D9B5B741A47D7354A5FFF4B701F50A1F@msgbal509.ds.susq.com>
Errors-To: owner-nanog-outgoing@merit.edu
Hi, Dave.
] Is there anyone in a production environment who, as part of their system
] build process, adjusts the TCP receive window/MSS/etc. on production
] systems?
Increasing it helps, particularly if both ends have the same
setting. Don't forget to enable both RFC1323 and RFC2018 support
if you go beyond the 64K mark. Take a look here for some
(slightly dated *sigh*) suggestions along these lines.
<http://www.cymru.com/Documents/ip-stack-tuning.html>
As with anything, don't simply "crank it up to 11" because it can
be done. Plan, tune, measure, repeat. :)
Thanks,
Rob.
--
Rob Thomas
http://www.cymru.com
ASSERT(coffee != empty);
