Skip site navigation (1)Skip section navigation (2)
Date:      Thu, 6 Feb 2003 08:24:40 +0100
From:      Wilko Bulte <wkb@freebie.xs4all.nl>
To:        Peter Wemm <peter@wemm.org>
Cc:        Eric Anholt <anholt@FreeBSD.ORG>, all-committers@FreeBSD.ORG, legacy-committers@FreeBSD.ORG, cvs-all@FreeBSD.ORG
Subject:   Re: cvs commit: CVSROOT access access.master access.ports
Message-ID:  <20030206082440.A20206@freebie.xs4all.nl>
In-Reply-To: <20030205233916.6156C2A89E@canning.wemm.org>; from peter@wemm.org on Wed, Feb 05, 2003 at 03:39:16PM -0800
References:  <200302052330.h15NUltB062332@repoman.freebsd.org> <20030205233916.6156C2A89E@canning.wemm.org>

next in thread | previous in thread | raw e-mail | index | archive | help
On Wed, Feb 05, 2003 at 03:39:16PM -0800, Peter Wemm wrote:
> Eric Anholt wrote:
> > anholt      2003/02/05 15:30:46 PST
> > 
> >   Modified files:
> >     .                    access access.master access.ports 
> >   Log:
> >   Successfully win the race against other commiters while on a link with >1 s
>     econd
> >   latency and 30% packet loss.  Add myself as a ports and src committer.
> 
> By the way, did you know our tcp stack actually works with 15 second
> round-trip latency?  It is rather unpleasant to try and do something
> interactively over though.  It is amazing what pathological things you
> can do with dummynet and a large buffer, plus buffering in natd, plus
> buffering in userland ppp, plus a flakey modem link that kept retraining.
> 
> And to think that I thought 2500ms (2.5 seconds) was painful (I worked on
> freebsd with between 400 and 2500ms latency for years).

Fun..

The worst thing I ever did was setup a Fibrechannel-over-IP
link between .nl and Sydney. Latencies up to 1100 ms made the whole
thing, from the FC perspective, umm, interesting to watch. Not useful,
but interesting to see.

Wilko

NB: oh, I forgot the 1% packetloss, really helps for FC ;)

-- 
|   / o / /_  _   		wilko@FreeBSD.org
|/|/ / / /(  (_)  Bulte				

To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe cvs-all" in the body of the message




Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20030206082440.A20206>