Silly me. I didn't mean "turns" alone, but also intended to include the number
of
state "transitions" (e-o, o-e, e-e, etc.) in my preceding reply, as well.
Frank A. Coluccio
DTI Consulting Inc.
212-587-8150 Office
347-526-6788 Mobile
On Sun Mar 30 16:47 , Frank Coluccio sent:
>Mikael, I see y
Mikael, I see your points more clearly now in respect to the number of turns
affecting latency. In analyzing this further, however, it becomes apparent that
the collapsed backbone regimen may, in many scenarios offer far fewer
opportunities for turns, and more occasions for others.
To the former
On 30 Mar 2008 21:00:25 +
Paul Vixie <[EMAIL PROTECTED]> wrote:
>
> [EMAIL PROTECTED] ("Buhrmaster, Gary") writes:
>
> > > ... feed "tcp throughput equation" into your favorite search
> > > engine for a lot more references.=20
> >
> > There has been a lot of work in some OS stacks
> > (Vis
[EMAIL PROTECTED] ("Buhrmaster, Gary") writes:
> > ... feed "tcp throughput equation" into your favorite search
> > engine for a lot more references.=20
>
> There has been a lot of work in some OS stacks
> (Vista and recent linux kernels) to enable TCP
> auto-tuning (of one form or another), ...
> ... feed "tcp throughput equation" into your favorite search
> engine for a lot more references.
There has been a lot of work in some OS stacks
(Vista and recent linux kernels) to enable TCP
auto-tuning (of one form or another), which is
attempting to hide some of the worst of the TCP
uglyn
On Behalf Of
> Mikael Abrahamsson
> Sent: Sunday, March 30, 2008 12:30 PM
> To: nanog@merit.edu
> Subject: RE: latency (was: RE: cooling door)
>
>
> On Sun, 30 Mar 2008, Fred Reimer wrote:
>
> > application to take advantage of the networks' capabilities. Mikael
>
On Sun, 30 Mar 2008 13:03:18 +0800
Adrian Chadd <[EMAIL PROTECTED]> wrote:
> Oh, and kernel hz tickers can have similar effects on network
> traffic, if the application does dumb stuff. If you're (un)lucky then
> you may see 1 or 2ms of delay between packet input and scheduling
> processing. Thi
On Sun, 30 Mar 2008, Fred Reimer wrote:
application to take advantage of the networks' capabilities. Mikael (seems
to) complain that developers have to put latency inducing applications into
the development environment. I'd say that those developers are some of the
few who actually have a cl
> -Original Message-
> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of
> Paul Vixie
> Sent: Sunday, March 30, 2008 10:35 AM
> To: nanog@merit.edu
> Subject: Re: latency (was: RE: cooling door)
>
>
> [EMAIL PROTECTED] (Mikael Abrahamsson) writes
[EMAIL PROTECTED] (Mikael Abrahamsson) writes:
> ...
> Back in the 10 megabit/s days, there were switches that did cut-through,
> ie if the output port was not being used the instant the packet came in,
> it could start to send out the packet on the outgoing port before it was
> completely tak
On Sat, 29 Mar 2008, Frank Coluccio wrote:
Understandably, some applications fall into a class that requires very-short
distances for the reasons you cite, although I'm still not comfortable with the
setup you've outlined. Why, for example, are you showing two Ethernet switches
for the fiber op
Understandably, some applications fall into a class that requires very-short
distances for the reasons you cite, although I'm still not comfortable with the
setup you've outlined. Why, for example, are you showing two Ethernet switches
for the fiber option (which would naturally double the switch-
On Sun, Mar 30, 2008, Mikael Abrahamsson wrote:
>
> On Sat, 29 Mar 2008, Frank Coluccio wrote:
>
> >Please clarify. To which network element are you referring in connection
> >with
> >extended lookup times? Is it the collapsed optical backbone switch, or the
> >upstream L3 element, or perhaps b
On Sat, 29 Mar 2008, Frank Coluccio wrote:
Please clarify. To which network element are you referring in connection with
extended lookup times? Is it the collapsed optical backbone switch, or the
upstream L3 element, or perhaps both?
I am talking about the matter that the following topology:
Please clarify. To which network element are you referring in connection with
extended lookup times? Is it the collapsed optical backbone switch, or the
upstream L3 element, or perhaps both?
Certainly, some applications will demand far less latency than others. Gamers
and
some financial (program
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