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> Cable modems connect directly to an ethernet card and do not need a
> serial port. No serial port that I know of could handle the 10MbPS
> or better speed of a cable modem!
Brilliant. This brings up another crucial question with IP delivery.
I would be interested to learn whether these cable modems buffer
data and how data is buffered by the internal drivers since TS cannot
work the data at 10Mbps.
Furthermore if the data gets through it is hanging in some internal
IP queue on the IP socket. It seems to happen often that IP queues
overflow and simply do not accept more packets when they are full and
the packets are dropped. This could be even more crucial with TS
since the data has to be stored in the database and to be dispatched
to the charting application which takes time.
Is there some mechanism that re-requests packets from the tick data
server if they are lost or is this happening undetected and the data
ticks are just lost ?
Gerrit
> Cable modems connect directly to an ethernet card and do not need a serial
> port. No serial port that I know of could handle the 10MbPS or better speed
> of a cable modem!
>
> Carroll Slemaker
>
> -----Original Message-----
> From: Gerrit Jacobsen <jrt@xxxxxxxxxx>
> To: Jim Johnson <jejohn@xxxxxxxxx>; omega-list@xxxxxxxxxx
> <omega-list@xxxxxxxxxx>
> Date: Saturday, May 22, 1999 9:56 AM
> Subject: Re: PS2k SP2 Update, Tick Counts and Rant
>
>
> Jim,
>
> > 1. Will cable modems represent an improvement and elimate the need for
> > me to get a high speed port?
>
> Depends, if this an external modem it will make your need for
> high speed port even more urgent since the data has to get somehow
> into your computer. If it is an internal modem you don't need any
> port at all.
>
> > 2. What does a high speed port offer beyond my USR 56K VoiceWin modem?
>
> That you don't lose your data. The basic issue is that your
> operating system cannot poll the data as fast as necessary
> from the port. This is why the port must be able to store as much
> data as possible.
>
> > 3. I've run TRACERT but don't know what to do with the info. What can
> > you do about it if your route to the data provider's server is going
> > through Bangladesh several times?
>
> You can lease a dedicated line or get some decent satellite service.
>
> > 4. What is the "Code List" and how does one join?
>
> This is a marketing tool from Mr. Brown where users get abused for
> free by Mr. Brown in the following fashion:
>
> > thanks a bunch for your long ass post, it was certainly a total
> > frickin waste of my time to respond to such bull crap. but given
> > you may be gone soon, i wanted to spend some time with you before
> > you and the people you are trolling for blow out - mr. sentinel
> > trading ! mb
>
> See: www.markbrown.com if you don't believe it.
>
> Gerrit Jacobsen
>
>
>
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