Re: compilation error clockspeed

Hi ,
For a while, I have fixed my problem by using one more
pc and making it to do dnating. So Now I am sending
and receiving my traffic from same pc.I am planning to
write a mini how to on this, I will post that on this
mailing list when I am done.
Thank you all for your great support.
Nitin

--- Richard Thomas <[email protected]>
wrote:
> On Nov 20,  5:40pm, Greg Black wrote:
> 
> > | Can I get sync up to milli second level.Or what
> is the
> > | best I can get with either of these.
> > 
> > Realistically, you can expect to get within two or
> three tens of
> > milliseconds with either.  If you happen to have
> good hardware
> > clocks (rare with PC systems) and if you happen to
> have a good
> > fast link to your nearest stratum 2 NTP server,
> you might be
> > able to get down to a few milliseconds.
> 
> 
> This squares with my experience, as well.
> 
> 
> > 
> > | > If you are
> > | > serious about this, you'll need to look
> elsewhere.
> > | 
> > | Can you suggest me what can be elsewhere.
> > 
> > As always, google is your friend.  But you need to
> believe me
> > when I say that it won't be at all easy.
> 
> It can be reasonably easy.  But it won't be cheap.
> And you'll need at
> least a little hardware expertise.  You'll need a
> time source with a
> TTL "pulse-per-second" (PPS) output.  Many GPS
> receivers have this.
> Connect the PPS to the serial or parallel ports of
> all the machines
> that you need to have synched to sub-millisecond
> level.  Run ntpd
> appropriately configured to treat the PPS as a
> stratum 0 source.  If
> your machines are in different locations (more than
> a few hundred
> meters apart) you will need one GPS receiver per
> location.  Then all
> of your machines will have the same system time to
> within a few
> hundred microseconds.
> 
> Alternatively, if you have _lots_ of money, and your
> need is genuinely
> for microsecond level synchronization, go talk to
> the folks at Datum
> (www.datum.com).  They will be happy to sell you
> some PCI cards that
> do precision time-stamping and sync to GPS
> satellites.  You will
> probably have to write a Linux driver for the card,
> and an ntpd driver
> to talk to the Linux driver.
> 
> 
> 
> > 
> > Greg
> >-- End of excerpt from Greg Black
> 
> 
> Rick


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