tglassey wrote: > G8KBV wrote: >> Wonder if this will get posed, or returned to me.. >> >> Hi... >> >> Been lurking for a while. >> >> Also, been messing about trying to get a local (to me) GPS >> Disciplined NTP server working, based on David Taylor's work >> with FreeBSD, > Yes this is a good place to start. >> I think I have one of those configured OK, but >> I've got other issues with FreeBSD on that machine that sort >> of prevent me using it for unattended "appliance" use. It >> keeps generating system emails for the Root user, and I can't >> find out why! Other than its something about recovered editor >> files? >> > There is a process called virecover which starts from boot - you can > disable it. Look in /etc/rc.d/virecover. In fact /etc/rc.d is the > directory with many of the start/stop rc (*scripts) files. But you > could have found this by simply typing a google search for "stopping > virecover" for what its worth. >> So... I'm about to try a couple of Windows "solutions" >> (opportunities) One the "Tardis" program, that would appear >> to be able to take PPS based GPS signals, and act as a server. >> > Its not NTP - but rather SNTP as I recall. What are you trying to > accomplish? using a non-evidentiary grade of time services or putting > together provable time services for your system? >> Have to say, if it works, that would be a good solution for >> some other interested parties (near zero config!) > Except the reason for setting the time data on the system is so that > the log files can be properly compared to the real world and that the > time-sensitve crypto features of Kerberos and other tools work >> The author >> of that app seems to think it should work (they would I >> guess?) Plus, I know my way around most of Windoze, unlike >> my knowledge of Linuz/BSD or whatever, that just slows me down >> to the point of frustration. No one in the (local to me) LUG >> is interested in any of this sort of thing sadly. >> >> (& just why is it that about all 'nix documentation and help >> files, are written almost exclusively to obfuscate the needed >> information?) >> >> Also the Meinberg NTP software (not looked at in detail yet) >> Both of them (independently while I play with them) will each >> live on a dedicated PC for now, but ultimately one or the >> other would need to co-exist on the same PC with the >> monitoring program (Faros) that needs the time stamps. >> Pointing it's NTP client routines at LocalHost? Low single >> figure mS jitter is OK, sub uS accuracy is just not needed. >> >> However, while involved in something else, this came to my >> attention.... >> >> http://bifferos.bizhat.com/ >> >> Now, I realise the clock speed is not that quick by modern >> standards, but could that have enough "grunt" to work as a >> GPSDNTP server for a small low traffic LAN?.. >> >> OK, I've managed (I think, as earlier) to get an older version >> of FreeBSD to run for this sort of thing (on a 500MHz P3 >> machine) But, just how cut down can it go, with just enough >> left to boot and do the NTP task, or is the Kernel BifferOS >> uses capable of half decent NPT serving tasks as it is? It >> appears to use a version of the same code others are using in >> the WRTG routers for other purposes. >> >> Or, has anyone done similar with "re-purposed" Router hardware >> for example (Linksys, Sweex, etc) I am aware of someone >> selling (too rich for me!) a GPSDNTP server based on a "Slug" >> (eBay 180384450442) using a USB connected GPS. >> >> My ultimate goal? >> >> To get Faros (HF Beacon monitoring program, runs on Windows, >> only.) A GPSDNTP source, HF Receiver control app (my own >> code) and the resulting web based status page (or website >> updater) all living on the same PC. I may have a 1GHz P3 >> available, if I can get replacement RAM for it. With Win2k >> already resident. And a couple of Garmin GPS16LVS devices, >> verified working with 1PPS output. >> >> Now, if Alex would integrate GPS timekeeping within Faros, all >> this would not be needed, but he has his own reasons it seems >> for not doing so. As a result, it needs a 24/7 'net >> connection, or access to some other NTP time source. My >> ISP's servers are somewhat less than reliable at times, >> likewise access to others due to unpredictable and huge WAN >> network latencies from time to time. >> >> I also can't help wondering if any of the modern single chip >> microcontrollers, some of which have available IP stacks, >> could do the GPSDNTP thing in raw machine (or compiled) code. >> But try as I might, I can find no reference to anyone trying >> such a thing. >> >> I am of course trying to keep the electric bill down, running >> 3 PC's and a radio or two 24/7 is somewhat noticeable to the >> wallet these days, and it is not getting any easier!... >> >> Then there is the chore of just finding the time to research >> and mess with all this stuff... >> >> Enough waffle from me... >> >> Regards to All.. >> >> Dave Baxter. >> G0WBX. >> >> _______________________________________________ >> questions mailing list >> questions@lists.ntp.org >> https://lists.ntp.org/mailman/listinfo/questions >> ------------------------------------------------------------------------ >> >> >> No virus found in this incoming message. >> Checked by AVG - www.avg.com Version: 8.5.392 / Virus Database: >> 270.13.23/2254 - Release Date: 07/22/09 05:59:00 >> >> > >
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