[time-nuts] Timing performance of servers

[Edgardo Molina]

Dear Mangus,

I will allow myself to share a comment on your thread. 

Timing on windows servers is not one of their plausible strengths. It was clearly pointed out during the SIM conference last week at CENAM. In fact there was an interesting discussion about the drawbacks when using NTP Windows based servers and all kind of NTP appliances compared to full size Linux based NTP servers. The example of what NIST is using nationwide for their servers set an example of good server hardware and linux to provide the nation's NTP pulse.

I haven't done any experiments with Windows for NTP services, still it could be interesting as to set a benchmark while comparing it to the Linux boxes.

I am currently trying out the Domain Time II NTP client from Symmetricom for the thesis. I have to come back to Symmetricom's Miguel García to decide on purchasing a Domain Time II NTP client kit.  How is the Mainberg NTP client different from the Symmetricom version? Have you tried both? If not I will be more than glad to help comparing both if you can help me pointing out the source for a demo version of Mainberg's software. Maybe then an objective review of both clients will be in order, I will be more than glad to do it or to test them against Windows NTP services, appliances and/or Linux NTP boxes. I have at least an example of those at the office.

			-13
Just my  2x10	cents.


Regards to you and the group,



Edgardo Molina
Dirección IPTEL

www.iptel.net.mx

T : 55 55 55202444
M : 04455 20501854

Piensa en Bits SA de CV



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On Oct 24, 2012, at 5:47 PM, Magnus Danielson <magnus at rubidium.dyndns.org> wrote:

> Fellow time-nuts,
> 
> When spending time on a conference last week, I heard one interesting comment that they lost data due to bad timing on their Windows servers.
> 
> Now, I know that the standard Windows uses SNTP in order to achieve the goal of having the timing of the machines sufficiently aligned to allow Kerberos authentication. SNTP suffice for that, as it needs to be a handful of minutes in line.
> 
> If you need better performance than that, you should use NTP (and then download and install Meinbergs Windows-client for NTP).
> 
> Then again, I would point out that for this type of data, it would most probably be better served on a Linux box.
> 
> What should be a nice wake-up call for them would be a summation of how different strategies would give them clock precision of sufficient grade. So, does anyone know of such measurements presented anywhere?
> 
> There are bits and pieces, but the ideal for this case would be if they where collected in one page/paper.
> 
> This is an awareness thing, so that people can do a little more well-informed choices.
> 
> Cheers,
> Magnus
> 
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