The Raspberry Pi as a Stratum-1 NTP Server • Hacker News Board

Re: The Raspberry Pi as a Stratum-1 NTP Server

#21

Post by gsich » Mon, Aug 27, 2018, 11:08 AM UTC

Are there performance differences regarding Pi 1/2/3?

Re: The Raspberry Pi as a Stratum-1 NTP Server

#22

Post by abraham_lincoln » Mon, Aug 27, 2018, 11:29 AM UTC

gsich wrote: post #21

Are there performance differences regarding Pi 1/2/3?

Yes, very much so.

Re: The Raspberry Pi as a Stratum-1 NTP Server

#23

Post by Piskvorrr » Mon, Aug 27, 2018, 11:55 AM UTC

bigiain wrote: post #11

steve19 wrote: post #7

Earlier quoted context omitted.

I wonder how much the rpi foundation would need to sell a pi if it included 32gb of storage. I would gladly pay not to feel like I'm playing roulette with my microsd.

How much more are you prepred to pay? This is a big jump up price-wise on the 'Pi, but it meets your "32gb of storage" requirement for $174: https://shop.udoo.org/other/home/udoo-x86-advanced-plus.html

Pretty sure you're also paying more for x86 (as compared to ARM).

Re: The Raspberry Pi as a Stratum-1 NTP Server

#24

Post by gsich » Mon, Aug 27, 2018, 12:00 PM UTC

abraham_lincoln wrote: post #22

gsich wrote: post #21

Are there performance differences regarding Pi 1/2/3?

Yes, very much so.

Do you have some numbers?

Re: The Raspberry Pi as a Stratum-1 NTP Server

#25

Post by TheRealDunkirk » Mon, Aug 27, 2018, 12:06 PM UTC

jwildeboer wrote: post #12

Maybe add [2012] to the title, dear mods?

And maybe a trigger warning about the FrontPage 97 theme...

Re: The Raspberry Pi as a Stratum-1 NTP Server

#26

Post by mwambua » Mon, Aug 27, 2018, 12:23 PM UTC

gsich wrote: post #24

abraham_lincoln wrote: post #22

Earlier quoted context omitted.

Yes, very much so.

Do you have some numbers?

The biggest factor is that each generation of the Pi has gotten a better processor (700Mhz single-core in the original Pi to a 1.4Ghz quad-core in the 3B+). There are also a number of detailed benchmarks out there if you bother to Google it.

Re: The Raspberry Pi as a Stratum-1 NTP Server

#27

Post by skykooler » Mon, Aug 27, 2018, 1:50 PM UTC

What is the use case for microsecond-accurate timekeeping?

Re: The Raspberry Pi as a Stratum-1 NTP Server

#28

Post by onemoresoop » Mon, Aug 27, 2018, 1:56 PM UTC

skykooler wrote: post #27

What is the use case for microsecond-accurate timekeeping?

it's mostly about synchronization between systems

Re: The Raspberry Pi as a Stratum-1 NTP Server

#29

Post by cremp » Mon, Aug 27, 2018, 2:08 PM UTC

> Configuring Wi-Fi

That alone will negate any benefit of running a stratum 1. You lose the precision and accuracy over wifi. Jitter on intranet with the pi as a timesource would be magnitudes greater than the GPS link.

Re: The Raspberry Pi as a Stratum-1 NTP Server

#30

Post by cremp » Mon, Aug 27, 2018, 2:10 PM UTC

skykooler wrote: post #27

What is the use case for microsecond-accurate timekeeping?

I've done it; and my primary argument to family and friends is time attack vectors.

The real reason though, is because I can, and I like saying my computers are more accurate and precise than their phones.