[ntp:questions] Which version of Linux works best?
David Lord
snews at lordynet.org
Wed Mar 10 19:10:02 UTC 2010
David J Taylor wrote:
> Yes, I know it's one of those low long is a piece of string questions,
> but I'm now considering a dual-core Intel Atom system, which is
> "Compatible with Linux" according the the very minimal blurb I have
> right now. If the system is to be used purely for NTP with Linux as a
> serial-port GPS/PPS stratum-1 server (and, yes, I know dual-core isn't
> needed for that, but I might want to boot Windows-7 64-bit
> occasionally), and considering that I know very little about Linux,
> which version of Linux would the group recommend? Does it make any
> difference as far as timekeeping is concerned?
"Linux" I think is just the kernel whilst filesystem and packages
are very diverse between distributions.
If you don't already know Linux well already then I'd suggest
FreeBSD as being a more solid base than a Linux distribution.
Otherwise I favour Slackware/Centos mainly because I'm more
familiar with filesystem layout vs that of other distros such
as Ubuntu.
I have had chrony running on NetBSD but as with ntpd can't get
most recent versions to install/run. It should be ok on Linux
and probably on FreeBSD but you'd need confirmation vs refclock
drivers on FreeBSD for that.
Certainly here on NetBSD chrony looks to give offsets a third or
less than ntpd and avoids the square wave offset traces from ntpd
that result from inability to correct for temperature changes,
however I had problems with incompatibility between different
chrony versions so given up to it until I have some spare system
and time to work with.
David
>
> Two secondary questions:
> - how much better might FreeBSD be than Linux? Any actual measurements?
> - and one for Bill, how much better might chrony be than official NTP?
> Does it have a preferred Linux, or even freeBSD?
>
> The system would /not/ be in a temperature controlled environment.
>
> Thanks,
> David
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