Re: Makefile timestamp synchronization problem

[Andi Kleen <ak at muc dot de>]

Joel Sherrill <joel@OARcorp.com> writes:

> On Fri, 24 Jul 1998, Jeffrey A Law wrote:
> 
> > You're not missing anything.
> 
> :(
> 
> > He's basically hosed.  This is precisely why every machine should be
> > running some kind of time sync daemon (xntp for example).  Of course
> > I've been too lazy to do this on my machines, so I hit the same problem
> > on occasion.
> 
> That's what I thought.  
> 
> > Usually a few well placed touch commands will clear up the problem for
> > any given build cycle.  Of course when they update the sources they'll
> > probably need a few more well placed touch commands.
> 
> I can see why this would work but I don't want to get involved in trying
> this one.  It is a nightmare. 
> 
> > ps.  I'm just assuming xntp is still the time sync daemon of choice;
> > it's been about 10 years since I worked on network time protocols.  Long
> > live the fuzzballs!
> 
> Looks like it still is.  See http://www.eecis.udel.edu/~ntp/
> 
> When I searched the Linux SW Map, that was the only hit on "time
> synchronization".

There is another NTP daemon called 'chrony', which uses a bit less 
resources, but it is very new. I think xntpd is still the standard solution.

Also DCE contains its own time service AFAIK, for people who prefer to use
'commercially supported' solutions.

-Andi