Clock tracking

Gary E. Miller gem at
Mon Mar 22 18:18:50 UTC 2021

Yo Hal!

You could try PTP.  The linuxptp project is active.  With ethernet cards
that support hardware time stamps you can get 1 micro second offsets, maybe
a lot better.

On Mon, 22 Mar 2021 11:13:11 -0700
Hal Murray via devel <devel at> wrote:

> Suppose I want to compare log file on several systems.  Assume they
> are all on the same Ethernet switch.  I'd like the clocks to track --
> I don't care (much) how accurate they are as long as they all have
> the same offset/error.
> Has anybody worked on this area?  (Is it simple enough not to require
> "work"?)
> What sort of accuracy can I get?  Anybody have data or a HOWTO?

Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703
	gem at  Tel:+1 541 382 8588

	    Veritas liberabit vos. -- Quid est veritas?
    "If you can't measure it, you can't improve it." - Lord Kelvin
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