Just a note re time sync standards:
In my previous job, we had been playing with the TSN standards, trying to
achieve synchronization in the 10s of microseconds
realm. The specific TSN standard (802.1AS) is a specific PTP profile (more
or less 1588 v3, if I remember correctly).
To achieve sub-millisecond accuracy one should better have hardware
timestamping, but we did achieve very good
results with just software times.
Ronen
On Thu, Jan 9, 2020 at 5:09 PM Brett Niver <bniver(a)redhat.com> wrote:
I played with vectorial clocks 10-15 years ago. I
think in 4) you have a
typo, casual should be causal, right? I really like Lamport clocks
conceptually, I personally found implementing based on that concept to have
more corner cases than I liked but that could have been just me.
What are your time sync requirements with respect to NTP? Aren't there
better algorithms out today?
On Wed, Jan 8, 2020 at 10:43 PM Xuehan Xu <xxhdx1985126(a)gmail.com> wrote:
> On Thu, 9 Jan 2020 at 02:45, Matt Benjamin <mbenjami(a)redhat.com> wrote:
> >
> >Historically, and the discussion has been about the perf. and complexity
> trade-offs, I think.
>
> Thanks for reviewing, Matt, I totally agree:-)
>
> >
> > Matt
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