...1588v2..
On Thu, Jan 9, 2020 at 7:36 PM Ronen Friedman <rfriedma(a)redhat.com> wrote:
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
>> _______________________________________________
>> Dev mailing list -- dev(a)ceph.io
>> To unsubscribe send an email to dev-leave(a)ceph.io
>>
>>