Re: Talk at Stanford: Nanosecond-level Clock Synchronization in a Data Center

2019-05-17 Thread Gary E. Miller via devel
Yo Achim! On Fri, 17 May 2019 20:53:58 +0200 Achim Gratz via devel wrote: > Hal Murray via devel writes: > >> I'm not going to look at that stuff on YouTube… any link to > >> oldfashioned non-multimedia? > > > > Here is a Usenix paper that covers the same ground: > >

Re: Talk at Stanford: Nanosecond-level Clock Synchronization in a Data Center

2019-05-17 Thread Achim Gratz via devel
Hal Murray via devel writes: >> I'm not going to look at that stuff on YouTube… any link to oldfashioned >> non-multimedia? > > Here is a Usenix paper that covers the same ground: > https://www.usenix.org/system/files/conference/nsdi18/nsdi18-geng.pdf Ah, OK; the Huygens folks again. That

Re: Talk at Stanford: Nanosecond-level Clock Synchronization in a Data Center

2019-05-13 Thread Hal Murray via devel
> I'm not going to look at that stuff on YouTube… any link to oldfashioned > non-multimedia? Here is a Usenix paper that covers the same ground: https://www.usenix.org/system/files/conference/nsdi18/nsdi18-geng.pdf The interesting graphs are on page 7 (86). -- These are my opinions. I

Re: Talk at Stanford: Nanosecond-level Clock Synchronization in a Data Center

2019-05-13 Thread Achim Gratz via devel
Hal Murray via devel writes: > One is the use the PTP style time-stamping available on many modern Ethernet > interfaces. Does anybody know how that works? API? I assume there is a > counter in the Ethernet hardware. How does that counter get converted into a > time stamp? Yes, it's a

Talk at Stanford: Nanosecond-level Clock Synchronization in a Data Center

2019-05-13 Thread Hal Murray via devel
https://www.youtube.com/watch?v=Opf9CBwP5R8 Several ideas. One is the use the PTP style time-stamping available on many modern Ethernet interfaces. Does anybody know how that works? API? I assume there is a counter in the Ethernet hardware. How does that counter get converted into a