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Entry  Thu Mar 11 14:27:56 2021, gautam, Update, CDS, timesync issue? timesync.pngc1lscMods.png
    Reply  Thu Mar 11 18:46:06 2021, gautam, Update, CDS, cds reboot CDSoverview.png
       Reply  Fri Mar 12 03:28:51 2021, Koji, Update, CDS, cds reboot 
          Reply  Fri Mar 12 11:02:38 2021, gautam, Update, CDS, cds reboot timeDrift.png
Message ID: 15910     Entry time: Fri Mar 12 03:28:51 2021     In reply to: 15905     Reply to this: 15911
Author: Koji 
Type: Update 
Category: CDS 
Subject: cds reboot 

I want to emphasize the followings:

  • FB's RTC (real-time clock/motherboard clock) is synchronized to NTP time.
  • The other RT machines are not synchronized to NTP time.
  • My speculation is that the RT machine timestamp is produced from the local RT machine time because there is no IRIG-B signal provided. -> If the RTC is more than 1 sec off from the FB time, the timestamp inconsistency occurs. Then it induces "DC" error.
  • For now, we have to use "date" command to match the local RTC time to the FB's time.
     
  • So: If NTP synchronization is properly implemented for the RT machines, we will be free from this silly manual time adjustment.

 

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