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Timing issue in Jormungandr for slot leader signing blocks #1143

rickymac68 opened this issue Nov 17, 2019 · 2 comments · Fixed by #1151

Timing issue in Jormungandr for slot leader signing blocks #1143

rickymac68 opened this issue Nov 17, 2019 · 2 comments · Fixed by #1151


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@rickymac68 rickymac68 commented Nov 17, 2019



Describe the bug
My node timing is correct as verified by 3 different time sources and automatic time sync is turned on. When my node is supposed to sign a block I intermittently get this error in the log:
Nov 16 13:46:36.917 ERRO Eek... we missed an event schedule, system time might be off?, event_end: 2019-11-16T18:46:39+00:00, event_start: 2019-11-16T18:46:37+00:00, event_date: 12.1468, leader_id: 1, task: leadership

The problem may be more obvious when delegated stake %, but a detailed look into the problem shows it is more likely related to time. "Missed the deadline to compute the schedule" shows up in the leader logs. However a closer look at some of the time shows the system clock was 1 second ahead of what the protocol is expecting. Screen cap for Epoch 18 has red dots showing the discrepancy. The problem of blocks not being signed in time shows up between blocks that were signed correctly so that tells me system time is good in addition to my manual comparisons to 3 other time sources.

Mandatory Information

  1. jcli --full-version output;
    jcli 0.7.0 (HEAD-a93d4f67, release, macos [x86_64]) - [rustc 1.39.0 (4560ea788 2019-11-04)]
  2. jormungandr --full-version output;
    jormungandr 0.7.0 (HEAD-a93d4f67, release, macos [x86_64]) - [rustc 1.39.0 (4560ea788 2019-11-04)]

To Reproduce
Steps to reproduce the behavior:

  1. Operate Jormungandr on the nightly test net.
  2. Have a low % stake <1% to make more obvious
  3. jcli rest v0 leaders logs get -h
  4. See error

Expected behavior
Blocks get signed correctly.

Additional context
Using Mac OSX Catalina 10.15.1 on a Mac Pro server with auto time sync turned on.
Logs and screen captures attached. Log and screen cap for Epoch 18 when stake % is higher. Screen caps from previous epochs when stake was less than 1%



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@maneav maneav commented Nov 17, 2019

@NicolasDP NicolasDP self-assigned this Nov 18, 2019
NicolasDP added a commit that referenced this issue Nov 18, 2019
fix #1143

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@rickymac68 rickymac68 commented Nov 23, 2019

Looks like this issue is resolved. Text logs are attached. Thank you!

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