[SERVER-53443] ResourceConsumptionMetricsTest busy waits based on discontinuous system time Created: 18/Dec/20  Updated: 29/Oct/23  Resolved: 19/Dec/20

Status: Closed
Project: Core Server
Component/s: None
Affects Version/s: None
Fix Version/s: 4.9.0

Type: Bug Priority: Major - P3
Reporter: Louis Williams Assignee: Louis Williams
Resolution: Fixed Votes: 0
Labels: None
Remaining Estimate: Not Specified
Time Spent: Not Specified
Original Estimate: Not Specified

Issue Links:
Depends
Backwards Compatibility: Fully Compatible
Operating System: ALL
Sprint: Execution Team 2020-12-28
Participants:
Linked BF Score: 0

 Description   

The spinFor helper could be subject to time discontinuities and not perform any significant work.

I'm not sure if that could result in measuring 0 elapsed time in nanoseconds, but I want to rule that out as an option.

Do something similar to the OperationCpuTimerTest that sleeps on a different thread and busy waits for it to complete.



 Comments   
Comment by Ian Whalen (Inactive) [ 04/Jan/21 ]

Author:

{'username': u'evrg-bot-webhook', 'name': u'Louis Williams', 'email': u'louis.williams@mongodb.com'}

Message:SERVER-53443 Busy wait in ResourceConsumptionMetricsTest should not depend on system clock
Branch:master
https://github.com/mongodb/mongo/commit/49b56d28633d5fbfb090ed91e90b9c975ba61190

Comment by Louis Williams [ 19/Dec/20 ]

https://github.com/mongodb/mongo/commit/49b56d28633d5fbfb090ed91e90b9c975ba61190

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