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Type:
Bug
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Resolution: Incomplete
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Priority:
Minor - P4
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None
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Affects Version/s: 4.4.1
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Component/s: None
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Environment:Docker containers on Ubuntu 16.04 AWS VMs
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ALL
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We upgraded 2 replica sets from 4.2.8 to 4.4.1 and saw immediate performance degradation as query times went from milliseconds to seconds
- The service that uses the upgraded DB (from 4.2.8 to 4.4.1 ) had the P50 response times increase from 3-4ms to 23 seconds.
- CPU, memory and disk metrics did on the DB server do not seem to differ
- After the upgrade we could not rollback to 4.2 and had to resync from 4.2 members that were not upgraded yet
| {"t":\{"$date":"2020-10-01T09:46:25.530+00:00"}
,"s":"I","c":"COMMAND","id":51803,"ctx":"conn323349","msg":"Slow query","attr":{"durationMillis":2045}} |
| {"t":\{"$date":"2020-10-01T09:46:25.531+00:00"}
,"s":"I","c":"COMMAND","id":51803,"ctx":"conn510525","msg":"Slow query","attr":{"durationMillis":8544}} |
| {"t":\{"$date":"2020-10-01T09:46:25.531+00:00"}
,"s":"I","c":"COMMAND","id":51803,"ctx":"conn506358","msg":"Slow query","attr":{"durationMillis":4049}} |
| {"t":\{"$date":"2020-10-01T09:46:25.531+00:00"}
,"s":"I","c":"COMMAND","id":51803,"ctx":"conn512184","msg":"Slow query","attr":{"durationMillis":1045}} |
| {"t":\{"$date":"2020-10-01T09:46:25.532+00:00"}
,"s":"W","c":"COMMAND","id":20525,"ctx":"conn506888","msg":"Failed to gather storage statistics for slow operation","attr":{"durationMillis":null}} |
| {"t":\{"$date":"2020-10-01T09:46:25.532+00:00"}
,"s":"I","c":"COMMAND","id":51803,"ctx":"conn506888","msg":"Slow query","attr":{"durationMillis":8049}} |
| {"t":\{"$date":"2020-10-01T09:46:25.532+00:00"}
,"s":"I","c":"COMMAND","id":51803,"ctx":"conn3285","msg":"Slow query","attr":{"durationMillis":1549}} |
I'll attach diagnostic.data from the runs with version 4.4.1
The client is Node.js and uses mongodb lib version 3.6.2
If you need additional info please let me know.
- is related to
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- Closed
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