weird result of funcslower.py and funclatency.py
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Description
# In the environment of centos7.6
I used the BCC tool to check the delay of do_fsync, but I found a lot of outliers, it felt like the program overflowed.
We are using pg_test_fsync to simulate system stress
Then I saw this weird error
We thought it was a problem with funcslower.py
Just replaced it with funclantency.py
But the problem remains
Does anyone know if this is a bug in the program?
Thanks！
Contributor guide
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Research direction
Start by reproducing the reported outliers with funcslower.py and funclatency.py on CentOS 7.6 while running pg_test_fsync, using the two attached screenshots as the observed behavior. No source file or test is named; done means determining whether the measurements reflect a program bug and documenting a reproducible result or diagnosis.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- centos, postgresql, python
- Domain
- observability-sre, operating-systems, performance
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 25/100