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Posted to notifications@skywalking.apache.org by GitBox <gi...@apache.org> on 2021/03/29 06:28:11 UTC

[GitHub] [skywalking] xuanyu66 opened a new issue #6639: PersistenceTimer Performance cause full GC frequent

xuanyu66 opened a new issue #6639:
URL: https://github.com/apache/skywalking/issues/6639


   Please answer these questions before submitting your issue.
   
   - Why do you submit this issue?
   - [ ] Question or discussion
   - [ ] Bug
   - [ ] Requirement
   - [X] Feature or performance improvement
   
   ___
   ### Requirement or improvement
   - We face full gc issue lately，I dump the heap and found that PersistenceTimer occupied most of heap memory
   ![image](https://user-images.githubusercontent.com/17768378/112794457-7a3ac500-9099-11eb-8414-24ade8a38c22.png)
   - I looked into code, found that PersistenceTimer use one thread persistence Metrics synchronously and periodically（5s）
   - When peak traffic arrives, persistence time explode sharply and next persistence will delay (scheduleWithFixedDelay), which cause Metrics increase next time. It is vicious circle.
   ![image](https://user-images.githubusercontent.com/17768378/112795248-d6eaaf80-909a-11eb-94bf-91bca1fc07ad.png)
   - I want to konw, why metrics need to persist synchronously, can we just persist like record
   


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[GitHub] [skywalking] wu-sheng closed issue #6639: PersistenceTimer Performance cause full GC frequent

Posted by GitBox <gi...@apache.org>.
wu-sheng closed issue #6639:
URL: https://github.com/apache/skywalking/issues/6639


   


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[GitHub] [skywalking] wu-sheng commented on issue #6639: PersistenceTimer Performance cause full GC frequent

Posted by GitBox <gi...@apache.org>.
wu-sheng commented on issue #6639:
URL: https://github.com/apache/skywalking/issues/6639#issuecomment-809109128


   Read #6472 


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