franz1981 commented on pull request #3566:
URL: https://github.com/apache/activemq-artemis/pull/3566#issuecomment-833839211


   Tests has shown something interesting:
   
![image](https://user-images.githubusercontent.com/13125299/117361311-2aca8e80-aeba-11eb-83fd-9000719ba939.png)
   In violet there are calls to `FileChannel::write` due to 
`handlePageWriteEvent` and `FileChannelImpl::force` due to `handlePageEvent`. 
The latter doesn't seem right, considered what we deliver with common journal 
writes ie writes are performed in async and we send response back before 
hitting the journal. @clebertsuconic wdyt?
   I'm thinking to save `fdatasync` due to paging to happen in the Netty event 
loop....
   
   


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