[GitHub] Ah39 edited a comment on issue #575: while not use FileChannel.write()? rocketmq use mmap file write , may cause use a lot of share memory

Tue, 04 Dec 2018 02:46:10 -0800 

Ah39 edited a comment on issue #575: while not use FileChannel.write()? 
rocketmq use mmap file write , may cause use a lot of share memory 
URL: https://github.com/apache/rocketmq/issues/575#issuecomment-444055666
 
 
   **MaxDirectMemorySize dont work for memory hold by mmap file .SHR memory is 
equals the mmap file size .**
   
   
![image](https://user-images.githubusercontent.com/2367243/49436622-86c5f000-f7f4-11e8-88ce-332e7483bc24.png)
   
![image](https://user-images.githubusercontent.com/2367243/49436639-8c233a80-f7f4-11e8-935f-bc823e7e852a.png)
   

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