[GitHub] [rocketmq] hdr893487191 opened a new issue #2701: why does rocketmq uses mmap+write , rather then sendfile

[GitBox <gi...@apache.org>]

hdr893487191 opened a new issue #2701:
URL: https://github.com/apache/rocketmq/issues/2701


   I looked up some information and didn't understand why.


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[GitHub] [rocketmq] hdr893487191 closed issue #2701: why does rocketmq uses mmap+write , rather then sendfile

[GitBox <gi...@apache.org>]

hdr893487191 closed issue #2701:
URL: https://github.com/apache/rocketmq/issues/2701


   


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[GitHub] [rocketmq] fengyiluo commented on issue #2701: why does rocketmq uses mmap+write , rather then sendfile

[GitBox <gi...@apache.org>]

fengyiluo commented on issue #2701:
URL: https://github.com/apache/rocketmq/issues/2701#issuecomment-787825837


   Compared with the large  file transmission of sendfile, the small data transmission of mmap is more suitable for rocketmq. On the other hand, rocketmq is developed in java, large objects will have a certain impact on the garbage collection mechanism of jvm, so mmap is chosen


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