mapleFU opened a new issue, #3058: URL: https://github.com/apache/kvrocks/issues/3058
### Search before asking - [x] I had searched in the [issues](https://github.com/apache/kvrocks/issues) and found no similar issues. ### Motivation Currently, the hardware is becoming faster and faster. `O_DIRECT` is supported by rocksdb [1], and allowed to be enabled by MyRocks and other applications. Now, for reader, there're two ways to bypass kernel buffer and user buffer: 1. `mmap`, which shares the buffer among kernel and user space 2. O_DIRECT, forcing aligned read RocksDB has limited support for `mmap`, see [2]. O_DIRECT might enhance performance, but it also has some counter parts, see [3] [1] https://github.com/facebook/rocksdb/wiki/Direct-IO [2] https://smalldatum.blogspot.com/2022/05/using-mmap-with-rocksdb.html [3] https://github.com/facebook/rocksdb/issues/6448 ### Solution The code would be easy, perhaps the most important thing is setting up benchmark on different machines ### Are you willing to submit a PR? - [x] I'm willing to submit a PR! -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
