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Summary: Implement a benchmark for universal compaction based on the feature description (see below), in-person discussions, and reading source code: https://github.com/facebook/rocksdb/wiki/RocksDB-Tuning-Guide https://github.com/facebook/rocksdb/wiki/Universal-Compaction https://github.com/facebook/rocksdb/wiki/RocksDB-Tuning-Guide#universal-compaction Universal compaction benchmark is based on `overwrite` benchmark, adding compaction specific options to it, and executing it for different values of subcompaction to understand the impact of scaling out subcompactions for a particular scenario. Test Plan: - Execute the benchmark on various machines for multiple iterations to verify the reliability. - Observe the output to make sure that compaction is taking place. - Observe the execution to make sure that arguments passed to `db_bench` are correct. Reviewers: sdong, MarkCallaghan Reviewed By: MarkCallaghan Subscribers: dhruba, leveldb Differential Revision: https://reviews.facebook.net/D54045
RocksDB: A Persistent Key-Value Store for Flash and RAM Storage
RocksDB is developed and maintained by Facebook Database Engineering Team. It is built on earlier work on LevelDB by Sanjay Ghemawat (sanjay@google.com) and Jeff Dean (jeff@google.com)
This code is a library that forms the core building block for a fast key value server, especially suited for storing data on flash drives. It has a Log-Structured-Merge-Database (LSM) design with flexible tradeoffs between Write-Amplification-Factor (WAF), Read-Amplification-Factor (RAF) and Space-Amplification-Factor (SAF). It has multi-threaded compactions, making it specially suitable for storing multiple terabytes of data in a single database.
Start with example usage here: https://github.com/facebook/rocksdb/tree/master/examples
See the github wiki for more explanation.
The public interface is in include/. Callers should not include or
rely on the details of any other header files in this package. Those
internal APIs may be changed without warning.
Design discussions are conducted in https://www.facebook.com/groups/rocksdb.dev/