a2de8e52bb
Summary: It called the autovector::push_back simply in autovector::emplace_back. This was not efficient, and then optimazed this function through the perfect forwarding. This was the src and result of the benchmark(using the google'benchmark library, the type of elem in autovector was std::string, and call emplace_back with the "char *" type): https://gist.github.com/monadbobo/93448b89a42737b08cbada81de75c5cd PS: The benchmark's result of previous PR was not accurate, and so I update the test case and result. Pull Request resolved: https://github.com/facebook/rocksdb/pull/4606 Differential Revision: D13046813 Pulled By: sagar0 fbshipit-source-id: 19cde1bcadafe899aa454b703acb35737a1cc02d
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/
License
RocksDB is dual-licensed under both the GPLv2 (found in the COPYING file in the root directory) and Apache 2.0 License (found in the LICENSE.Apache file in the root directory). You may select, at your option, one of the above-listed licenses.