9bb13c56b3
Summary: This makes it easier to debug with tools like `ps`. The change only applies to builds with glibc 2.30+ and _GNU_SOURCE extensions enabled. We could adopt it in more cases by using the syscall but this is enough for our build. Replaces https://github.com/facebook/rocksdb/issues/2973. Pull Request resolved: https://github.com/facebook/rocksdb/pull/9164 Test Plan: - ran some benchmarks and correlated logged thread IDs with those shown by `ps -L`. - verified no noticeable regression in throughput for log heavy (more than 700k log lines and over 5k / second) scenario. Benchmark command: ``` $ TEST_TMPDIR=/dev/shm ./db_bench -benchmarks=filluniquerandom -compression_type=none -max_bytes_for_level_multiplier=2 -write_buffer_size=262144 -num_levels=7 -max_bytes_for_level_base=2097152 -target_file_size_base=524288 -level_compaction_dynamic_level_bytes=true -max_background_jobs=12 -num=20000000 ``` Results before: 15.9MB/s, 15.8MB/s, 16.0MB/s Results after: 16.3MB/s, 16.3MB/s, 15.8MB/s - Rely on CI to test the fallback behavior Reviewed By: riversand963 Differential Revision: D32399660 Pulled By: ajkr fbshipit-source-id: c24d44fdf7782faa616ef0a0964eaca3539d9c24
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 especially suitable for storing multiple terabytes of data in a single database.
Start with example usage here: https://github.com/facebook/rocksdb/tree/main/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/ and https://rocksdb.slack.com/
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.