41849210e9
Summary: Fix compatibility with transparent huge pages by allocating in increments (1MiB) smaller than the typical smallest huge page size of 2MiB. Also, bypass the test when jemalloc config.fill is used, which means the allocator is explicitly configured to write to memory before we get it, which is not what this test expects. Fixes https://github.com/facebook/rocksdb/issues/12351 Pull Request resolved: https://github.com/facebook/rocksdb/pull/12378 Test Plan: ``` sudo bash -c 'echo "always" > /sys/kernel/mm/transparent_hugepage/enabled' ``` And see unit test fails before this change, passes after this change Also tested internal buck build with dbg mode (previously failing). Reviewed By: jaykorean, hx235 Differential Revision: D54139634 Pulled By: pdillinger fbshipit-source-id: 179accebe918d8eecd46a979fcf21d356f9b5519 |
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README.md
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.
Questions and discussions are welcome on the RocksDB Developers Public Facebook group and email list on Google Groups.
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.