1ca1562e35
Summary: Changes: * improves monitoring by displaying average size of a Put value and average scan length * forces the minimum value size to be 10. Before this it was 0 if you didn't set the distribution parameters. * uses reasonable defaults for the distribution parameters that determine value size and scan length * includes seeks in "reads ... found" message, before this they were missing This is for https://github.com/facebook/rocksdb/issues/9672 Pull Request resolved: https://github.com/facebook/rocksdb/pull/9711 Test Plan: Before this change: ./db_bench --benchmarks=fillseq,mixgraph --mix_get_ratio=50 --mix_put_ratio=25 --mix_seek_ratio=25 --num=100000 --value_k=0.2615 --value_sigma=25.45 --iter_k=2.517 --iter_sigma=14.236 fillseq : 4.289 micros/op 233138 ops/sec; 25.8 MB/s mixgraph : 18.461 micros/op 54166 ops/sec; 755.0 MB/s ( Gets:50164 Puts:24919 Seek:24917 of 50164 in 75081 found) After this change: ./db_bench --benchmarks=fillseq,mixgraph --mix_get_ratio=50 --mix_put_ratio=25 --mix_seek_ratio=25 --num=100000 --value_k=0.2615 --value_sigma=25.45 --iter_k=2.517 --iter_sigma=14.236 fillseq : 3.974 micros/op 251553 ops/sec; 27.8 MB/s mixgraph : 16.722 micros/op 59795 ops/sec; 833.5 MB/s ( Gets:50164 Puts:24919 Seek:24917, reads 75081 in 75081 found, avg size: 36.0 value, 504.9 scan) Reviewed By: jay-zhuang Differential Revision: D35030190 Pulled By: mdcallag fbshipit-source-id: d8f555f28d869f752ddb674a524108884511b151 |
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| buckifier | ||
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| cmake | ||
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| db | ||
| db_stress_tool | ||
| docs | ||
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| examples | ||
| file | ||
| fuzz | ||
| include/rocksdb | ||
| java | ||
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| memory | ||
| memtable | ||
| microbench | ||
| monitoring | ||
| options | ||
| plugin | ||
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| table | ||
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| AUTHORS | ||
| CMakeLists.txt | ||
| CODE_OF_CONDUCT.md | ||
| CONTRIBUTING.md | ||
| COPYING | ||
| crash_test.mk | ||
| DEFAULT_OPTIONS_HISTORY.md | ||
| DUMP_FORMAT.md | ||
| HISTORY.md | ||
| INSTALL.md | ||
| issue_template.md | ||
| LANGUAGE-BINDINGS.md | ||
| LICENSE.Apache | ||
| LICENSE.leveldb | ||
| Makefile | ||
| PLUGINS.md | ||
| python.mk | ||
| README.md | ||
| ROCKSDB_LITE.md | ||
| src.mk | ||
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| USERS.md | ||
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| WINDOWS_PORT.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.