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Andrew Kryczka fb636f2498 Fix write stall stats dump format (#11445)
Summary:
I noticed in https://github.com/facebook/rocksdb/issues/11426 there is a missing line break. Before this PR the output looked like

```
$ ./db_bench -stats_per_interval=1 -stats_interval=100000
...
Write Stall (count): cf-l0-file-count-limit-delays-with-ongoing-compaction: 0, cf-l0-file-count-limit-stops-with-ongoing-compaction: 0, l0-file-count-limit-delays: 0, l0-file-count-limit-stops: 0, memtable-limit-delays: 0, memtable-limit-stops: 0, pending-compaction-bytes-delays: 0, pending-compaction-bytes-stops: 0, total-delays: 0, total-stops: 0, Block cache LRUCache@0x7f8695831b50#2766536 capacity: 32.00 MB seed: 1155354975 usage: 0.09 KB table_size: 1024 occupancy: 1 collections: 1 last_copies: 0 last_secs: 9.3e-05 secs_since: 2
...
Write Stall (count): write-buffer-manager-limit-stops: 0, num-running-compactions: 0
...
```

After this PR it looks like

```
$ ./db_bench -stats_per_interval=1 -stats_interval=100000
...
Write Stall (count): cf-l0-file-count-limit-delays-with-ongoing-compaction: 0, cf-l0-file-count-limit-stops-with-ongoing-compaction: 0, l0-file-count-limit-delays: 0, l0-file-count-limit-stops: 0, memtable-limit-delays: 0, memtable-limit-stops: 0, pending-compaction-bytes-delays: 0, pending-compaction-bytes-stops: 0, total-delays: 0, total-stops: 0
Block cache LRUCache@0x7f8e0d231b50#2736585 capacity: 32.00 MB seed: 920433955 usage: 0.09 KB table_size: 1024 occupancy: 1 collections: 1 last_copies: 1 last_secs: 6.5e-05 secs_since: 4
...
Write Stall (count): write-buffer-manager-limit-stops: 0
num-running-compactions: 0
...
```

Pull Request resolved: https://github.com/facebook/rocksdb/pull/11445

Reviewed By: hx235

Differential Revision: D45844752

Pulled By: ajkr

fbshipit-source-id: 1c708cb05b6e270922ac2fa95f5d011f273347eb
2023-05-15 11:47:17 -07:00
.circleci Revert enabling IO uring in db_stress (#11242) 2023-02-21 12:53:55 -08:00
.github/workflows ci: add GitHub token permissions for workflow (#10549) 2022-10-04 12:10:30 -07:00
buckifier Fix duplicate symbols in linking with buck2 (#11421) 2023-05-01 10:45:36 -07:00
build_tools Simplify detection of x86 CPU features (#11419) 2023-05-09 22:25:45 -07:00
cache Add hash_seed to Caches (#11391) 2023-05-09 22:24:26 -07:00
cmake gcc-11 and cmake related cleanup (#9286) 2021-12-17 17:04:35 -08:00
coverage Remove platform009 and default to platform010 (#11333) 2023-03-30 09:56:37 -07:00
db Fix write stall stats dump format (#11445) 2023-05-15 11:47:17 -07:00
db_stress_tool Block per key-value checksum (#11287) 2023-04-25 12:08:23 -07:00
docs Remove docs/Gemfile.lock and update github-pages version (#11173) 2023-02-14 12:17:23 -08:00
env Add hash_seed to Caches (#11391) 2023-05-09 22:24:26 -07:00
examples Remove RocksDB LITE (#11147) 2023-01-27 13:14:19 -08:00
file Record and use the tail size to prefetch table tail (#11406) 2023-05-08 13:14:28 -07:00
fuzz Block per key-value checksum (#11287) 2023-04-25 12:08:23 -07:00
include/rocksdb Add block checksum mismatch ticker stat (#11438) 2023-05-12 18:16:11 -07:00
java Add block checksum mismatch ticker stat (#11438) 2023-05-12 18:16:11 -07:00
logging Disabling some IO error assertion in EnvLogger (#11314) 2023-03-20 13:23:29 -07:00
memory Shard JemallocNodumpAllocator (#11400) 2023-05-01 10:14:43 -07:00
memtable remove redundant move (#11418) 2023-05-03 09:37:21 -07:00
microbench Group rocksdb.sst.read.micros stat by IOActivity flush and compaction (#11288) 2023-04-21 09:07:18 -07:00
monitoring Add block checksum mismatch ticker stat (#11438) 2023-05-12 18:16:11 -07:00
options Delete temp OPTIONS file on failure to write it (#11423) 2023-05-12 22:39:39 -07:00
plugin Add initial CMake support to plugin (#9214) 2021-11-30 17:16:53 -08:00
port Simplify detection of x86 CPU features (#11419) 2023-05-09 22:25:45 -07:00
table Add block checksum mismatch ticker stat (#11438) 2023-05-12 18:16:11 -07:00
test_util Add hash_seed to Caches (#11391) 2023-05-09 22:24:26 -07:00
third-party fix optimization-disabled test builds with platform010 (#11361) 2023-04-10 13:59:44 -07:00
tools Add hash_seed to Caches (#11391) 2023-05-09 22:24:26 -07:00
trace_replay Fix error maybe-uninitialized #11100 (#11101) 2023-01-19 13:59:48 -08:00
util Add support in log writer and reader for a user-defined timestamp size record (#11433) 2023-05-11 17:26:19 -07:00
utilities Deflake some old BlobDB test cases (#11417) 2023-04-28 14:07:45 -07:00
.clang-format
.gitignore remove redundant move (#11418) 2023-05-03 09:37:21 -07:00
.lgtm.yml
.watchmanconfig
AUTHORS
CMakeLists.txt Simplify detection of x86 CPU features (#11419) 2023-05-09 22:25:45 -07:00
CODE_OF_CONDUCT.md
common.mk Clean up variables for temporary directory (#9961) 2022-05-06 16:38:06 -07:00
CONTRIBUTING.md
COPYING
crash_test.mk Allow a custom DB cleanup command to be passed to db_crashtest.py (#10883) 2022-10-27 19:47:01 -07:00
DEFAULT_OPTIONS_HISTORY.md Add Options::DisableExtraChecks, clarify force_consistency_checks (#9363) 2022-01-18 17:31:03 -08:00
DUMP_FORMAT.md
HISTORY.md Delete temp OPTIONS file on failure to write it (#11423) 2023-05-12 22:39:39 -07:00
INSTALL.md Simplify detection of x86 CPU features (#11419) 2023-05-09 22:25:45 -07:00
issue_template.md
LANGUAGE-BINDINGS.md Add grocksdb in Go language bindings (#10498) 2022-08-23 15:02:10 -07:00
LICENSE.Apache
LICENSE.leveldb
Makefile Simplify detection of x86 CPU features (#11419) 2023-05-09 22:25:45 -07:00
PLUGINS.md Added encryption plugin based on Intel open-source ipp-crypto library (#11429) 2023-05-08 12:13:43 -07:00
README.md Remove deprecated integration tests from README.md (#11354) 2023-04-07 16:52:50 -07:00
rocksdb.pc.in build: fix pkg-config file generation (#9953) 2022-05-30 12:46:40 -07:00
src.mk New stat rocksdb.{cf|db}-write-stall-stats exposed in a structural way (#11300) 2023-03-18 09:51:58 -07:00
TARGETS Fix duplicate symbols in linking with buck2 (#11421) 2023-05-01 10:45:36 -07:00
thirdparty.inc
USERS.md Add more users (#11369) 2023-05-03 10:47:41 -07:00
Vagrantfile
WINDOWS_PORT.md Update branch name in WINDOWS_PORT.md (#8745) 2021-09-01 19:26:39 -07:00

RocksDB: A Persistent Key-Value Store for Flash and RAM Storage

CircleCI Status

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.