rocksdb/tools
Baptiste Lemaire 6b4cdacf41 Add overwrite_probability for filluniquerandom benchmark in db_bench (#8569)
Summary:
Add flags `overwrite_probability` and `overwrite_window_size` flag to `db_bench`.
Add the possibility of performing a `filluniquerandom` benchmark with an overwrite probability.
For each write operation, there is a probability _p_ that the write is an overwrite (_p_=`overwrite_probability`).
When an overwrite is decided, the key is randomly chosen from the last _N_ keys previously inserted into the DB (with _N_=`overwrite_window_size`).
When a pure write is decided, the key inserted into the DB is unique and therefore will not be an overwrite.
The `overwrite_window_size` is used so that the user can decide if the overwrite are mostly targeting recently inserted keys (when `overwrite_window_size` is small compared to the total number of writes), or can also target keys inserted "a long time ago" (when `overwrite_window_size` is comparable to total number of writes).
Note that total number of writes = # of unique insertions + # of overwrites.
No unit test specifically added.
Local testing show the following **throughputs** for `filluniquerandom` with 1M total writes:
- bypass the code inserts (no `overwrite_probability` flag specified): ~14.0MB/s
- `overwrite_probability=0.99`, `overwrite_window_size=10`: ~17.0MB/s
- `overwrite_probability=0.10`, `overwrite_window_size=10`: ~14.0MB/s
- `overwrite_probability=0.99`, `overwrite_window_size=1M`: ~14.5MB/s
- `overwrite_probability=0.10`, `overwrite_window_size=1M`: ~14.0MB/s

Pull Request resolved: https://github.com/facebook/rocksdb/pull/8569

Reviewed By: pdillinger

Differential Revision: D29818631

Pulled By: bjlemaire

fbshipit-source-id: d472b4ea4e457a4da7c4ee4f14b40cccd6a4587a
2021-07-21 11:33:33 -07:00
..
advisor remediation of S205607 2020-07-17 17:20:49 -07:00
block_cache_analyzer Fix cmake build failure with gflags (#8324) 2021-06-01 14:43:15 -07:00
dump Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
rdb Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
analyze_txn_stress_test.sh Add copyright headers per FB open-source checkup tool. (#5199) 2019-04-18 10:55:01 -07:00
auto_sanity_test.sh Add copyright headers per FB open-source checkup tool. (#5199) 2019-04-18 10:55:01 -07:00
backup_db.sh Revamp check_format_compatible.sh (#8012) 2021-03-02 11:42:27 -08:00
benchmark.sh Improvements to benchmark.sh script (#8346) 2021-07-12 12:18:17 -07:00
benchmark_leveldb.sh Add copyright headers per FB open-source checkup tool. (#5199) 2019-04-18 10:55:01 -07:00
blob_dump.cc Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
check_all_python.py Allow missing "unversioned" python, as in CentOS 8 (#6883) 2020-05-29 11:29:23 -07:00
check_format_compatible.sh Add 6.18, 6.19 and 6.20 to check_format_compatible.sh (#8236) 2021-04-27 10:24:27 -07:00
CMakeLists.txt Mark dependencies as PRIVATE and fix missing dependencies in tools. (#6790) 2020-05-12 21:07:55 -07:00
db_bench.cc Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
db_bench_tool.cc Add overwrite_probability for filluniquerandom benchmark in db_bench (#8569) 2021-07-21 11:33:33 -07:00
db_bench_tool_test.cc Add support for the integrated BlobDB to db_bench (#7956) 2021-02-17 11:10:18 -08:00
db_crashtest.py Crashtest mempurge (#8545) 2021-07-16 10:20:22 -07:00
db_repl_stress.cc Migrate away from Travis+Linux+amd64 (#7791) 2020-12-22 00:20:57 -08:00
db_sanity_test.cc Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
dbench_monitor Fix /bin/bash shebangs 2017-08-03 15:56:46 -07:00
Dockerfile
generate_random_db.sh Add copyright headers per FB open-source checkup tool. (#5199) 2019-04-18 10:55:01 -07:00
ingest_external_sst.sh Add copyright headers per FB open-source checkup tool. (#5199) 2019-04-18 10:55:01 -07:00
io_tracer_parser.cc Add IO Tracer Parser (#7333) 2020-09-23 15:50:26 -07:00
io_tracer_parser_test.cc Fix cmake build failure with gflags (#8324) 2021-06-01 14:43:15 -07:00
io_tracer_parser_tool.cc Add request_id in IODebugContext. (#8045) 2021-04-01 13:14:51 -07:00
io_tracer_parser_tool.h Add IO Tracer Parser (#7333) 2020-09-23 15:50:26 -07:00
ldb.cc Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
ldb_cmd.cc Add list live files metadata (#8446) 2021-06-22 19:07:46 -07:00
ldb_cmd_impl.h Add list live files metadata (#8446) 2021-06-22 19:07:46 -07:00
ldb_cmd_test.cc Add CreateFrom methods to Env/FileSystem (#8174) 2021-06-15 03:43:48 -07:00
ldb_test.py Add list live files metadata (#8446) 2021-06-22 19:07:46 -07:00
ldb_tool.cc Add list live files metadata (#8446) 2021-06-22 19:07:46 -07:00
pflag Fix /bin/bash shebangs 2017-08-03 15:56:46 -07:00
reduce_levels_test.cc Add more tests for assert status checked (#7524) 2020-12-22 23:45:58 -08:00
regression_test.sh Update internal build script (#7957) 2021-02-11 14:55:43 -08:00
report_lite_binary_size.sh Add copyright headers per FB open-source checkup tool. (#5199) 2019-04-18 10:55:01 -07:00
restore_db.sh Revamp check_format_compatible.sh (#8012) 2021-03-02 11:42:27 -08:00
rocksdb_dump_test.sh Add copyright headers per FB open-source checkup tool. (#5199) 2019-04-18 10:55:01 -07:00
run_flash_bench.sh Add copyright headers per FB open-source checkup tool. (#5199) 2019-04-18 10:55:01 -07:00
run_leveldb.sh Add copyright headers per FB open-source checkup tool. (#5199) 2019-04-18 10:55:01 -07:00
sample-dump.dmp
simulated_hybrid_file_system.cc Write file temperature information to manifest (#8284) 2021-05-17 15:15:23 -07:00
simulated_hybrid_file_system.h Write file temperature information to manifest (#8284) 2021-05-17 15:15:23 -07:00
sst_dump.cc Implement a new subcommand "identify" for sst_dump (#6943) 2020-06-08 13:58:28 -07:00
sst_dump_test.cc Add CreateFrom methods to Env/FileSystem (#8174) 2021-06-15 03:43:48 -07:00
sst_dump_tool.cc Add CreateFrom methods to Env/FileSystem (#8174) 2021-06-15 03:43:48 -07:00
trace_analyzer.cc Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
trace_analyzer_test.cc Trace MultiGet Keys and CF_IDs to the trace file (#8421) 2021-06-18 15:04:05 -07:00
trace_analyzer_tool.cc Trace MultiGet Keys and CF_IDs to the trace file (#8421) 2021-06-18 15:04:05 -07:00
trace_analyzer_tool.h Introduce a new trace file format (v 0.2) for better extension (#7977) 2021-02-18 23:05:35 -08:00
verify_random_db.sh Add copyright headers per FB open-source checkup tool. (#5199) 2019-04-18 10:55:01 -07:00
write_external_sst.sh Revamp check_format_compatible.sh (#8012) 2021-03-02 11:42:27 -08:00
write_stress.cc Add a SystemClock class to capture the time functions of an Env (#7858) 2021-01-25 22:09:11 -08:00
write_stress_runner.py Allow missing "unversioned" python, as in CentOS 8 (#6883) 2020-05-29 11:29:23 -07:00