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rocksdb/include/rocksdb
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Yanqin Jin ab202e8d72 Add a new stats level to exclude tickers (#7329) 
Summary:
Currently, application may pass a statistics object to db but later
wants to reduce stats tracking overhead by setting stats level to
kExceptHistogramOrTimers (the current lowest level). Tickers will still
be incremented, causing up to 1% CPU. We can add a new lowest stats
level `kExceptTickers` to disable ticker incrementing as well, thus
reducing CPU cycles spent on tickers.

Test Plan (devserver):
```
make check
make clean
DEBUG_LEVEL=0 make db_bench
./db_bench -perf_level=1 -stats_level=0 -statistics -benchmarks=fillseq,readrandom -duration=120
```

Measure CPU util (%) before and after change:
CPU util by rocksdb::RecordTick: 1.1 vs (<0.1)

Pull Request resolved: https://github.com/facebook/rocksdb/pull/7329

Reviewed By: pdillinger

Differential Revision: D23434014

Pulled By: riversand963

fbshipit-source-id: 72ff0f02a192ac476d4b0044b9f37fd4a22ff0d4
2020-09-04 23:25:03 -07:00
..
utilities add ldb unsafe_remove_sst_file subcommand (#7335) 2020-09-03 16:54:51 -07:00
advanced_options.h Add initial set of options for integrated blob write path (#7280) 2020-08-18 18:32:37 -07:00
c.h Expose rocksdb_open_column_families_with_ttl C function (#7314) 2020-09-03 14:39:58 -07:00
cache.h Add Functions to OptionTypeInfo (#6422) 2020-04-28 18:04:26 -07:00
cleanable.h Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
compaction_filter.h Compaction filter support for BlobDB (#6850) 2020-06-29 17:32:14 -07:00
compaction_job_stats.h Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
comparator.h Iterator with timestamp (#6255) 2020-03-06 16:24:27 -08:00
compression_type.h Move CompressionType to its own header file (#7162) 2020-08-03 15:49:31 -07:00
concurrent_task_limiter.h Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
convenience.h Move CompressionType to its own header file (#7162) 2020-08-03 15:49:31 -07:00
db_bench_tool.h Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
db_dump_tool.h Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
db_stress_tool.h Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
db.h add warning on DeleteFile() API (#7337) 2020-09-03 16:42:01 -07:00
env_encryption.h Make EncryptEnv inheritable (#6830) 2020-06-22 13:27:16 -07:00
env.h Add EnvTestWithParam::OptionsTest to the ASSERT_STATUS_CHECKED passes (#7283) 2020-08-20 19:18:35 -07:00
experimental.h Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
file_checksum.h BackupEngine supports custom file checksums (#7085) 2020-08-12 13:31:09 -07:00
file_system.h Add buffer prefetch support for non directIO usecase (#7312) 2020-08-27 18:16:53 -07:00
filter_policy.h Add Functions to OptionTypeInfo (#6422) 2020-04-28 18:04:26 -07:00
flush_block_policy.h Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
io_status.h prototype status check enforcement (#6798) 2020-05-08 12:40:43 -07:00
iostats_context.h Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
iterator.h Iterator with timestamp (#6255) 2020-03-06 16:24:27 -08:00
ldb_tool.h Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
listener.h Pass SST file checksum information through OnTableFileCreated (#7108) 2020-08-25 10:46:11 -07:00
memory_allocator.h Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
memtablerep.h Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
merge_operator.h Header file should not be executable (#7182) 2020-07-28 09:39:13 -07:00
metadata.h Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
options.h fix doc about kTolerateCorruptedTailRecords recovery (#7270) 2020-08-18 09:52:25 -07:00
perf_context.h Fix more defects reported by Coverity Scan (#6935) 2020-06-04 15:35:08 -07:00
perf_level.h Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
persistent_cache.h Fix persistent cache on windows (#6932) 2020-06-13 13:28:31 -07:00
rate_limiter.h Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
rocksdb_namespace.h Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
slice_transform.h Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
slice.h Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
snapshot.h Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
sst_dump_tool.h Add --version and --help to ldb and sst_dump (#6951) 2020-06-09 10:04:01 -07:00
sst_file_manager.h Add logs and stats in DeleteScheduler (#6927) 2020-06-05 09:43:04 -07:00
sst_file_reader.h Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
sst_file_writer.h Generate file checksum in SstFileWriter (#6859) 2020-05-20 11:55:31 -07:00
sst_partitioner.h SST Partitioner interface that allows to split SST files (#6957) 2020-07-24 13:44:49 -07:00
statistics.h Add a new stats level to exclude tickers (#7329) 2020-09-04 23:25:03 -07:00
stats_history.h Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
status.h Misc things for ASSERT_STATUS_CHECKED, also gcc 4.8.5 (#6871) 2020-05-23 06:53:37 -07:00
table_properties.h Store DB identity and DB session ID in SST files (#6983) 2020-06-17 10:57:40 -07:00
table.h Extend Get/MultiGet deadline support to table open (#6982) 2020-06-29 14:53:17 -07:00
thread_status.h Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
threadpool.h Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
trace_reader_writer.h Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
transaction_log.h Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
types.h Add a new EntryType for deletion with timestamp (#7195) 2020-08-17 16:26:06 -07:00
universal_compaction.h Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
version.h Update HISTORY and version for 6.12 release (#7194) 2020-07-29 10:13:21 -07:00
wal_filter.h Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
write_batch_base.h Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
write_batch.h Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
write_buffer_manager.h Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00