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Baptiste Lemaire 4361d6d163 Add simple heuristics for experimental mempurge. (#8583) 
Summary:
Add `experimental_mempurge_policy` option flag and introduce two new `MemPurge` (Memtable Garbage Collection) policies: 'ALWAYS' and 'ALTERNATE'. Default value: ALTERNATE.
`ALWAYS`: every flush will first go through a `MemPurge` process. If the output is too big to fit into a single memtable, then the mempurge is aborted and a regular flush process carries on. `ALWAYS` is designed for user that need to reduce the number of L0 SST file created to a strict minimum, and can afford a small dent in performance (possibly hits to CPU usage, read efficiency, and maximum burst write throughput).
`ALTERNATE`: a flush is transformed into a `MemPurge` except if one of the memtables being flushed is the product of a previous `MemPurge`. `ALTERNATE` is a good tradeoff between reduction in number of L0 SST files created and performance. `ALTERNATE` perform particularly well for completely random garbage ratios, or garbage ratios anywhere in (0%,50%], and even higher when there is a wild variability in garbage ratios.
This PR also includes support for `experimental_mempurge_policy` in `db_bench`.
Testing was done locally by replacing all the `MemPurge` policies of the unit tests with `ALTERNATE`, as well as local testing with `db_crashtest.py` `whitebox` and `blackbox`. Overall, if an `ALWAYS` mempurge policy passes the tests, there is no reasons why an `ALTERNATE` policy would fail, and therefore the mempurge policy was set to `ALWAYS` for all mempurge unit tests.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/8583

Reviewed By: pdillinger

Differential Revision: D29888050

Pulled By: bjlemaire

fbshipit-source-id: e2cf26646d66679f6f5fb29842624615610759c1
2021-07-26 11:56:29 -07:00
..
blob Fix a minor issue with initializing the test path (#8555) 2021-07-23 08:38:45 -07:00
compaction CompactionJob::Install(): fix log truncation (#8563) 2021-07-23 11:39:24 -07:00
db_impl Retire superfluous functions introduced in earlier mempurge PRs. (#8558) 2021-07-22 18:29:13 -07:00
arena_wrapped_db_iter.cc Rename ImmutableOptions variables (#8409) 2021-06-16 16:51:38 -07:00
arena_wrapped_db_iter.h Rename ImmutableOptions variables (#8409) 2021-06-16 16:51:38 -07:00
builder.cc Memtable "MemPurge" prototype (#8454) 2021-07-02 05:23:02 -07:00
builder.h Added memtable garbage statistics (#8411) 2021-06-18 04:57:27 -07:00
c.cc Add ribbon filter to C API (#8486) 2021-07-09 16:22:48 -07:00
c_test.c Add ribbon filter to C API (#8486) 2021-07-09 16:22:48 -07:00
column_family.cc Retire superfluous functions introduced in earlier mempurge PRs. (#8558) 2021-07-22 18:29:13 -07:00
column_family.h Retire superfluous functions introduced in earlier mempurge PRs. (#8558) 2021-07-22 18:29:13 -07:00
column_family_test.cc Add CreateFrom methods to Env/FileSystem (#8174) 2021-06-15 03:43:48 -07:00
compact_files_test.cc Compaction should not move data to up level (#8116) 2021-03-29 17:10:42 -07:00
comparator_db_test.cc Remove unused includes (#7604) 2020-10-28 23:22:27 -07:00
convenience.cc Make ImmutableOptions struct that inherits from ImmutableCFOptions and ImmutableDBOptions (#8262) 2021-05-05 14:00:17 -07:00
corruption_test.cc Add CreateFrom methods to Env/FileSystem (#8174) 2021-06-15 03:43:48 -07:00
cuckoo_table_db_test.cc Revert "Turn on memtable bloom filter by default. (#6584)" (#7939) 2021-02-06 22:34:30 -08:00
db_basic_test.cc Fix a minor issue with initializing the test path (#8555) 2021-07-23 08:38:45 -07:00
db_block_cache_test.cc Fix a minor issue with initializing the test path (#8555) 2021-07-23 08:38:45 -07:00
db_bloom_filter_test.cc Fix a minor issue with initializing the test path (#8555) 2021-07-23 08:38:45 -07:00
db_compaction_filter_test.cc Fix a minor issue with initializing the test path (#8555) 2021-07-23 08:38:45 -07:00
db_compaction_test.cc Fix a minor issue with initializing the test path (#8555) 2021-07-23 08:38:45 -07:00
db_dynamic_level_test.cc Fix a minor issue with initializing the test path (#8555) 2021-07-23 08:38:45 -07:00
db_encryption_test.cc Fix a minor issue with initializing the test path (#8555) 2021-07-23 08:38:45 -07:00
db_filesnapshot.cc Fix GetLiveFiles() returning OPTIONS-000000 (#8268) 2021-05-05 12:54:46 -07:00
db_flush_test.cc Add simple heuristics for experimental mempurge. (#8583) 2021-07-26 11:56:29 -07:00
db_info_dumper.cc Fix write-ahead log file size overflow (#7870) 2021-01-19 13:47:48 -08:00
db_info_dumper.h Add a DB Session ID (#6959) 2020-06-15 10:47:02 -07:00
db_inplace_update_test.cc Fix a minor issue with initializing the test path (#8555) 2021-07-23 08:38:45 -07:00
db_io_failure_test.cc Fix a minor issue with initializing the test path (#8555) 2021-07-23 08:38:45 -07:00
db_iter.cc Rename ImmutableOptions variables (#8409) 2021-06-16 16:51:38 -07:00
db_iter.h Rename ImmutableOptions variables (#8409) 2021-06-16 16:51:38 -07:00
db_iter_stress_test.cc Make ImmutableOptions struct that inherits from ImmutableCFOptions and ImmutableDBOptions (#8262) 2021-05-05 14:00:17 -07:00
db_iter_test.cc Rename ImmutableOptions variables (#8409) 2021-06-16 16:51:38 -07:00
db_iterator_test.cc Fix a minor issue with initializing the test path (#8555) 2021-07-23 08:38:45 -07:00
db_kv_checksum_test.cc Fix a minor issue with initializing the test path (#8555) 2021-07-23 08:38:45 -07:00
db_log_iter_test.cc Fix a minor issue with initializing the test path (#8555) 2021-07-23 08:38:45 -07:00
db_logical_block_size_cache_test.cc Add further tests to ASSERT_STATUS_CHECKED (2) (#7698) 2020-12-09 21:21:16 -08:00
db_memtable_test.cc Fix a minor issue with initializing the test path (#8555) 2021-07-23 08:38:45 -07:00
db_merge_operand_test.cc Fix a minor issue with initializing the test path (#8555) 2021-07-23 08:38:45 -07:00
db_merge_operator_test.cc Fix a minor issue with initializing the test path (#8555) 2021-07-23 08:38:45 -07:00
db_options_test.cc Fix a minor issue with initializing the test path (#8555) 2021-07-23 08:38:45 -07:00
db_properties_test.cc Fix a minor issue with initializing the test path (#8555) 2021-07-23 08:38:45 -07:00
db_range_del_test.cc Fix a minor issue with initializing the test path (#8555) 2021-07-23 08:38:45 -07:00
db_secondary_test.cc Fix a minor issue with initializing the test path (#8555) 2021-07-23 08:38:45 -07:00
db_sst_test.cc Fix a minor issue with initializing the test path (#8555) 2021-07-23 08:38:45 -07:00
db_statistics_test.cc Fix a minor issue with initializing the test path (#8555) 2021-07-23 08:38:45 -07:00
db_table_properties_test.cc Fix a minor issue with initializing the test path (#8555) 2021-07-23 08:38:45 -07:00
db_tailing_iter_test.cc Fix a minor issue with initializing the test path (#8555) 2021-07-23 08:38:45 -07:00
db_test.cc Fix a minor issue with initializing the test path (#8555) 2021-07-23 08:38:45 -07:00
db_test2.cc Fix a minor issue with initializing the test path (#8555) 2021-07-23 08:38:45 -07:00
db_test_util.cc Make EncryptionProvider and BlockCipher into Customizable objects (#8354) 2021-07-16 07:58:51 -07:00
db_test_util.h Cache warming data blocks during flush (#8242) 2021-06-17 21:56:47 -07:00
db_universal_compaction_test.cc Fix a minor issue with initializing the test path (#8555) 2021-07-23 08:38:45 -07:00
db_wal_test.cc Fix a minor issue with initializing the test path (#8555) 2021-07-23 08:38:45 -07:00
db_with_timestamp_basic_test.cc Move slow valgrind tests behind -DROCKSDB_FULL_VALGRIND_RUN (#8475) 2021-07-07 11:14:05 -07:00
db_with_timestamp_compaction_test.cc Fix a minor issue with initializing the test path (#8555) 2021-07-23 08:38:45 -07:00
db_write_buffer_manager_test.cc Fix a minor issue with initializing the test path (#8555) 2021-07-23 08:38:45 -07:00
db_write_test.cc Fix a minor issue with initializing the test path (#8555) 2021-07-23 08:38:45 -07:00
dbformat.cc Make CompactRange and GetApproximateSizes work with timestamp (#7684) 2020-12-02 13:00:53 -08:00
dbformat.h Fix some typos in comments (#8066) 2021-03-25 21:18:08 -07:00
dbformat_test.cc Remove unused includes (#7604) 2020-10-28 23:22:27 -07:00
deletefile_test.cc Fix a minor issue with initializing the test path (#8555) 2021-07-23 08:38:45 -07:00
error_handler.cc Fix incorrect Status::NoSpace() status check (#8504) 2021-07-20 18:09:51 -07:00
error_handler.h Fix some typos in comments (#8066) 2021-03-25 21:18:08 -07:00
error_handler_fs_test.cc Fix a minor issue with initializing the test path (#8555) 2021-07-23 08:38:45 -07:00
event_helpers.cc Add table properties for number of entries added to filters (#8323) 2021-05-21 17:11:32 -07:00
event_helpers.h Pass SST file checksum information through OnTableFileCreated (#7108) 2020-08-25 10:46:11 -07:00
experimental.cc Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
external_sst_file_basic_test.cc Fix a minor issue with initializing the test path (#8555) 2021-07-23 08:38:45 -07:00
external_sst_file_ingestion_job.cc Sync ingested files only if reopen is supported by the FS (#8296) 2021-05-18 19:33:55 -07:00
external_sst_file_ingestion_job.h Use SystemClock* instead of std::shared_ptr<SystemClock> in lower level routines (#8033) 2021-03-15 04:34:11 -07:00
external_sst_file_test.cc Fix a minor issue with initializing the test path (#8555) 2021-07-23 08:38:45 -07:00
fault_injection_test.cc Add more tests for assert status checked (#7524) 2020-12-22 23:45:58 -08:00
file_indexer.cc Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
file_indexer.h Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
file_indexer_test.cc Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
filename_test.cc Remove unused includes (#7604) 2020-10-28 23:22:27 -07:00
flush_job.cc Add simple heuristics for experimental mempurge. (#8583) 2021-07-26 11:56:29 -07:00
flush_job.h Add simple heuristics for experimental mempurge. (#8583) 2021-07-26 11:56:29 -07:00
flush_job_test.cc Use DbSessionId as cache key prefix when secondary cache is enabled (#8360) 2021-06-10 11:02:43 -07:00
flush_scheduler.cc Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
flush_scheduler.h Include C++ standard library headers instead of C compatibility headers (#8068) 2021-03-19 12:09:47 -07:00
forward_iterator.cc Fix some typos in comments (#8066) 2021-03-25 21:18:08 -07:00
forward_iterator.h Properly report IO errors when IndexType::kBinarySearchWithFirstKey is used (#6621) 2020-04-15 17:40:44 -07:00
forward_iterator_bench.cc Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
import_column_family_job.cc Add a SystemClock class to capture the time functions of an Env (#7858) 2021-01-25 22:09:11 -08:00
import_column_family_job.h Use SystemClock* instead of std::shared_ptr<SystemClock> in lower level routines (#8033) 2021-03-15 04:34:11 -07:00
import_column_family_test.cc Fix a minor issue with initializing the test path (#8555) 2021-07-23 08:38:45 -07:00
internal_stats.cc Don't hold DB mutex for block cache entry stat scans (#8538) 2021-07-16 14:13:08 -07:00
internal_stats.h Don't hold DB mutex for block cache entry stat scans (#8538) 2021-07-16 14:13:08 -07:00
job_context.h Rename ImmutableOptions variables (#8409) 2021-06-16 16:51:38 -07:00
kv_checksum.h Integrity protection for live updates to WriteBatch (#7748) 2021-01-29 12:18:58 -08:00
listener_test.cc Fix a minor issue with initializing the test path (#8555) 2021-07-23 08:38:45 -07:00
log_format.h Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
log_reader.cc Fix kPointInTimeRecovery handling of truncated WAL (#7701) 2020-11-30 18:11:38 -08:00
log_reader.h Real fix for race in backup custom checksum checking (#7309) 2020-08-26 10:39:20 -07:00
log_test.cc Make StringEnv, StringSink, StringSource use FS classes (#7786) 2021-01-04 16:01:01 -08:00
log_writer.cc Using existing crc32c checksum in checksum handoff for Manifest and WAL (#8412) 2021-06-25 00:47:17 -07:00
log_writer.h Include C++ standard library headers instead of C compatibility headers (#8068) 2021-03-19 12:09:47 -07:00
logs_with_prep_tracker.cc Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
logs_with_prep_tracker.h Include C++ standard library headers instead of C compatibility headers (#8068) 2021-03-19 12:09:47 -07:00
lookup_key.h Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
malloc_stats.cc Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
malloc_stats.h Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
manual_compaction_test.cc Add more tests for assert status checked (#7524) 2020-12-22 23:45:58 -08:00
memtable.cc Retire superfluous functions introduced in earlier mempurge PRs. (#8558) 2021-07-22 18:29:13 -07:00
memtable.h Add simple heuristics for experimental mempurge. (#8583) 2021-07-26 11:56:29 -07:00
memtable_list.cc Retire superfluous functions introduced in earlier mempurge PRs. (#8558) 2021-07-22 18:29:13 -07:00
memtable_list.h Add simple heuristics for experimental mempurge. (#8583) 2021-07-26 11:56:29 -07:00
memtable_list_test.cc Use DbSessionId as cache key prefix when secondary cache is enabled (#8360) 2021-06-10 11:02:43 -07:00
merge_context.h Add Merge Operator support to WriteBatchWithIndex (#8135) 2021-05-10 12:50:25 -07:00
merge_helper.cc Add support for Merge with base value during Compaction in IntegratedBlobDB (#8445) 2021-06-24 18:11:30 -07:00
merge_helper.h Add support for Merge with base value during Compaction in IntegratedBlobDB (#8445) 2021-06-24 18:11:30 -07:00
merge_helper_test.cc Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
merge_operator.cc Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
merge_test.cc MergeHelper::FilterMerge() calling ElapsedNanosSafe() upon exit even … (#7867) 2021-01-21 13:13:02 -08:00
obsolete_files_test.cc Fix a minor issue with initializing the test path (#8555) 2021-07-23 08:38:45 -07:00
options_file_test.cc No elide constructors (#7798) 2020-12-23 16:55:53 -08:00
output_validator.cc Use NPHash64 in more places (#7632) 2020-11-10 23:42:13 -08:00
output_validator.h Add remote compaction public API (#8300) 2021-05-19 21:41:31 -07:00
perf_context_test.cc Use SystemClock* instead of std::shared_ptr<SystemClock> in lower level routines (#8033) 2021-03-15 04:34:11 -07:00
periodic_work_scheduler.cc Use SystemClock* instead of std::shared_ptr<SystemClock> in lower level routines (#8033) 2021-03-15 04:34:11 -07:00
periodic_work_scheduler.h Add a SystemClock class to capture the time functions of an Env (#7858) 2021-01-25 22:09:11 -08:00
periodic_work_scheduler_test.cc Fix a minor issue with initializing the test path (#8555) 2021-07-23 08:38:45 -07:00
pinned_iterators_manager.h Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
plain_table_db_test.cc Make ImmutableOptions struct that inherits from ImmutableCFOptions and ImmutableDBOptions (#8262) 2021-05-05 14:00:17 -07:00
pre_release_callback.h Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
prefix_test.cc Use SystemClock* instead of std::shared_ptr<SystemClock> in lower level routines (#8033) 2021-03-15 04:34:11 -07:00
range_del_aggregator.cc In ParseInternalKey(), include corrupt key info in Status (#7515) 2020-10-28 10:12:58 -07:00
range_del_aggregator.h Fix some typos in comments (#8066) 2021-03-25 21:18:08 -07:00
range_del_aggregator_bench.cc Use SystemClock* instead of std::shared_ptr<SystemClock> in lower level routines (#8033) 2021-03-15 04:34:11 -07:00
range_del_aggregator_test.cc Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
range_tombstone_fragmenter.cc Added memtable garbage statistics (#8411) 2021-06-18 04:57:27 -07:00
range_tombstone_fragmenter.h Added memtable garbage statistics (#8411) 2021-06-18 04:57:27 -07:00
range_tombstone_fragmenter_test.cc Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
read_callback.h Get() with timestamp should respect snapshot (#7227) 2020-08-14 19:20:58 -07:00
repair.cc Retire superfluous functions introduced in earlier mempurge PRs. (#8558) 2021-07-22 18:29:13 -07:00
repair_test.cc Fix a minor issue with initializing the test path (#8555) 2021-07-23 08:38:45 -07:00
snapshot_checker.h Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
snapshot_impl.cc Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
snapshot_impl.h Fix some typos in comments (#8066) 2021-03-25 21:18:08 -07:00
table_cache.cc Use DbSessionId as cache key prefix when secondary cache is enabled (#8360) 2021-06-10 11:02:43 -07:00
table_cache.h Use DbSessionId as cache key prefix when secondary cache is enabled (#8360) 2021-06-10 11:02:43 -07:00
table_properties_collector.cc Apply sample_for_compression to all block-based tables (#8105) 2021-03-25 15:00:45 -07:00
table_properties_collector.h Partially revert the "apply subrange of table property collectors" change (#8465) 2021-07-06 10:14:32 -07:00
table_properties_collector_test.cc Make it possible to apply only a subrange of table property collectors (#8298) 2021-05-17 18:28:39 -07:00
transaction_log_impl.cc Add more tests for assert status checked (#7524) 2020-12-22 23:45:58 -08:00
transaction_log_impl.h Store FileSystemPtr object that contains FileSystem ptr (#7180) 2020-08-12 17:31:23 -07:00
trim_history_scheduler.cc Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
trim_history_scheduler.h Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
version_builder.cc Handle blob files when options.best_efforts_recovery is true (#8180) 2021-04-19 11:56:14 -07:00
version_builder.h Handle blob files when options.best_efforts_recovery is true (#8180) 2021-04-19 11:56:14 -07:00
version_builder_test.cc Print blob file checksums as hex (#8437) 2021-06-22 09:49:44 -07:00
version_edit.cc Write file temperature information to manifest (#8284) 2021-05-17 15:15:23 -07:00
version_edit.h Write file temperature information to manifest (#8284) 2021-05-17 15:15:23 -07:00
version_edit_handler.cc Retire superfluous functions introduced in earlier mempurge PRs. (#8558) 2021-07-22 18:29:13 -07:00
version_edit_handler.h Fixed manifest_dump issues when printing keys and values containing null characters (#8378) 2021-06-10 12:55:20 -07:00
version_edit_test.cc Make it able to ignore WAL related VersionEdits in older versions (#7873) 2021-01-19 19:27:53 -08:00
version_set.cc Retire superfluous functions introduced in earlier mempurge PRs. (#8558) 2021-07-22 18:29:13 -07:00
version_set.h Retire superfluous functions introduced in earlier mempurge PRs. (#8558) 2021-07-22 18:29:13 -07:00
version_set_test.cc Print blob file checksums as hex (#8437) 2021-06-22 09:49:44 -07:00
wal_edit.cc Always track WAL obsoletion (#7759) 2020-12-09 16:02:12 -08:00
wal_edit.h Always track WAL obsoletion (#7759) 2020-12-09 16:02:12 -08:00
wal_edit_test.cc Always track WAL obsoletion (#7759) 2020-12-09 16:02:12 -08:00
wal_manager.cc Make types of Immutable/Mutable Options fields match that of the underlying Option (#8176) 2021-04-22 20:43:54 -07:00
wal_manager.h Store FileSystemPtr object that contains FileSystem ptr (#7180) 2020-08-12 17:31:23 -07:00
wal_manager_test.cc Use DbSessionId as cache key prefix when secondary cache is enabled (#8360) 2021-06-10 11:02:43 -07:00
write_batch.cc Use SystemClock* instead of std::shared_ptr<SystemClock> in lower level routines (#8033) 2021-03-15 04:34:11 -07:00
write_batch_base.cc Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
write_batch_internal.h Integrity protection for live updates to WriteBatch (#7748) 2021-01-29 12:18:58 -08:00
write_batch_test.cc Make ImmutableOptions struct that inherits from ImmutableCFOptions and ImmutableDBOptions (#8262) 2021-05-05 14:00:17 -07:00
write_callback.h Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
write_callback_test.cc Move slow valgrind tests behind -DROCKSDB_FULL_VALGRIND_RUN (#8475) 2021-07-07 11:14:05 -07:00
write_controller.cc Revamp WriteController (#8064) 2021-03-18 09:47:31 -07:00
write_controller.h Revamp WriteController (#8064) 2021-03-18 09:47:31 -07:00
write_controller_test.cc Revamp WriteController (#8064) 2021-03-18 09:47:31 -07:00
write_thread.cc Stall writes in WriteBufferManager when memory_usage exceeds buffer_size (#7898) 2021-04-21 13:54:02 -07:00
write_thread.h typo: fix typo in db/write_thread's state (#8423) 2021-06-18 17:14:51 -07:00