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edcbb36944
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Siying Dong edcbb36944 Three code-level optimization to Iterator::Next() 
Summary:
Three small optimizations:
(1) iter_->IsKeyPinned() shouldn't be called if read_options.pin_data is not true. This may trigger function call all the way down the iterator tree.
(2) reuse the iterator key object in DBIter::FindNextUserEntryInternal(). The constructor of the class has some overheads.
(3) Move the switching direction logic in MergingIterator::Next() to a separate function.

These three in total improves readseq performance by about 3% in my benchmark setting.
Closes https://github.com/facebook/rocksdb/pull/2880

Differential Revision: D5829252

Pulled By: siying

fbshipit-source-id: 991aea10c6d6c3b43769cb4db168db62954ad1e3
2017-09-14 17:57:31 -07:00
..
builder.cc Revert "comment out unused parameters" 2017-07-21 18:26:26 -07:00
builder.h Change RocksDB License 2017-07-15 16:11:23 -07:00
c_test.c Added save points for transactions C API 2017-09-14 14:18:59 -07:00
c.cc Added save points for transactions C API 2017-09-14 14:18:59 -07:00
column_family_test.cc Revert "comment out unused parameters" 2017-07-21 18:26:26 -07:00
column_family.cc rename stall-related internal stats 2017-09-07 18:26:18 -07:00
column_family.h Change RocksDB License 2017-07-15 16:11:23 -07:00
compact_files_test.cc Revert "comment out unused parameters" 2017-07-21 18:26:26 -07:00
compacted_db_impl.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
compacted_db_impl.h Revert "comment out unused parameters" 2017-07-21 18:26:26 -07:00
compaction_iteration_stats.h add counter for deletion dropping optimization 2017-08-19 14:10:08 -07:00
compaction_iterator_test.cc Allow merge operator to be called even with a single operand 2017-08-16 23:42:00 -07:00
compaction_iterator.cc add counter for deletion dropping optimization 2017-08-19 14:10:08 -07:00
compaction_iterator.h Revert "comment out unused parameters" 2017-07-21 18:26:26 -07:00
compaction_job_stats_test.cc Revert "comment out unused parameters" 2017-07-21 18:26:26 -07:00
compaction_job_test.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
compaction_job.cc Fix CLANG Analyze 2017-09-07 14:28:06 -07:00
compaction_job.h Change RocksDB License 2017-07-15 16:11:23 -07:00
compaction_picker_test.cc Fix FIFO compaction picker test 2017-07-26 12:12:26 -07:00
compaction_picker_universal.cc update scores after picking universal compaction 2017-08-16 18:42:33 -07:00
compaction_picker_universal.h Change RocksDB License 2017-07-15 16:11:23 -07:00
compaction_picker.cc fix hanging after CompactFiles with L0 overlap 2017-09-13 15:41:38 -07:00
compaction_picker.h fix hanging after CompactFiles with L0 overlap 2017-09-13 15:41:38 -07:00
compaction.cc Fix false removal of tombstone issue in FIFO and kCompactionStyleNone 2017-08-15 13:02:19 -07:00
compaction.h Change RocksDB License 2017-07-15 16:11:23 -07:00
comparator_db_test.cc Revert "comment out unused parameters" 2017-07-21 18:26:26 -07:00
convenience.cc add VerifyChecksum() to db.h 2017-08-09 15:58:13 -07:00
corruption_test.cc fix corruption_test valgrind 2017-08-11 12:29:14 -07:00
cuckoo_table_db_test.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
db_basic_test.cc support disabling checksum in block-based table 2017-08-23 19:40:47 -07:00
db_block_cache_test.cc Revert "comment out unused parameters" 2017-07-21 18:26:26 -07:00
db_bloom_filter_test.cc Revert "comment out unused parameters" 2017-07-21 18:26:26 -07:00
db_compaction_filter_test.cc Revert "comment out unused parameters" 2017-07-21 18:26:26 -07:00
db_compaction_test.cc fix hanging after CompactFiles with L0 overlap 2017-09-13 15:41:38 -07:00
db_dynamic_level_test.cc Revert "comment out unused parameters" 2017-07-21 18:26:26 -07:00
db_encryption_test.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
db_filesnapshot.cc Remove some left-over BSD headers 2017-07-18 11:56:57 -07:00
db_flush_test.cc Revert "comment out unused parameters" 2017-07-21 18:26:26 -07:00
db_impl_compaction_flush.cc fix hanging after CompactFiles with L0 overlap 2017-09-13 15:41:38 -07:00
db_impl_debug.cc Introduce bottom-pri thread pool for large universal compactions 2017-08-03 15:43:29 -07:00
db_impl_experimental.cc Fix naming in InternalKey 2017-09-12 17:17:42 -07:00
db_impl_files.cc Fix CLANG Analyze 2017-09-07 14:28:06 -07:00
db_impl_open.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
db_impl_readonly.cc Add Iterator::Refresh() 2017-07-24 10:54:37 -07:00
db_impl_readonly.h Revert "comment out unused parameters" 2017-07-21 18:26:26 -07:00
db_impl_write.cc Fix missing BYTES_PER_WRITE for pipeline write 2017-09-11 11:41:27 -07:00
db_impl.cc Fix naming in InternalKey 2017-09-12 17:17:42 -07:00
db_impl.h write-prepared txn: call IsInSnapshot 2017-09-11 09:14:48 -07:00
db_info_dumper.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
db_info_dumper.h Change RocksDB License 2017-07-15 16:11:23 -07:00
db_inplace_update_test.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
db_io_failure_test.cc Fix LITE unit tests 2017-07-26 21:11:47 -07:00
db_iter_test.cc Add Iterator::Refresh() 2017-07-24 10:54:37 -07:00
db_iter.cc Three code-level optimization to Iterator::Next() 2017-09-14 17:57:31 -07:00
db_iter.h Add Iterator::Refresh() 2017-07-24 10:54:37 -07:00
db_iterator_test.cc perf_context measure user bytes read 2017-08-18 11:43:33 -07:00
db_log_iter_test.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
db_memtable_test.cc Revert "comment out unused parameters" 2017-07-21 18:26:26 -07:00
db_merge_operator_test.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
db_options_test.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
db_properties_test.cc Revert "comment out unused parameters" 2017-07-21 18:26:26 -07:00
db_range_del_test.cc Fix wrong smallest key of delete range tombstones 2017-08-29 18:41:35 -07:00
db_sst_test.cc Revert "comment out unused parameters" 2017-07-21 18:26:26 -07:00
db_statistics_test.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
db_table_properties_test.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
db_tailing_iter_test.cc Revert "comment out unused parameters" 2017-07-21 18:26:26 -07:00
db_test_util.cc Updated CRC32 Power Optimization Changes 2017-08-31 14:16:30 -07:00
db_test_util.h Revert "comment out unused parameters" 2017-07-21 18:26:26 -07:00
db_test.cc speedup DBTest.EncodeDecompressedBlockSizeTest 2017-09-12 11:26:47 -07:00
db_test2.cc write-prepared txn: call IsInSnapshot 2017-09-11 09:14:48 -07:00
db_universal_compaction_test.cc update scores after picking universal compaction 2017-08-16 18:42:33 -07:00
db_wal_test.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
db_write_test.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
dbformat_test.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
dbformat.cc Two small refactoring for better inlining 2017-09-14 15:41:49 -07:00
dbformat.h Two small refactoring for better inlining 2017-09-14 15:41:49 -07:00
deletefile_test.cc Revert "comment out unused parameters" 2017-07-21 18:26:26 -07:00
event_helpers.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
event_helpers.h Change RocksDB License 2017-07-15 16:11:23 -07:00
experimental.cc Replace dynamic_cast<> 2017-07-28 16:27:16 -07:00
external_sst_file_basic_test.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
external_sst_file_ingestion_job.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
external_sst_file_ingestion_job.h Change RocksDB License 2017-07-15 16:11:23 -07:00
external_sst_file_test.cc Revert "comment out unused parameters" 2017-07-21 18:26:26 -07:00
fault_injection_test.cc Revert "comment out unused parameters" 2017-07-21 18:26:26 -07:00
file_indexer_test.cc Revert "comment out unused parameters" 2017-07-21 18:26:26 -07:00
file_indexer.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
file_indexer.h Change RocksDB License 2017-07-15 16:11:23 -07:00
filename_test.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
flush_job_test.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
flush_job.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
flush_job.h Change RocksDB License 2017-07-15 16:11:23 -07:00
flush_scheduler.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
flush_scheduler.h Change RocksDB License 2017-07-15 16:11:23 -07:00
forward_iterator_bench.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
forward_iterator.cc Revert "comment out unused parameters" 2017-07-21 18:26:26 -07:00
forward_iterator.h Revert "comment out unused parameters" 2017-07-21 18:26:26 -07:00
internal_stats.cc rename stall-related internal stats 2017-09-07 18:26:18 -07:00
internal_stats.h rename stall-related internal stats 2017-09-07 18:26:18 -07:00
job_context.h Change RocksDB License 2017-07-15 16:11:23 -07:00
listener_test.cc Revert "comment out unused parameters" 2017-07-21 18:26:26 -07:00
log_format.h Change RocksDB License 2017-07-15 16:11:23 -07:00
log_reader.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
log_reader.h Change RocksDB License 2017-07-15 16:11:23 -07:00
log_test.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
log_writer.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
log_writer.h Change RocksDB License 2017-07-15 16:11:23 -07:00
malloc_stats.cc Revert "comment out unused parameters" 2017-07-21 18:26:26 -07:00
malloc_stats.h Change RocksDB License 2017-07-15 16:11:23 -07:00
managed_iterator.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
managed_iterator.h Change RocksDB License 2017-07-15 16:11:23 -07:00
manual_compaction_test.cc Revert "comment out unused parameters" 2017-07-21 18:26:26 -07:00
memtable_list_test.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
memtable_list.cc write-prepared txn: call IsInSnapshot 2017-09-11 09:14:48 -07:00
memtable_list.h write-prepared txn: call IsInSnapshot 2017-09-11 09:14:48 -07:00
memtable.cc do not call merge when checking to see if key exists 2017-09-12 12:02:53 -07:00
memtable.h write-prepared txn: call IsInSnapshot 2017-09-11 09:14:48 -07:00
merge_context.h Change RocksDB License 2017-07-15 16:11:23 -07:00
merge_helper_test.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
merge_helper.cc Allow merge operator to be called even with a single operand 2017-08-16 23:42:00 -07:00
merge_helper.h Allow merge operator to be called even with a single operand 2017-08-16 23:42:00 -07:00
merge_operator.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
merge_test.cc Revert "comment out unused parameters" 2017-07-21 18:26:26 -07:00
options_file_test.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
perf_context_test.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
pinned_iterators_manager.h Change RocksDB License 2017-07-15 16:11:23 -07:00
plain_table_db_test.cc Revert "comment out unused parameters" 2017-07-21 18:26:26 -07:00
prefix_test.cc Revert "comment out unused parameters" 2017-07-21 18:26:26 -07:00
range_del_aggregator_test.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
range_del_aggregator.cc Two small refactoring for better inlining 2017-09-14 15:41:49 -07:00
range_del_aggregator.h Two small refactoring for better inlining 2017-09-14 15:41:49 -07:00
read_callback.h write-prepared txn: call IsInSnapshot 2017-09-11 09:14:48 -07:00
repair_test.cc Try to repair db with wal_dir option, avoid leak some WAL files 2017-08-08 10:47:57 -07:00
repair.cc Try to repair db with wal_dir option, avoid leak some WAL files 2017-08-08 10:47:57 -07:00
snapshot_impl.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
snapshot_impl.h WriteAtPrepare: Efficient read from snapshot list 2017-08-26 01:00:38 -07:00
table_cache.cc fix db get/write stats 2017-07-31 12:12:03 -07:00
table_cache.h Change RocksDB License 2017-07-15 16:11:23 -07:00
table_properties_collector_test.cc Revert "comment out unused parameters" 2017-07-21 18:26:26 -07:00
table_properties_collector.cc Revert "comment out unused parameters" 2017-07-21 18:26:26 -07:00
table_properties_collector.h Revert "comment out unused parameters" 2017-07-21 18:26:26 -07:00
transaction_log_impl.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
transaction_log_impl.h Change RocksDB License 2017-07-15 16:11:23 -07:00
version_builder_test.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
version_builder.cc Allow DB reopen with reduced options.num_levels 2017-08-24 16:10:54 -07:00
version_builder.h Allow DB reopen with reduced options.num_levels 2017-08-24 16:10:54 -07:00
version_edit_test.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
version_edit.cc Revert "comment out unused parameters" 2017-07-21 18:26:26 -07:00
version_edit.h Change RocksDB License 2017-07-15 16:11:23 -07:00
version_set_test.cc Revert "comment out unused parameters" 2017-07-21 18:26:26 -07:00
version_set.cc Fix naming in InternalKey 2017-09-12 17:17:42 -07:00
version_set.h write-prepared txn: call IsInSnapshot 2017-09-11 09:14:48 -07:00
wal_manager_test.cc Revert "comment out unused parameters" 2017-07-21 18:26:26 -07:00
wal_manager.cc Replace dynamic_cast<> 2017-07-28 16:27:16 -07:00
wal_manager.h Change RocksDB License 2017-07-15 16:11:23 -07:00
write_batch_base.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
write_batch_internal.h Change RocksDB License 2017-07-15 16:11:23 -07:00
write_batch_test.cc Gcc 7 ParsedInternalKey replace memset with clear function. 2017-07-24 11:31:15 -07:00
write_batch.cc Update WritePrepared with the pseudo code 2017-08-16 16:57:47 -07:00
write_callback_test.cc Exclude incompatible options in test 2017-09-12 14:58:46 -07:00
write_callback.h Change RocksDB License 2017-07-15 16:11:23 -07:00
write_controller_test.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
write_controller.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
write_controller.h Change RocksDB License 2017-07-15 16:11:23 -07:00
write_thread.cc Fix the overflow bug in AwaitState 2017-08-03 10:43:28 -07:00
write_thread.h fix comment 2017-08-09 22:57:01 -07:00