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rocksdb/db
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sdong b405cb886b PlainTableIterator not to store copied key in std::string 
Summary:
Move PlainTableIterator's copied key from std::string local buffer to avoid paying the extra costs in std::string related to sharing. Reuse the same buffer class in DbIter. Move the class to dbformat.h.

This patch improves iterator performance significantly. Running this benchmark:

./table_reader_bench --num_keys2=17 --iterator --plain_table --time_unit=nanosecond

The average latency is improved to about 750 nanoseconds from 1100 nanoseconds.

Test Plan:
Add a unit test.
make all check

Reviewers: haobo, ljin

Reviewed By: haobo

CC: igor, yhchiang, dhruba, leveldb

Differential Revision: https://reviews.facebook.net/D17547
2014-04-07 22:18:09 -07:00
..
builder.cc
Enhance partial merge to support multiple arguments
2014-03-24 17:57:13 -07:00
builder.h
[Performance Branch] PlainTable to encode rows with seqID 0, value type using 1 internal byte.
2014-02-03 12:19:30 -08:00
c_test.c
[C-API] added "rocksdb_options_set_plain_table_factory" to make it possible to use plain table factory
2014-04-03 10:47:37 +02:00
c.cc
[C-API] implemented more options
2014-04-03 10:47:37 +02:00
compaction_picker.cc
initialize candidate count
2014-04-03 11:45:44 -07:00
compaction_picker.h
Buffer info logs when picking compactions and write them out after releasing the mutex
2014-03-05 15:36:32 -08:00
compaction.cc
Don't compact with zero input files
2014-03-19 16:01:25 -07:00
compaction.h
CompactionContext to include is_manual_compaction
2014-02-12 12:24:18 -08:00
corruption_test.cc
Some small cleaning up to make some compiling environment happy
2014-03-26 18:11:41 -07:00
db_bench.cc
make hash_link_list Node's key space consecutively followed at the end
2014-04-04 15:37:28 -07:00
db_filesnapshot.cc
Fix MacOS errors
2014-04-03 16:04:34 -07:00
db_impl_readonly.cc
Sanity check on Open
2014-03-20 14:18:29 -07:00
db_impl_readonly.h
CompactRange() to return status
2014-01-23 16:41:46 -08:00
db_impl.cc
Create log::Writer out of DB Mutex
2014-04-04 15:46:28 -07:00
db_impl.h
Create log::Writer out of DB Mutex
2014-04-04 15:46:28 -07:00
db_iter.cc
PlainTableIterator not to store copied key in std::string
2014-04-07 22:18:09 -07:00
db_iter.h
Add appropriate LICENSE and Copyright message.
2013-10-16 17:48:41 -07:00
db_stats_logger.cc
Move functions from VersionSet to Version
2014-01-15 16:18:04 -08:00
db_test.cc
[RocksDB] Fix a race condition in GetSortedWalFiles
2014-04-02 22:12:29 -07:00
dbformat_test.cc
Add appropriate LICENSE and Copyright message.
2013-10-16 17:48:41 -07:00
dbformat.cc
DBIter to use static allocated char array for saved_key_ (if it is not too long)
2014-04-01 16:43:11 -07:00
dbformat.h
PlainTableIterator not to store copied key in std::string
2014-04-07 22:18:09 -07:00
deletefile_test.cc
Start DeleteFileTest with clean plate
2013-11-15 16:30:23 -08:00
filename_test.cc
Add appropriate LICENSE and Copyright message.
2013-10-16 17:48:41 -07:00
filename.cc
Unify DeleteFile and DeleteWalFiles
2013-10-25 08:32:14 -07:00
filename.h
Unify DeleteFile and DeleteWalFiles
2013-10-25 08:32:14 -07:00
internal_stats.cc
[RocksDB] Add db property "rocksdb.cur-size-active-mem-table"
2014-03-27 15:14:04 -07:00
internal_stats.h
[RocksDB] Add db property "rocksdb.cur-size-active-mem-table"
2014-03-27 15:14:04 -07:00
log_format.h
Some minor refactoring on the code
2014-01-02 16:32:31 -08:00
log_reader.cc
Make Log::Reader more robust
2014-02-28 13:19:47 -08:00
log_reader.h
Fix UnmarkEOF for partial blocks
2014-01-27 14:49:10 -08:00
log_test.cc
Make it compile on Debian/GCC 4.7
2014-03-14 22:44:35 +00:00
log_writer.cc
Add appropriate LICENSE and Copyright message.
2013-10-16 17:48:41 -07:00
log_writer.h
Add appropriate LICENSE and Copyright message.
2013-10-16 17:48:41 -07:00
memtable_list.cc
Move several more logging inside DB mutex to log buffer
2014-04-03 10:47:18 -07:00
memtable_list.h
Move several more logging inside DB mutex to log buffer
2014-04-03 10:47:18 -07:00
memtable.cc
make hash_link_list Node's key space consecutively followed at the end
2014-04-04 15:37:28 -07:00
memtable.h
A heuristic way to check if a memtable is full
2014-03-12 16:40:14 -07:00
merge_context.h
Enhance partial merge to support multiple arguments
2014-03-24 17:57:13 -07:00
merge_helper.cc
Fix the bug in MergeUtil which causes mixing values of different keys.
2014-03-27 16:15:25 -07:00
merge_helper.h
[rocksdb] new CompactionFilterV2 API
2014-03-24 20:47:53 -07:00
merge_operator.cc
Some small cleaning up to make some compiling environment happy
2014-03-26 18:11:41 -07:00
merge_test.cc
Enhance partial merge to support multiple arguments
2014-03-24 17:57:13 -07:00
perf_context_test.cc
Missing includes
2014-03-14 13:02:20 -07:00
plain_table_db_test.cc
PlainTableIterator not to store copied key in std::string
2014-04-07 22:18:09 -07:00
prefix_filter_iterator.h
Moving Some includes from options.h to forward declaration
2014-01-24 17:16:22 -08:00
prefix_test.cc
Fix HashSkipList and HashLinkedList SIGSEGV
2014-03-14 10:02:04 -07:00
repair.cc
Optimize fallocation
2014-03-17 21:52:14 -07:00
simple_table_db_test.cc
Make table properties shareable
2014-02-07 19:26:49 -08:00
skiplist_test.cc
Clean up arena API
2014-01-30 22:10:10 -08:00
skiplist.h
Consolidate SliceTransform object ownership
2014-03-10 12:56:46 -07:00
snapshot.h
Add appropriate LICENSE and Copyright message.
2013-10-16 17:48:41 -07:00
table_cache.cc
When Options.max_num_files=-1, non level0 files also by pass table cache
2014-03-25 18:40:52 -07:00
table_cache.h
Fix valgrind error caused by FileMetaData as two level iterator's index block handle
2014-04-02 14:38:28 -07:00
table_properties_collector_test.cc
Fix problem 3 for issue #80
2014-02-11 17:52:18 -08:00
table_properties_collector.cc
Extract metaindex block from block-based table
2013-12-05 16:34:16 -08:00
table_properties_collector.h
Extract metaindex block from block-based table
2013-12-05 16:34:16 -08:00
tailing_iter.cc
Consolidate SliceTransform object ownership
2014-03-10 12:56:46 -07:00
tailing_iter.h
Tailing iterator
2014-01-23 16:26:08 -08:00
transaction_log_impl.cc
Revert "Fix bad merge of D16791 and D16767"
2014-03-12 09:37:43 -07:00
transaction_log_impl.h
Revert "Fix bad merge of D16791 and D16767"
2014-03-12 09:37:43 -07:00
version_edit_test.cc
Remove compaction pointers
2014-01-16 14:06:53 -08:00
version_edit.cc
Don't store version number in MANIFEST
2014-03-31 11:33:09 -07:00
version_edit.h
Don't store version number in MANIFEST
2014-03-31 11:33:09 -07:00
version_set_test.cc
Add appropriate LICENSE and Copyright message.
2013-10-16 17:48:41 -07:00
version_set.cc
Fix valgrind error caused by FileMetaData as two level iterator's index block handle
2014-04-02 14:38:28 -07:00
version_set.h
ComputeCompactionScore in CompactionPicker
2014-03-19 16:52:26 -07:00
write_batch_internal.h
In-place updates for equal keys and similar sized values
2013-10-31 11:27:12 -07:00
write_batch_test.cc
[Performance Branch] PlainTable to encode rows with seqID 0, value type using 1 internal byte.
2014-02-03 12:19:30 -08:00
write_batch.cc
Merge branch 'master' into performance
2014-01-23 16:32:49 -08:00