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Zhongyi Xie f95a5b2464 Avoid unnecessary big for-loop when reporting ticker stats stored in GetContext (#3490) 
Summary:
Currently in `Version::Get` when reporting ticker stats stored in `GetContext`, there is a big for-loop through all `Ticker` which adds unnecessary cost to overall CPU usage. We can optimize by storing only ticker values that are used in `Get()` calls in a new struct `GetContextStats` since only a small fraction of all tickers are used in `Get()` calls. For comparison, with the new approach we only need to visit 17 values while old approach will require visiting 100+ `Ticker`
Pull Request resolved: https://github.com/facebook/rocksdb/pull/3490

Differential Revision: D6969154

Pulled By: miasantreble

fbshipit-source-id: fc27072965a3a94125a3e6883d20dafcf5b84029
2018-07-20 16:58:13 -07:00
..
adaptive_table_factory.cc
Comment out unused variables
2018-03-05 13:13:41 -08:00
adaptive_table_factory.h
Comment out unused variables
2018-03-05 13:13:41 -08:00
block_based_filter_block_test.cc
Move prefix_extractor to MutableCFOptions
2018-05-21 14:43:11 -07:00
block_based_filter_block.cc
PrefixMayMatch: remove unnecessary check for prefix_extractor_ (#4067)
2018-06-27 20:42:43 -07:00
block_based_filter_block.h
Move prefix_extractor to MutableCFOptions
2018-05-21 14:43:11 -07:00
block_based_table_builder.cc
Reformatting some recent changes (#4161)
2018-07-20 14:43:38 -07:00
block_based_table_builder.h
Write properties metablock last in block-based tables (#4158)
2018-07-20 09:11:59 -07:00
block_based_table_factory.cc
BlockBasedTableReader: automatically adjust tail prefetch size (#4156)
2018-07-20 14:43:37 -07:00
block_based_table_factory.h
BlockBasedTableReader: automatically adjust tail prefetch size (#4156)
2018-07-20 14:43:37 -07:00
block_based_table_reader.cc
Avoid unnecessary big for-loop when reporting ticker stats stored in GetContext (#3490)
2018-07-20 16:58:13 -07:00
block_based_table_reader.h
BlockBasedTableReader: automatically adjust tail prefetch size (#4156)
2018-07-20 14:43:37 -07:00
block_builder.cc
Change RocksDB License
2017-07-15 16:11:23 -07:00
block_builder.h
Change RocksDB License
2017-07-15 16:11:23 -07:00
block_fetcher.cc
Fix a bug caused by not copying the block trailer. (#4096)
2018-07-06 13:12:39 -07:00
block_fetcher.h
Pin mmap files in ReadOnlyDB (#4053)
2018-06-27 17:13:34 -07:00
block_prefix_index.cc
Change RocksDB License
2017-07-15 16:11:23 -07:00
block_prefix_index.h
Change RocksDB License
2017-07-15 16:11:23 -07:00
block_test.cc
Separate some IndexBlockIter logic from BlockIter (#4136)
2018-07-16 10:13:18 -07:00
block.cc
Refactor IndexBlockIter (#4141)
2018-07-16 17:13:10 -07:00
block.h
Refactor IndexBlockIter (#4141)
2018-07-16 17:13:10 -07:00
bloom_block.cc
Change RocksDB License
2017-07-15 16:11:23 -07:00
bloom_block.h
Change RocksDB License
2017-07-15 16:11:23 -07:00
cleanable_test.cc
Change RocksDB License
2017-07-15 16:11:23 -07:00
cuckoo_table_builder_test.cc
Per-thread unique test db names (#4135)
2018-07-13 17:27:39 -07:00
cuckoo_table_builder.cc
Enable MSVC W4 with a few exceptions. Fix warnings and bugs
2017-10-19 10:57:12 -07:00
cuckoo_table_builder.h
Change RocksDB License
2017-07-15 16:11:23 -07:00
cuckoo_table_factory.cc
Comment out unused variables
2018-03-05 13:13:41 -08:00
cuckoo_table_factory.h
comment unused parameters to turn on -Wunused-parameter flag
2018-04-12 17:59:16 -07:00
cuckoo_table_reader_test.cc
Per-thread unique test db names (#4135)
2018-07-13 17:27:39 -07:00
cuckoo_table_reader.cc
Make BlockBasedTableIterator compaction-aware (#4048)
2018-06-25 13:19:27 -07:00
cuckoo_table_reader.h
Make BlockBasedTableIterator compaction-aware (#4048)
2018-06-25 13:19:27 -07:00
filter_block.h
use user_key and iterate_upper_bound to determine compatibility of bloom filters (#3899)
2018-06-26 15:57:26 -07:00
flush_block_policy.cc
Align SST file data blocks to avoid spanning multiple pages
2018-03-26 20:26:10 -07:00
format.cc
run make format for PR 3838 (#3954)
2018-06-05 12:58:02 -07:00
format.h
Charging block cache more accurately (#4073)
2018-06-29 08:57:20 -07:00
full_filter_bits_builder.h
Skip duplicate bloom keys when whole_key and prefix are mixed
2018-04-24 10:58:16 -07:00
full_filter_block_test.cc
Move prefix_extractor to MutableCFOptions
2018-05-21 14:43:11 -07:00
full_filter_block.cc
Charging block cache more accurately (#4073)
2018-06-29 08:57:20 -07:00
full_filter_block.h
Charging block cache more accurately (#4073)
2018-06-29 08:57:20 -07:00
get_context.cc
Avoid unnecessary big for-loop when reporting ticker stats stored in GetContext (#3490)
2018-07-20 16:58:13 -07:00
get_context.h
Avoid unnecessary big for-loop when reporting ticker stats stored in GetContext (#3490)
2018-07-20 16:58:13 -07:00
index_builder.cc
Test range deletions with more configurations (#4021)
2018-07-11 15:57:49 -07:00
index_builder.h
Test range deletions with more configurations (#4021)
2018-07-11 15:57:49 -07:00
internal_iterator.h
Change and clarify the relationship between Valid(), status() and Seek*() for all iterators. Also fix some bugs
2018-05-17 02:56:56 -07:00
iter_heap.h
Make InternalKeyComparator final and directly use it in merging iterator
2017-09-11 12:04:21 -07:00
iterator_wrapper.h
Change and clarify the relationship between Valid(), status() and Seek*() for all iterators. Also fix some bugs
2018-05-17 02:56:56 -07:00
iterator.cc
Comment out unused variables
2018-03-05 13:13:41 -08:00
merger_test.cc
Make InternalKeyComparator final and directly use it in merging iterator
2017-09-11 12:04:21 -07:00
merging_iterator.cc
Fix regression bug of Prev() with upper bound (#3989)
2018-06-12 16:57:36 -07:00
merging_iterator.h
fix DBImpl::NewInternalIterator super-version leak on failure
2017-10-11 14:57:43 -07:00
meta_blocks.cc
Separate some IndexBlockIter logic from BlockIter (#4136)
2018-07-16 10:13:18 -07:00
meta_blocks.h
Should only decode restart points for uncompressed blocks (#3996)
2018-06-15 19:26:58 -07:00
mock_table.cc
Make BlockBasedTableIterator compaction-aware (#4048)
2018-06-25 13:19:27 -07:00
mock_table.h
Make BlockBasedTableIterator compaction-aware (#4048)
2018-06-25 13:19:27 -07:00
partitioned_filter_block_test.cc
Pin mmap files in ReadOnlyDB (#4053)
2018-06-27 17:13:34 -07:00
partitioned_filter_block.cc
Refactor BlockIter (#4121)
2018-07-12 17:27:31 -07:00
partitioned_filter_block.h
Extend format 3 to partitioned index/filters (#3958)
2018-06-06 16:58:16 -07:00
persistent_cache_helper.cc
comment unused parameters to turn on -Wunused-parameter flag
2018-04-12 17:59:16 -07:00
persistent_cache_helper.h
Change RocksDB License
2017-07-15 16:11:23 -07:00
persistent_cache_options.h
Change RocksDB License
2017-07-15 16:11:23 -07:00
plain_table_builder.cc
Move prefix_extractor to MutableCFOptions
2018-05-21 14:43:11 -07:00
plain_table_builder.h
Move prefix_extractor to MutableCFOptions
2018-05-21 14:43:11 -07:00
plain_table_factory.cc
Move prefix_extractor to MutableCFOptions
2018-05-21 14:43:11 -07:00
plain_table_factory.h
Comment out unused variables
2018-03-05 13:13:41 -08:00
plain_table_index.cc
Change RocksDB License
2017-07-15 16:11:23 -07:00
plain_table_index.h
Move prefix_extractor to MutableCFOptions
2018-05-21 14:43:11 -07:00
plain_table_key_coding.cc
Comment out unused variables
2018-03-05 13:13:41 -08:00
plain_table_key_coding.h
Change RocksDB License
2017-07-15 16:11:23 -07:00
plain_table_reader.cc
Make BlockBasedTableIterator compaction-aware (#4048)
2018-06-25 13:19:27 -07:00
plain_table_reader.h
Make BlockBasedTableIterator compaction-aware (#4048)
2018-06-25 13:19:27 -07:00
scoped_arena_iterator.h
Change RocksDB License
2017-07-15 16:11:23 -07:00
sst_file_writer_collectors.h
Comment out unused variables
2018-03-05 13:13:41 -08:00
sst_file_writer.cc
Support range deletion tombstones in IngestExternalFile SSTs (#3778)
2018-07-13 22:43:09 -07:00
table_builder.h
Pin mmap files in ReadOnlyDB (#4053)
2018-06-27 17:13:34 -07:00
table_properties_internal.h
Eliminate some redundant block reads.
2018-01-10 17:11:58 -08:00
table_properties.cc
Add table property tracking number of range deletions (#4016)
2018-06-26 20:27:35 -07:00
table_reader_bench.cc
Per-thread unique test db names (#4135)
2018-07-13 17:27:39 -07:00
table_reader.h
Make BlockBasedTableIterator compaction-aware (#4048)
2018-06-25 13:19:27 -07:00
table_test.cc
Reformatting some recent changes (#4161)
2018-07-20 14:43:38 -07:00
two_level_iterator.cc
Change and clarify the relationship between Valid(), status() and Seek*() for all iterators. Also fix some bugs
2018-05-17 02:56:56 -07:00
two_level_iterator.h
fix memory leak in two_level_iterator
2018-04-15 17:26:26 -07:00