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haoyuhuang a8975b6245 Block cache tracer: Do not populate block cache trace record when tracing is disabled. (#5510) 
Summary:
This PR makes sure that trace record is not populated when tracing is disabled.

Before this PR:
DB path: [/data/mysql/rocks_regression_tests/OPTIONS-myrocks-40-33-10000000/2019-06-26-13-04-41/db]
readwhilewriting :       9.803 micros/op 1550408 ops/sec;  107.9 MB/s (5000000 of 5000000 found)
Microseconds per read:
Count: 80000000 Average: 9.8045  StdDev: 12.64
Min: 1  Median: 7.5246  Max: 25343
Percentiles: P50: 7.52 P75: 12.10 P99: 37.44 P99.9: 75.07 P99.99: 133.60

After this PR:
DB path: [/data/mysql/rocks_regression_tests/OPTIONS-myrocks-40-33-10000000/2019-06-26-14-08-21/db]
readwhilewriting :       8.723 micros/op 1662882 ops/sec;  115.8 MB/s (5000000 of 5000000 found)
Microseconds per read:
Count: 80000000 Average: 8.7236  StdDev: 12.19
Min: 1  Median: 6.7262  Max: 25229
Percentiles: P50: 6.73 P75: 10.50 P99: 31.54 P99.9: 74.81 P99.99: 132.82
Pull Request resolved: https://github.com/facebook/rocksdb/pull/5510

Differential Revision: D16016428

Pulled By: HaoyuHuang

fbshipit-source-id: 3b3d11e6accf207d18ec2545b802aa01ee65901f
 		2019-06-27 08:34:08 -07:00
..
adaptive Organizing rocksdb/table directory by format 2019-05-30 14:51:11 -07:00
block_based Block cache tracer: Do not populate block cache trace record when tracing is disabled. (#5510) 2019-06-27 08:34:08 -07:00
cuckoo Add more callers for table reader. (#5454) 2019-06-20 14:31:48 -07:00
plain Add more callers for table reader. (#5454) 2019-06-20 14:31:48 -07:00
block_fetcher.cc Add an option to put first key of each sst block in the index (#5289) 2019-06-24 20:54:04 -07:00
block_fetcher.h Combine the read-ahead logic for user reads and compaction reads (#5431) 2019-06-19 14:10:46 -07:00
bloom_block.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
bloom_block.h Disallow customized hash function in DynamicBloom (#4915) 2019-01-24 10:34:30 -08:00
cleanable_test.cc Move test related files under util/ to test_util/ (#5377) 2019-05-30 11:25:51 -07:00
format.cc Add an option to put first key of each sst block in the index (#5289) 2019-06-24 20:54:04 -07:00
format.h Add an option to put first key of each sst block in the index (#5289) 2019-06-24 20:54:04 -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
get_context.cc Add support for timestamp in Get/Put (#5079) 2019-06-05 23:10:47 -07:00
get_context.h Move some memory related files from util/ to memory/ (#5382) 2019-05-30 17:44:09 -07:00
internal_iterator.h Add an option to put first key of each sst block in the index (#5289) 2019-06-24 20:54:04 -07:00
iter_heap.h Make InternalKeyComparator final and directly use it in merging iterator 2017-09-11 12:04:21 -07:00
iterator.cc Add an option to put first key of each sst block in the index (#5289) 2019-06-24 20:54:04 -07:00
iterator_wrapper.h Revert "Reduce iterator key comparison for upper/lower bound check (#5111)" (#5440) 2019-06-11 16:23:41 -07:00
merger_test.cc Move test related files under util/ to test_util/ (#5377) 2019-05-30 11:25:51 -07:00
merging_iterator.cc Revert "Reduce iterator key comparison for upper/lower bound check (#5111)" (#5440) 2019-06-11 16:23:41 -07:00
merging_iterator.h Index value delta encoding (#3983) 2018-08-09 16:58:40 -07:00
meta_blocks.cc Add an option to put first key of each sst block in the index (#5289) 2019-06-24 20:54:04 -07:00
meta_blocks.h Make the 'block read count' performance counters consistent (#5484) 2019-06-18 19:03:24 -07:00
mock_table.cc Add more callers for table reader. (#5454) 2019-06-20 14:31:48 -07:00
mock_table.h Add more callers for table reader. (#5454) 2019-06-20 14:31:48 -07:00
multiget_context.h multiget: fix memory issues due to vector auto resizing (#5279) 2019-05-03 15:58:43 -07:00
persistent_cache_helper.cc Organizing rocksdb/table directory by format 2019-05-30 14:51:11 -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
scoped_arena_iterator.h Change RocksDB License 2017-07-15 16:11:23 -07:00
sst_file_reader.cc Add more callers for table reader. (#5454) 2019-06-20 14:31:48 -07:00
sst_file_reader_test.cc simplify include directive involving inttypes (#5402) 2019-06-06 13:56:07 -07:00
sst_file_writer.cc Move some memory related files from util/ to memory/ (#5382) 2019-05-30 17:44:09 -07:00
sst_file_writer_collectors.h Fix SstFileReader not able to open ingested file (#5097) 2019-03-26 10:25:18 -07:00
table_builder.h Integrate block cache tracer into db_impl (#5433) 2019-06-13 15:43:10 -07:00
table_properties.cc Organizing rocksdb/table directory by format 2019-05-30 14:51:11 -07:00
table_properties_internal.h Index value delta encoding (#3983) 2018-08-09 16:58:40 -07:00
table_reader.h Add more callers for table reader. (#5454) 2019-06-20 14:31:48 -07:00
table_reader_bench.cc Add more callers for table reader. (#5454) 2019-06-20 14:31:48 -07:00
table_reader_caller.h Add more callers for table reader. (#5454) 2019-06-20 14:31:48 -07:00
table_test.cc Add an option to put first key of each sst block in the index (#5289) 2019-06-24 20:54:04 -07:00
two_level_iterator.cc Add an option to put first key of each sst block in the index (#5289) 2019-06-24 20:54:04 -07:00
two_level_iterator.h Add an option to put first key of each sst block in the index (#5289) 2019-06-24 20:54:04 -07:00