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Feng Zhu da9274574f Use IterKey instead of string in Block::Iter to reduce malloc 
Summary:
  Modify a functioin TrimAppend in dbformat.h: IterKey. Write a test for it in dbformat_test
  Use IterKey in block::Iter to replace std::string to reduce malloc.

  Evaluate it using perf record.
  malloc: 4.26% -> 2.91%
  free: 3.61% -> 3.08%

Test Plan:
  make all check
  ./valgrind db_test dbformat_test

Reviewers: ljin, haobo, yhchiang, dhruba, igor, sdong

Reviewed By: sdong

Differential Revision: https://reviews.facebook.net/D20433
2014-07-23 12:31:11 -07:00
..
adaptive_table_factory.cc Change order of parameters in adaptive table factory 2014-06-18 07:04:37 +02:00
adaptive_table_factory.h Change order of parameters in adaptive table factory 2014-06-18 07:04:37 +02:00
block.cc Use IterKey instead of string in Block::Iter to reduce malloc 2014-07-23 12:31:11 -07:00
block.h [RocksDB] Reduce memory footprint of the blockbased table hash index. 2014-06-18 18:16:07 -07:00
block_based_table_builder.cc Fix compressed cache 2014-07-16 06:45:49 -07:00
block_based_table_builder.h Don't compress block bigger than 2GB 2014-06-09 12:26:09 -07:00
block_based_table_factory.cc Materialize the hash index 2014-05-15 14:09:03 -07:00
block_based_table_factory.h Materialize the hash index 2014-05-15 14:09:03 -07:00
block_based_table_reader.cc Remove seek compaction 2014-06-20 10:23:02 +02:00
block_based_table_reader.h Remove seek compaction 2014-06-20 10:23:02 +02:00
block_builder.cc
block_builder.h
block_hash_index.cc Materialize the hash index 2014-05-15 14:09:03 -07:00
block_hash_index.h Materialize the hash index 2014-05-15 14:09:03 -07:00
block_hash_index_test.cc Materialize the hash index 2014-05-15 14:09:03 -07:00
block_prefix_index.cc [RocksDB] Fix unit test 2014-06-19 01:37:21 -07:00
block_prefix_index.h [RocksDB] Reduce memory footprint of the blockbased table hash index. 2014-06-18 18:16:07 -07:00
block_test.cc Materialize the hash index 2014-05-15 14:09:03 -07:00
bloom_block.cc Adding option to save PlainTable index and bloom filter in SST file. 2014-07-18 16:58:13 -07:00
bloom_block.h Adding option to save PlainTable index and bloom filter in SST file. 2014-07-18 16:58:13 -07:00
cuckoo_table_builder.cc Fixed a compile error of cuckoo_table_builder. 2014-07-21 15:17:09 -07:00
cuckoo_table_builder.h Fixed a compile error of cuckoo_table_builder. 2014-07-21 15:17:09 -07:00
cuckoo_table_builder_test.cc Fix signed-unsigned compare error 2014-07-22 15:35:07 -04:00
cuckoo_table_factory.h Adding a new SST table builder based on Cuckoo Hashing 2014-07-21 13:26:09 -07:00
filter_block.cc Consolidate SliceTransform object ownership 2014-03-10 12:56:46 -07:00
filter_block.h
filter_block_test.cc
flush_block_policy.cc
format.cc Fix iOS compile 2014-05-07 17:48:31 -07:00
format.h xxHash 2014-05-01 14:09:32 -04:00
iter_heap.h Turn on -Wmissing-prototypes 2014-04-09 21:17:14 -07:00
iterator.cc In DB::NewIterator(), try to allocate the whole iterator tree in an arena 2014-06-02 17:44:57 -07:00
iterator_wrapper.h In DB::NewIterator(), try to allocate the whole iterator tree in an arena 2014-06-02 17:44:57 -07:00
merger.cc In DB::NewIterator(), try to allocate the whole iterator tree in an arena 2014-06-02 17:44:57 -07:00
merger.h In DB::NewIterator(), try to allocate the whole iterator tree in an arena 2014-06-02 17:44:57 -07:00
meta_blocks.cc Adding option to save PlainTable index and bloom filter in SST file. 2014-07-18 16:58:13 -07:00
meta_blocks.h Adding option to save PlainTable index and bloom filter in SST file. 2014-07-18 16:58:13 -07:00
plain_table_builder.cc Adding option to save PlainTable index and bloom filter in SST file. 2014-07-18 16:58:13 -07:00
plain_table_builder.h Adding option to save PlainTable index and bloom filter in SST file. 2014-07-18 16:58:13 -07:00
plain_table_factory.cc Adding option to save PlainTable index and bloom filter in SST file. 2014-07-18 16:58:13 -07:00
plain_table_factory.h Adding option to save PlainTable index and bloom filter in SST file. 2014-07-18 16:58:13 -07:00
plain_table_index.cc Fix db_bench 2014-07-21 10:31:33 -07:00
plain_table_index.h Fix db_bench 2014-07-21 10:31:33 -07:00
plain_table_key_coding.cc initialize decoded_internal_key_valid 2014-07-03 23:13:08 -07:00
plain_table_key_coding.h fix make shared_lib compilation error 2014-06-19 10:12:26 -07:00
plain_table_reader.cc Fix db_bench 2014-07-21 10:31:33 -07:00
plain_table_reader.h Fix clang compiler warnings 2014-07-20 22:57:20 +08:00
table_builder.h
table_properties.cc Fix SIGFAULT when running sst_dump on v2.6 db 2014-04-21 17:49:47 -07:00
table_reader.h Remove seek compaction 2014-06-20 10:23:02 +02:00
table_reader_bench.cc Add PlainTableOptions 2014-07-18 00:08:38 -07:00
table_test.cc Add PlainTableOptions 2014-07-18 00:08:38 -07:00
two_level_iterator.cc In DB::NewIterator(), try to allocate the whole iterator tree in an arena 2014-06-02 17:44:57 -07:00
two_level_iterator.h In DB::NewIterator(), try to allocate the whole iterator tree in an arena 2014-06-02 17:44:57 -07:00