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Islam AbdelRahman b49b92cf28 Introduce Read amplification bitmap (read amp statistics) 
Summary:
Add ReadOptions::read_amp_bytes_per_bit option which allow us to create a bitmap for every data block we read
the bitmap will contain (block_size / read_amp_bytes_per_bit) bits.

We will use this bitmap to mark which bytes have been used of the block so we can calculate the read amplification

Test Plan: added new tests

Reviewers: andrewkr, yhchiang, sdong

Reviewed By: sdong

Subscribers: yiwu, leveldb, march, andrewkr, dhruba

Differential Revision: https://reviews.facebook.net/D58707
2016-08-26 18:55:58 -07:00
..
dump Updated all copyright headers to the new format. 2016-02-09 15:12:00 -08:00
rdb fix typos in comments 2015-12-11 01:54:48 +09:00
auto_sanity_test.sh fix typos in comments 2015-12-11 01:54:48 +09:00
benchmark_leveldb.sh Add scripts to run leveldb benchmark 2015-04-27 19:32:56 -07:00
benchmark.sh Initial script for the new regression test 2016-05-09 13:32:57 -07:00
check_format_compatible.sh Fetch branches from github for format compatibility test 2016-06-10 13:17:14 -07:00
db_bench_tool_test.cc Change options memtable_prefix_bloom_huge_page_tlb_size => memtable_huge_page_size and cover huge page to memtable too 2016-07-26 18:15:11 -07:00
db_bench_tool.cc Introduce Read amplification bitmap (read amp statistics) 2016-08-26 18:55:58 -07:00
db_bench.cc Initial script for the new regression test 2016-05-09 13:32:57 -07:00
db_crashtest.py Disable ClockCache db_crashtest 2016-08-24 14:19:05 -07:00
db_repl_stress.cc Updated all copyright headers to the new format. 2016-02-09 15:12:00 -08:00
db_sanity_test.cc Fix clang analyzer errors 2016-07-08 17:50:51 -07:00
db_stress.cc Introduce ClockCache 2016-08-19 12:28:19 -07:00
dbench_monitor Added simple monitoring script to monitor overusage of memory in db_bench 2015-02-11 18:40:11 -08:00
Dockerfile adding docker build script and dockerfile 2015-05-22 16:03:39 -07:00
generate_random_db.sh Script to check whether RocksDB can read DB generated by previous releases and vice versa 2015-04-08 16:04:59 -07:00
ldb_cmd_impl.h ldb restore subcommand 2016-07-26 11:13:26 -07:00
ldb_cmd_test.cc [ldb] Export ldb_cmd*.h 2016-05-06 16:09:09 -07:00
ldb_cmd.cc ldb restore subcommand 2016-07-26 11:13:26 -07:00
ldb_test.py ldb to support --column_family option 2016-01-25 14:58:18 -08:00
ldb_tool.cc ldb restore subcommand 2016-07-26 11:13:26 -07:00
ldb.cc Updated all copyright headers to the new format. 2016-02-09 15:12:00 -08:00
pflag Added simple monitoring script to monitor overusage of memory in db_bench 2015-02-11 18:40:11 -08:00
reduce_levels_test.cc [ldb] Templatize the Selector 2016-05-13 12:12:39 -07:00
regression_test.sh Improve regression_test.sh 2016-06-28 14:10:24 -07:00
rocksdb_dump_test.sh Update dump_tool and undump_tool to accept Options 2015-10-05 19:49:48 -07:00
run_flash_bench.sh Update benchmarks used to measure subcompaction performance 2016-03-04 12:32:11 -08:00
run_leveldb.sh Add scripts to run leveldb benchmark 2015-04-27 19:32:56 -07:00
sample-dump.dmp First version of rocksdb_dump and rocksdb_undump. 2015-06-19 16:24:36 -07:00
sst_dump_test.cc Shared dictionary compression using reference block 2016-04-27 17:36:03 -07:00
sst_dump_tool_imp.h Adding pin_l0_filter_and_index_blocks_in_cache feature and related fixes. 2016-04-01 10:42:39 -07:00
sst_dump_tool.cc New Statistics to track Compression/Decompression (#1197) 2016-07-19 09:44:03 -07:00
sst_dump.cc Updated all copyright headers to the new format. 2016-02-09 15:12:00 -08:00
verify_random_db.sh Script to check whether RocksDB can read DB generated by previous releases and vice versa 2015-04-08 16:04:59 -07:00
write_stress_runner.py Write stress test 2015-10-28 16:15:07 -07:00
write_stress.cc Updated all copyright headers to the new format. 2016-02-09 15:12:00 -08:00