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cdad04b051
rocksdb/utilities
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Dmitri Smirnov cdad04b051 Remove double buffering on RandomRead on Windows. 
Summary:
Remove double buffering on RandomRead on Windows.
  With more logic appear in file reader/write Read no longer
  obeys forwarding calls to Windows implementation.
  Previously direct_io (unbuffered) was only available on Windows
  but now is supported as generic.
  We remove intermediate buffering on Windows.
  Remove random_access_max_buffer_size option which was windows specific.
  Non-zero values for that opton introduced unnecessary lock contention.
  Remove Env::EnableReadAhead(), Env::ShouldForwardRawRequest() that are
  no longer necessary.
  Add aligned buffer reads for cases when requested reads exceed read ahead size.
Closes https://github.com/facebook/rocksdb/pull/2105

Differential Revision: D4847770

Pulled By: siying

fbshipit-source-id: 8ab48f8e854ab498a4fd398a6934859792a2788f
2017-04-27 12:30:05 -07:00
..
backupable Reunite checkpoint and backup core logic 2017-04-24 15:06:46 -07:00
blob_db Move some files under util/ to separate dirs 2017-04-05 19:09:16 -07:00
checkpoint Reunite checkpoint and backup core logic 2017-04-24 15:06:46 -07:00
compaction_filters Updated all copyright headers to the new format. 2016-02-09 15:12:00 -08:00
convenience Move auto_roll_logger and filename out of db/ 2017-04-03 18:39:14 -07:00
date_tiered Reduce the number of params needed to construct DBIter 2017-04-10 11:14:14 -07:00
document make all DB::Get overloads virtual 2017-03-30 23:39:14 -07:00
geodb Move auto_roll_logger and filename out of db/ 2017-04-03 18:39:14 -07:00
leveldb_options Updated all copyright headers to the new format. 2016-02-09 15:12:00 -08:00
lua Level-based L0->L0 compaction 2017-04-04 18:09:11 -07:00
memory Disable auto compactions in memory_test and re-enable the test (#1408) 2016-10-19 18:18:42 -07:00
merge_operators Add macros to include file name and line number during Logging 2017-03-15 19:39:12 -07:00
option_change_migration option_change_migration_test: force full compaction when needed 2016-11-15 22:09:34 -08:00
options Move some files under util/ to separate dirs 2017-04-05 19:09:16 -07:00
persistent_cache AIX and Solaris Sparc Support 2017-04-21 20:48:04 -07:00
redis Eliminate use of 'using namespace std'. Also remove a number of ADL references to std functions. 2016-05-20 07:42:18 -07:00
simulator_cache Add erase option to release cache 2017-04-24 11:28:36 -07:00
spatialdb Change Build Env to gcc-5 2017-04-14 11:12:56 -07:00
table_properties_collectors Updated all copyright headers to the new format. 2016-02-09 15:12:00 -08:00
transactions StackableDB should pass ResetStats() 2017-04-20 16:11:56 -07:00
ttl Move various string utility functions into string_util 2017-04-06 14:54:12 -07:00
write_batch_with_index Limit maximum memory used in the WriteBatch representation 2017-04-10 15:42:26 -07:00
col_buf_decoder.cc fix non-portable behavior in encoder 2017-01-20 16:39:22 -08:00
col_buf_decoder.h Fix clang build failure and refactor unit test 2016-08-02 15:16:39 -07:00
col_buf_encoder.cc Fix travis (compile for clang < 3.9) 2016-12-01 10:09:22 -08:00
col_buf_encoder.h Fix clang build failure and refactor unit test 2016-08-02 15:16:39 -07:00
column_aware_encoding_exp.cc Fix build on FreeBSD 2017-01-10 11:39:12 -08:00
column_aware_encoding_test.cc AIX and Solaris Sparc Support 2017-04-21 20:48:04 -07:00
column_aware_encoding_util.cc Fix Windows build issues (#1253) 2016-08-02 17:15:18 -07:00
column_aware_encoding_util.h Move some files under util/ to separate dirs 2017-04-05 19:09:16 -07:00
env_librados_test.cc Move some files under util/ to separate dirs 2017-04-05 19:09:16 -07:00
env_librados.cc Remove double buffering on RandomRead on Windows. 2017-04-27 12:30:05 -07:00
env_librados.md Add EnvLibrados - RocksDB Env of RADOS (#1222) 2016-07-21 11:16:34 -07:00
env_mirror_test.cc Move some files under util/ to separate dirs 2017-04-05 19:09:16 -07:00
env_mirror.cc Remove double buffering on RandomRead on Windows. 2017-04-27 12:30:05 -07:00
env_timed_test.cc add TimedEnv 2017-04-04 11:24:12 -07:00
env_timed.cc Move some files under util/ to separate dirs 2017-04-05 19:09:16 -07:00
merge_operators.h Introduce FullMergeV2 (eliminate memcpy from merge operators) 2016-07-20 09:49:03 -07:00
object_registry_test.cc Generalize Env registration framework 2017-01-25 16:09:14 -08:00
util_merge_operators_test.cc Introduce FullMergeV2 (eliminate memcpy from merge operators) 2016-07-20 09:49:03 -07:00