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Jason Volk 4a60cb20ad Fix bug in MultiRead() coalescing introduced in 4fc216649d (#6446). (#6979) 
Summary:
TryMerge() overzealously creates one huge file read request in an attempt to merge smaller disjoint requests. For example, ~30 input requests of ~100 bytes output as 1 request of 100 MiB causing alarmingly large read throughputs to be repeatedly observed by the environment.

Signed-off-by: Jason Volk <jason@zemos.net>

Pull Request resolved: https://github.com/facebook/rocksdb/pull/6979

Reviewed By: siying

Differential Revision: D22668892

Pulled By: cheng-chang

fbshipit-source-id: 7506fe9621b7f1a747dadf6b8ddb1b1a141c1937
2020-07-22 15:03:22 -07:00
..
delete_scheduler_test.cc
More Makefile Cleanup (#7097)
2020-07-09 14:35:17 -07:00
delete_scheduler.cc
Fix for TSAN failure in DeleteScheduler (#7029)
2020-06-26 15:37:22 -07:00
delete_scheduler.h
Fix for TSAN failure in DeleteScheduler (#7029)
2020-06-26 15:37:22 -07:00
file_prefetch_buffer.cc
Extend Get/MultiGet deadline support to table open (#6982)
2020-06-29 14:53:17 -07:00
file_prefetch_buffer.h
Extend Get/MultiGet deadline support to table open (#6982)
2020-06-29 14:53:17 -07:00
file_util.cc
More Makefile Cleanup (#7097)
2020-07-09 14:35:17 -07:00
file_util.h
More Makefile Cleanup (#7097)
2020-07-09 14:35:17 -07:00
filename.cc
Find/purge obsolete blob files (#6807)
2020-05-07 09:32:51 -07:00
filename.h
Find/purge obsolete blob files (#6807)
2020-05-07 09:32:51 -07:00
random_access_file_reader_test.cc
More Makefile Cleanup (#7097)
2020-07-09 14:35:17 -07:00
random_access_file_reader.cc
Fix bug in MultiRead() coalescing introduced in 4fc216649d (#6446). (#6979)
2020-07-22 15:03:22 -07:00
random_access_file_reader.h
Use steady_clock instead of system_clock in FileOperationInfo::TimePoint (#7153)
2020-07-22 08:55:02 -07:00
read_write_util.cc
Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433)
2020-02-20 12:09:57 -08:00
read_write_util.h
Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433)
2020-02-20 12:09:57 -08:00
readahead_raf.cc
Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433)
2020-02-20 12:09:57 -08:00
readahead_raf.h
Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433)
2020-02-20 12:09:57 -08:00
sequence_file_reader.cc
Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433)
2020-02-20 12:09:57 -08:00
sequence_file_reader.h
Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433)
2020-02-20 12:09:57 -08:00
sst_file_manager_impl.cc
Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433)
2020-02-20 12:09:57 -08:00
sst_file_manager_impl.h
Add logs and stats in DeleteScheduler (#6927)
2020-06-05 09:43:04 -07:00
writable_file_writer.cc
Use steady_clock instead of system_clock in FileOperationInfo::TimePoint (#7153)
2020-07-22 08:55:02 -07:00
writable_file_writer.h
Use steady_clock instead of system_clock in FileOperationInfo::TimePoint (#7153)
2020-07-22 08:55:02 -07:00