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Akanksha Mahajan 4cd16d65ae Add new option num_file_reads_for_auto_readahead in BlockBasedTableOptions (#10556) 
Summary:
RocksDB does auto-readahead for iterators on noticing more
than two reads for a table file if user doesn't provide readahead_size and reads are sequential.
A new option num_file_reads_for_auto_readahead is added which can be
configured and indicates after how many sequential reads prefetching should
be start.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/10556

Test Plan: Existing and new unit test

Reviewed By: anand1976

Differential Revision: D38947147

Pulled By: akankshamahajan15

fbshipit-source-id: c9eeab495f84a8df7f701c42f04894e46440ad97
 		2022-09-01 11:56:00 -07:00
..
delete_scheduler.cc Skip directory fsync for filesystem btrfs (#8903) 2021-11-03 12:21:27 -07:00
delete_scheduler.h Use SystemClock* instead of std::shared_ptr<SystemClock> in lower level routines (#8033) 2021-03-15 04:34:11 -07:00
delete_scheduler_test.cc Remove own ToString() (#9955) 2022-05-06 13:03:58 -07:00
file_prefetch_buffer.cc Provide support for direct_reads with async_io (#10197) 2022-07-06 11:42:59 -07:00
file_prefetch_buffer.h Add new option num_file_reads_for_auto_readahead in BlockBasedTableOptions (#10556) 2022-09-01 11:56:00 -07:00
file_util.cc Support read rate-limiting in SequentialFileReader (#9973) 2022-05-24 10:28:57 -07:00
file_util.h Set Read rate limiter priority dynamically and pass it to FS (#9996) 2022-05-18 19:41:44 -07:00
filename.cc Sync dir containing CURRENT after RenameFile on CURRENT as much as possible (#10573) 2022-08-29 17:35:21 -07:00
filename.h Sync dir containing CURRENT after RenameFile on CURRENT as much as possible (#10573) 2022-08-29 17:35:21 -07:00
line_file_reader.cc Support read rate-limiting in SequentialFileReader (#9973) 2022-05-24 10:28:57 -07:00
line_file_reader.h Support read rate-limiting in SequentialFileReader (#9973) 2022-05-24 10:28:57 -07:00
prefetch_test.cc Add new option num_file_reads_for_auto_readahead in BlockBasedTableOptions (#10556) 2022-09-01 11:56:00 -07:00
random_access_file_reader.cc Update MULTIGET_IO_BATCH_SIZE for non-async MultiGet (#10622) 2022-08-31 21:03:52 -07:00
random_access_file_reader.h Provide support for direct_reads with async_io (#10197) 2022-07-06 11:42:59 -07:00
random_access_file_reader_test.cc Add rate limiter priority to ReadOptions (#9424) 2022-02-16 23:18:14 -08:00
read_write_util.cc Move old files to warm tier in FIFO compactions (#8310) 2021-08-09 12:51:14 -07:00
read_write_util.h Refactor: add LineFileReader and Status::MustCheck (#8026) 2021-03-09 20:12:38 -08:00
readahead_file_info.h Reuse internal auto readhead_size at each Level (expect L0) for Iterations (#9056) 2021-11-10 16:20:04 -08:00
readahead_raf.cc Make StringEnv, StringSink, StringSource use FS classes (#7786) 2021-01-04 16:01:01 -08:00
readahead_raf.h Make StringEnv, StringSink, StringSource use FS classes (#7786) 2021-01-04 16:01:01 -08:00
sequence_file_reader.cc Support read rate-limiting in SequentialFileReader (#9973) 2022-05-24 10:28:57 -07:00
sequence_file_reader.h Support read rate-limiting in SequentialFileReader (#9973) 2022-05-24 10:28:57 -07:00
sst_file_manager_impl.cc Fix race condition in SstFileManagerImpl error recovery code (#9435) 2022-01-25 23:22:58 -08:00
sst_file_manager_impl.h Fix typo about file/sst_file_manager_impl.h (#9799) 2022-04-04 09:57:33 -07:00
writable_file_writer.cc WritableFileWriter to allow operation after failure when SyncWithoutFlush() is involved (#10555) 2022-08-24 07:30:52 -07:00
writable_file_writer.h WritableFileWriter to allow operation after failure when SyncWithoutFlush() is involved (#10555) 2022-08-24 07:30:52 -07:00