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Siying Dong 666a005f9b Support prefetch last 512KB with direct I/O in block based file reader 
Summary:
Right now, if direct I/O is enabled, prefetching the last 512KB cannot be applied, except compaction inputs or readahead is enabled for iterators. This can create a lot of I/O for HDD cases. To solve the problem, the 512KB is prefetched in block based table if direct I/O is enabled. The prefetched buffer is passed in totegher with random access file reader, so that we try to read from the buffer before reading from the file. This can be extended in the future to support flexible user iterator readahead too.
Closes https://github.com/facebook/rocksdb/pull/2708

Differential Revision: D5593091

Pulled By: siying

fbshipit-source-id: ee36ff6d8af11c312a2622272b21957a7b5c81e7
2017-08-11 12:16:45 -07:00
..
builder.cc Revert "comment out unused parameters" 2017-07-21 18:26:26 -07:00
builder.h Change RocksDB License 2017-07-15 16:11:23 -07:00
c.cc Add column families related functions (C API) 2017-08-10 13:43:54 -07:00
c_test.c Add column families related functions (C API) 2017-08-10 13:43:54 -07:00
column_family.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
column_family.h Change RocksDB License 2017-07-15 16:11:23 -07:00
column_family_test.cc Revert "comment out unused parameters" 2017-07-21 18:26:26 -07:00
compact_files_test.cc Revert "comment out unused parameters" 2017-07-21 18:26:26 -07:00
compacted_db_impl.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
compacted_db_impl.h Revert "comment out unused parameters" 2017-07-21 18:26:26 -07:00
compaction.cc Fix universal compaction bug 2017-07-31 14:27:45 -07:00
compaction.h Change RocksDB License 2017-07-15 16:11:23 -07:00
compaction_iteration_stats.h Change RocksDB License 2017-07-15 16:11:23 -07:00
compaction_iterator.cc Revert "comment out unused parameters" 2017-07-21 18:26:26 -07:00
compaction_iterator.h Revert "comment out unused parameters" 2017-07-21 18:26:26 -07:00
compaction_iterator_test.cc Revert "comment out unused parameters" 2017-07-21 18:26:26 -07:00
compaction_job.cc Fix compaction div by zero logging 2017-07-24 11:58:02 -07:00
compaction_job.h Change RocksDB License 2017-07-15 16:11:23 -07:00
compaction_job_stats_test.cc Revert "comment out unused parameters" 2017-07-21 18:26:26 -07:00
compaction_job_test.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
compaction_picker.cc Fix caching of compaction picker's next index 2017-07-21 20:57:15 -07:00
compaction_picker.h Revert "comment out unused parameters" 2017-07-21 18:26:26 -07:00
compaction_picker_test.cc Fix FIFO compaction picker test 2017-07-26 12:12:26 -07:00
compaction_picker_universal.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
compaction_picker_universal.h Change RocksDB License 2017-07-15 16:11:23 -07:00
comparator_db_test.cc Revert "comment out unused parameters" 2017-07-21 18:26:26 -07:00
convenience.cc add VerifyChecksum() to db.h 2017-08-09 15:58:13 -07:00
corruption_test.cc add VerifyChecksum() to db.h 2017-08-09 15:58:13 -07:00
cuckoo_table_db_test.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
db_basic_test.cc Build fewer tests in Travis platform_dependent tests 2017-07-27 17:29:01 -07:00
db_block_cache_test.cc Revert "comment out unused parameters" 2017-07-21 18:26:26 -07:00
db_bloom_filter_test.cc Revert "comment out unused parameters" 2017-07-21 18:26:26 -07:00
db_compaction_filter_test.cc Revert "comment out unused parameters" 2017-07-21 18:26:26 -07:00
db_compaction_test.cc Revert "comment out unused parameters" 2017-07-21 18:26:26 -07:00
db_dynamic_level_test.cc Revert "comment out unused parameters" 2017-07-21 18:26:26 -07:00
db_encryption_test.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
db_filesnapshot.cc Remove some left-over BSD headers 2017-07-18 11:56:57 -07:00
db_flush_test.cc Revert "comment out unused parameters" 2017-07-21 18:26:26 -07:00
db_impl.cc add VerifyChecksum() to db.h 2017-08-09 15:58:13 -07:00
db_impl.h add VerifyChecksum() to db.h 2017-08-09 15:58:13 -07:00
db_impl_compaction_flush.cc Introduce bottom-pri thread pool for large universal compactions 2017-08-03 15:43:29 -07:00
db_impl_debug.cc Introduce bottom-pri thread pool for large universal compactions 2017-08-03 15:43:29 -07:00
db_impl_experimental.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
db_impl_files.cc move TableCache::EraseHandle outside of db mutex 2017-07-27 12:14:41 -07:00
db_impl_open.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
db_impl_readonly.cc Add Iterator::Refresh() 2017-07-24 10:54:37 -07:00
db_impl_readonly.h Revert "comment out unused parameters" 2017-07-21 18:26:26 -07:00
db_impl_write.cc Remove the orphan assert on !need_log_sync 2017-07-25 18:41:52 -07:00
db_info_dumper.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
db_info_dumper.h Change RocksDB License 2017-07-15 16:11:23 -07:00
db_inplace_update_test.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
db_io_failure_test.cc Fix LITE unit tests 2017-07-26 21:11:47 -07:00
db_iter.cc Add Iterator::Refresh() 2017-07-24 10:54:37 -07:00
db_iter.h Add Iterator::Refresh() 2017-07-24 10:54:37 -07:00
db_iter_test.cc Add Iterator::Refresh() 2017-07-24 10:54:37 -07:00
db_iterator_test.cc Add Iterator::Refresh() 2017-07-24 10:54:37 -07:00
db_log_iter_test.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
db_memtable_test.cc Revert "comment out unused parameters" 2017-07-21 18:26:26 -07:00
db_merge_operator_test.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
db_options_test.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
db_properties_test.cc Revert "comment out unused parameters" 2017-07-21 18:26:26 -07:00
db_range_del_test.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
db_sst_test.cc Revert "comment out unused parameters" 2017-07-21 18:26:26 -07:00
db_statistics_test.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
db_table_properties_test.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
db_tailing_iter_test.cc Revert "comment out unused parameters" 2017-07-21 18:26:26 -07:00
db_test.cc add VerifyChecksum() to db.h 2017-08-09 15:58:13 -07:00
db_test2.cc Support prefetch last 512KB with direct I/O in block based file reader 2017-08-11 12:16:45 -07:00
db_test_util.cc Fix LITE unit tests 2017-07-26 21:11:47 -07:00
db_test_util.h Revert "comment out unused parameters" 2017-07-21 18:26:26 -07:00
db_universal_compaction_test.cc Introduce bottom-pri thread pool for large universal compactions 2017-08-03 15:43:29 -07:00
db_wal_test.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
db_write_test.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
dbformat.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
dbformat.h Replace dynamic_cast<> 2017-07-28 16:27:16 -07:00
dbformat_test.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
deletefile_test.cc Revert "comment out unused parameters" 2017-07-21 18:26:26 -07:00
event_helpers.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
event_helpers.h Change RocksDB License 2017-07-15 16:11:23 -07:00
experimental.cc Replace dynamic_cast<> 2017-07-28 16:27:16 -07:00
external_sst_file_basic_test.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
external_sst_file_ingestion_job.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
external_sst_file_ingestion_job.h Change RocksDB License 2017-07-15 16:11:23 -07:00
external_sst_file_test.cc Revert "comment out unused parameters" 2017-07-21 18:26:26 -07:00
fault_injection_test.cc Revert "comment out unused parameters" 2017-07-21 18:26:26 -07:00
file_indexer.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
file_indexer.h Change RocksDB License 2017-07-15 16:11:23 -07:00
file_indexer_test.cc Revert "comment out unused parameters" 2017-07-21 18:26:26 -07:00
filename_test.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
flush_job.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
flush_job.h Change RocksDB License 2017-07-15 16:11:23 -07:00
flush_job_test.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
flush_scheduler.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
flush_scheduler.h Change RocksDB License 2017-07-15 16:11:23 -07:00
forward_iterator.cc Revert "comment out unused parameters" 2017-07-21 18:26:26 -07:00
forward_iterator.h Revert "comment out unused parameters" 2017-07-21 18:26:26 -07:00
forward_iterator_bench.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
internal_stats.cc Revert "comment out unused parameters" 2017-07-21 18:26:26 -07:00
internal_stats.h Change RocksDB License 2017-07-15 16:11:23 -07:00
job_context.h Change RocksDB License 2017-07-15 16:11:23 -07:00
listener_test.cc Revert "comment out unused parameters" 2017-07-21 18:26:26 -07:00
log_format.h Change RocksDB License 2017-07-15 16:11:23 -07:00
log_reader.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
log_reader.h Change RocksDB License 2017-07-15 16:11:23 -07:00
log_test.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
log_writer.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
log_writer.h Change RocksDB License 2017-07-15 16:11:23 -07:00
malloc_stats.cc Revert "comment out unused parameters" 2017-07-21 18:26:26 -07:00
malloc_stats.h Change RocksDB License 2017-07-15 16:11:23 -07:00
managed_iterator.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
managed_iterator.h Change RocksDB License 2017-07-15 16:11:23 -07:00
manual_compaction_test.cc Revert "comment out unused parameters" 2017-07-21 18:26:26 -07:00
memtable.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
memtable.h Change RocksDB License 2017-07-15 16:11:23 -07:00
memtable_list.cc Revert "comment out unused parameters" 2017-07-21 18:26:26 -07:00
memtable_list.h Change RocksDB License 2017-07-15 16:11:23 -07:00
memtable_list_test.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
merge_context.h Change RocksDB License 2017-07-15 16:11:23 -07:00
merge_helper.cc Optimize range-delete aggregator call in merge helper. 2017-08-05 00:15:35 -07:00
merge_helper.h Change RocksDB License 2017-07-15 16:11:23 -07:00
merge_helper_test.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
merge_operator.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
merge_test.cc Revert "comment out unused parameters" 2017-07-21 18:26:26 -07:00
options_file_test.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
perf_context_test.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
pinned_iterators_manager.h Change RocksDB License 2017-07-15 16:11:23 -07:00
plain_table_db_test.cc Revert "comment out unused parameters" 2017-07-21 18:26:26 -07:00
prefix_test.cc Revert "comment out unused parameters" 2017-07-21 18:26:26 -07:00
range_del_aggregator.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
range_del_aggregator.h Change RocksDB License 2017-07-15 16:11:23 -07:00
range_del_aggregator_test.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
repair.cc Try to repair db with wal_dir option, avoid leak some WAL files 2017-08-08 10:47:57 -07:00
repair_test.cc Try to repair db with wal_dir option, avoid leak some WAL files 2017-08-08 10:47:57 -07:00
snapshot_impl.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
snapshot_impl.h Change RocksDB License 2017-07-15 16:11:23 -07:00
table_cache.cc fix db get/write stats 2017-07-31 12:12:03 -07:00
table_cache.h Change RocksDB License 2017-07-15 16:11:23 -07:00
table_properties_collector.cc Revert "comment out unused parameters" 2017-07-21 18:26:26 -07:00
table_properties_collector.h Revert "comment out unused parameters" 2017-07-21 18:26:26 -07:00
table_properties_collector_test.cc Revert "comment out unused parameters" 2017-07-21 18:26:26 -07:00
transaction_log_impl.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
transaction_log_impl.h Change RocksDB License 2017-07-15 16:11:23 -07:00
version_builder.cc Revert "comment out unused parameters" 2017-07-21 18:26:26 -07:00
version_builder.h Change RocksDB License 2017-07-15 16:11:23 -07:00
version_builder_test.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
version_edit.cc Revert "comment out unused parameters" 2017-07-21 18:26:26 -07:00
version_edit.h Change RocksDB License 2017-07-15 16:11:23 -07:00
version_edit_test.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
version_set.cc Introduce bottom-pri thread pool for large universal compactions 2017-08-03 15:43:29 -07:00
version_set.h Introduce bottom-pri thread pool for large universal compactions 2017-08-03 15:43:29 -07:00
version_set_test.cc Revert "comment out unused parameters" 2017-07-21 18:26:26 -07:00
wal_manager.cc Replace dynamic_cast<> 2017-07-28 16:27:16 -07:00
wal_manager.h Change RocksDB License 2017-07-15 16:11:23 -07:00
wal_manager_test.cc Revert "comment out unused parameters" 2017-07-21 18:26:26 -07:00
write_batch.cc Revert "comment out unused parameters" 2017-07-21 18:26:26 -07:00
write_batch_base.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
write_batch_internal.h Change RocksDB License 2017-07-15 16:11:23 -07:00
write_batch_test.cc Gcc 7 ParsedInternalKey replace memset with clear function. 2017-07-24 11:31:15 -07:00
write_callback.h Change RocksDB License 2017-07-15 16:11:23 -07:00
write_callback_test.cc Fix flaky write_callback_test 2017-07-25 16:42:11 -07:00
write_controller.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
write_controller.h Change RocksDB License 2017-07-15 16:11:23 -07:00
write_controller_test.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
write_thread.cc Fix the overflow bug in AwaitState 2017-08-03 10:43:28 -07:00
write_thread.h fix comment 2017-08-09 22:57:01 -07:00