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Andrew Kryczka 8c3a180e83 Set lower-bound on dynamic level sizes 
Summary:
Changed dynamic leveling to stop setting the base level's size bound below `max_bytes_for_level_base`.

Behavior for config where `max_bytes_for_level_base == level0_file_num_compaction_trigger * write_buffer_size` and same amount of data in L0 and base-level:

- Before #2027, compaction scoring would favor base-level due to dividing by size smaller than `max_bytes_for_level_base`.
- After #2027, L0 and Lbase get equal scores. The disadvantage is L0 is often compacted before reaching the num files trigger since `write_buffer_size` can be bigger than the dynamically chosen base-level size. This increases write-amp.
- After this diff, L0 and Lbase still get equal scores. Now it takes `level0_file_num_compaction_trigger` files of size `write_buffer_size` to trigger L0 compaction by size, fixing the write-amp problem above.
Closes https://github.com/facebook/rocksdb/pull/2123

Differential Revision: D4861570

Pulled By: ajkr

fbshipit-source-id: 467ddef56ed1f647c14d86bb018bcb044c39b964
2017-05-04 18:16:12 -07:00
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builder.cc
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builder.h
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c_test.c
support PopSavePoint for WriteBatch
2017-05-03 10:57:45 -07:00
c.cc
support PopSavePoint for WriteBatch
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column_family_test.cc
Move some files under util/ to separate dirs
2017-04-05 19:09:16 -07:00
column_family.cc
Remove an assert that causes TSAN failure.
2017-05-01 16:35:15 -07:00
column_family.h
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2017-04-27 18:06:12 -07:00
compact_files_test.cc
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compacted_db_impl.cc
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compacted_db_impl.h
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compaction_iteration_stats.h
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compaction_iterator_test.cc
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compaction_iterator.cc
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compaction_iterator.h
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compaction_job_stats_test.cc
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compaction_job_test.cc
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compaction_job.cc
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compaction_job.h
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compaction_picker_test.cc
Set lower-bound on dynamic level sizes
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compaction_picker_universal.cc
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compaction_picker_universal.h
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compaction_picker.cc
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compaction_picker.h
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compaction.cc
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2017-05-04 17:43:22 -07:00
compaction.h
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comparator_db_test.cc
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cuckoo_table_db_test.cc
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db_basic_test.cc
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db_bloom_filter_test.cc
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db_compaction_filter_test.cc
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db_compaction_test.cc
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db_dynamic_level_test.cc
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db_filesnapshot.cc
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db_flush_test.cc
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db_impl_compaction_flush.cc
Fix an issue of manual / auto compaction data race
2017-05-02 15:11:59 -07:00
db_impl_debug.cc
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db_impl_experimental.cc
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db_impl_files.cc
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db_impl_open.cc
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db_impl_readonly.cc
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db_impl_readonly.h
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db_impl_write.cc
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db_impl.cc
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2017-05-04 10:42:45 -07:00
db_impl.h
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db_merge_operator_test.cc
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db_options_test.cc
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db_properties_test.cc
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db_range_del_test.cc
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db_test_util.cc
Configure index partition size
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db_test_util.h
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db_test.cc
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version_edit.h
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version_set_test.cc
Set lower-bound on dynamic level sizes
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version_set.cc
Set lower-bound on dynamic level sizes
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version_set.h
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wal_manager_test.cc
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write_batch_internal.h
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write_batch_test.cc
support PopSavePoint for WriteBatch
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write_batch.cc
support PopSavePoint for WriteBatch
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write_callback_test.cc
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write_callback.h
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