Siying Dong 7024263682 Dynamic level to adjust level multiplier when write is too heavy (#4338) ... Summary: Level compaction usually performs poorly when the writes so heavy that the level targets can't be guaranteed. With this improvement, we improve level_compaction_dynamic_level_bytes = true so that in the write heavy cases, the level multiplier can be slightly adjusted based on the size of L0. We keep the behavior the same if number of L0 files is under 2X compaction trigger and the total size is less than options.max_bytes_for_level_base, so that unless write is so heavy that compaction cannot keep up, the behavior doesn't change. Pull Request resolved: https://github.com/facebook/rocksdb/pull/4338 Differential Revision: D9636782 Pulled By: siying fbshipit-source-id: e27fc17a7c29c84b00064cc17536a01dacef7595		2018-10-22 10:21:47 -07:00
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rocksdb	Dynamic level to adjust level multiplier when write is too heavy (#4338)	2018-10-22 10:21:47 -07:00