Yi Wu 24a24f013d Enable configurable readahead for iterators ... Summary: Add an option `iterator_readahead_size` to `ReadOptions` to enable configurable readahead for iterators similar to the corresponding option for compaction. Test Plan: ``` make commit_prereq ``` Reviewers: kumar.rangarajan, ott, igor, sdong Reviewed By: sdong Subscribers: yiwu, andrewkr, dhruba Differential Revision: https://reviews.facebook.net/D55419		2016-05-04 15:25:58 -07:00
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rocksdb	Enable configurable readahead for iterators	2016-05-04 15:25:58 -07:00