806d8916da
Summary: SimulatedHybridFileSystem now takes a more thorough simualtion of an HDD: 1. cover writes too, not just read 2. Latency and throughput is now simulated as seek + read time, using a rate limiter This implementation can be modified to simulate full HDD behavior, which is not yet done. Pull Request resolved: https://github.com/facebook/rocksdb/pull/9259 Test Plan: Run db_bench and observe the desired behavior. Reviewed By: jay-zhuang Differential Revision: D32903039 fbshipit-source-id: a83f5d72143e114d5e75edf39d647bf0b71978e1