> Flash has big disk energy, but is fast enough that copying it to RAM one word at a time like disk will probably bottleneck your performance by an order of mag

> Flash has big disk energy, but is fast enough that copying it to RAM one word at a time like disk will probably bottleneck your performance by an order of magnitude. Much more of a slowdown than that. Mmap a big file on an SSD, access its bytes randomly, and you can get your 500MB/s read speed down to kilobytes/s. > We need interfaces designed for zero-copy access to bulk persistent data. This is in tension with caching. For it to work, you'd need to get system builders to stop bundling smaller&faster storage with their slower&larger storage.