I read the description differently. The article says, "Put those blocks in the flash ... leaving big sequential I/Os to the disk." Sounds to me like the small

I read the description differently. The article says, "Put those blocks in the flash ... leaving big sequential I/Os to the disk." Sounds to me like the small blocks that are accessed (read or written) often are physically located in the flash---not just cached. If your package database isn't sequential on disk and it's accessed a lot by your system, it will probably be located in the flash.