Scaling a file system to many cores using an operation log
Srivatsa S. Bhat, Rasha Eqbal, Austin T. Clements, M. Frans Kaashoek, Nickolai Zeldovich · 2017
It is challenging to simultaneously achieve multicore scalability and high disk throughput in a file system. For example, even for commutative operations like creating different files in the same directory, current file systems introduce cache-line conflicts when updating an in-memory copy of the on-disk directory block, which limits scalability.