Don't assume io_uring is an automatic win. Last time I benchmarked io_uring, it was good enough, but I was able to get measurably faster from syscalls and a we

Don't assume io_uring is an automatic win. Last time I benchmarked io_uring, it was good enough, but I was able to get measurably faster from syscalls and a well-crafted userspace thread pool for storage to NVMe. (Note: the I/O thread pool I wrote came out noticably faster than fio, the benchmark tool, so don't assume fio results are the best possible.) For that reason, I have a small application which can be configured for either io_uring or the thread pool, and the thread pool is preferred for performance.