The Developer io_uring Discovered an Issue in QEMU That Slowed Down fdmon by 50-80 Times
Jens Axboe, the creator of io_uring and the I/O schedulers CFQ, Deadline, and Noop, has proposed a patch for inclusion in the QEMU emulator's codebase that reduces latency when using fdmon (file descriptor monitoring) in 'aio=io_uring' mode while the system is in an idle state by 50-80 times. The issue arose due to the conversion of the ppoll() operation into a sleep state with a timeout of 499 […]
