Dezvoltatorul io_uring a identificat o problemă în QEMU care încetinea fdmon cu 50-80 de ori în modul de repaus.
Jens Axboe, creator of io_uring and the CFQ, Deadline, and Noop I/O schedulers, proposed a patch for inclusion in the QEMU emulator's codebase that reduces latency when running fdmon (file descriptor monitoring) in 'aio=io_uring' mode and when the system is idle by 50-80 times. The issue was caused by transitioning the ppoll() operation to sleep mode with a timeout of 499 […]
