Okay, so I'm trying to classify this bug report about slow QEMU I/O on a macOS host. The user wants me to pick from a list of categories like mistranslation, assembly, other, device, etc. First, the problem is related to I/O speed being slow in QEMU when running on macOS. They tested it with fio and noticed a difference compared to Linux hosts. So, it's an issue with performance. Looking at the categories: performance is one of them. The bug isn't about translation errors or assembly issues; it's specifically about how fast I/O operations are performing. So, performance seems like the right category here. performance