>> I thought, that qemu-0.8.0's problem would be disk-IO. I installed >> Windows 2000 and in the task-manager the CPU-Time is 100% during intense >> IO. A "dir c:\ /A /S /B >NUL:" on the console causes 100% CPU-time and >> most of it being that red-colored "in-kernel-time". > > Qemu host IO is syncrhonous. ie. the guest is paused on the instruction that > issues the IO until the IO completes. As for as the guest is concerned it > happens instantly. This is all your test shows.
I have seen thoughts about asynchronous IO for qemu. I thought that they would have been integrated along with the DMA-patches already. I would really see how qemu performs with asynch IO enabled. Are there any patches out there? Greetings Sven _______________________________________________ Qemu-devel mailing list Qemu-devel@nongnu.org http://lists.nongnu.org/mailman/listinfo/qemu-devel
