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by ww520
2274 days ago
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An OS has many aspects to it. Scheduling tasks is only one of the aspects. Async/await is just the interface/mechanism in dealing with the tasks, in this case cooperative tasks. Interacting with hardware, dealing with interrupts, memory mapping/managing, task isolation, etc are all other aspects of an OS that are apart from task scheduling but still needed. Cooperative multitasking works fine as long as the users/developers understand the limitation. |
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The problem is, we basically already know that is not the case. We've got years of experience with what "cooperatively multitasked" OS looks like, and it was not a "works fine" situation. You can't understand the limitations at scale as they interact with each other far, far beyond the human mind's capacity to understand.