On 8/24/07, Jim Witte <email@hidden> wrote:
> Very simple (or perhaps not) question, which might be more
> appropriate for an IOKit list: Is there a technical reason why
> *certain* phases of the actions of hardware, ... cannot be
> performed synchronously, and thus not block the entire system?
I think you mean asynchronously in the above, anyway...
The system, as a whole, isn't stopping to spin up the disk, etc.. It
likely is upper level software (or a framework it depends on) sending
out a synchronous IO request for data that cannot be satisfied until
the disk is spun up and read. This blocks that thread until the IO
request is satisfied.
-Shawn
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