On 01/14/2016 11:07 AM, Ming Lin wrote:
From: Ming Lin <ming.l@xxxxxxxxxxxxxxx> Suppose that a system has 8 logical CPUs(4 cores with hyperthread) and that 5 hardware queues are provided by a block driver. With the current algorithm this will lead to the following assignment of logical CPU to hardware queue: HWQ 0: 0 1 HWQ 1: 2 3 HWQ 2: 4 5 HWQ 3: 6 7 HWQ 4: (none) One way to fix it is to change the algorithm so the assignment may be: HWQ 0: 0 1 HWQ 1: 2 3 HWQ 2: 4 5 HWQ 3: 6 HWQ 4: 7
This has been suggested before, but the previous mapping is actually what I originally intended, so that it's symmetric. So by design, not a bug. It's not that I'm completely adverse to changing it, but I've yet to see a compelling reason to do so (and your patch doesn't have that either, it just states that it changes the mapping from X to Y).
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