[PATCH 1/1] blk-mq: map all HWQ also in hyperthreaded system

[Max Gurtovoy]

On 7/5/2017 10:59 AM, Johannes Thumshirn wrote:
> On Wed, Jun 28, 2017 at 03:44:40PM +0300, Max Gurtovoy wrote:
>> This patch performs sequential mapping between CPUs and queues.
>> In case the system has more CPUs than HWQs then there are still
>> CPUs to map to HWQs. In hyperthreaded system, map the unmapped CPUs
>> and their siblings to the same HWQ.
>> This actually fixes a bug that found unmapped HWQs in a system with
>> 2 sockets, 18 cores per socket, 2 threads per core (total 72 CPUs)
>> running NVMEoF (opens upto maximum of 64 HWQs).
>
> Christoph/Sagi/Keith,
>
> any updates on this patch? Without it I' not able to run NVMf on a box with 44
> Cores and 88 Threads w/o adding -i 44 to the nvme connect statement.
>
> Thanks,
> 	Johannes
>

Hi Johannes,
this was merge already to the main tree (Jens add it to his pull request)

Cheers,
	Max.