Re: [PATCH 5/5] scsi: virtio_scsi: fix IO hang by irq vector automatic affinity

2018-02-04 Thread Hannes Reinecke
On 02/03/2018 05:21 AM, Ming Lei wrote: > Now 84676c1f21e8ff5(genirq/affinity: assign vectors to all possible CPUs) > has been merged to V4.16-rc, and it is easy to allocate all offline CPUs > for some irq vectors, this can't be avoided even though the allocation > is improved. > > For example,

[PATCH 5/5] scsi: virtio_scsi: fix IO hang by irq vector automatic affinity

2018-02-02 Thread Ming Lei
Now 84676c1f21e8ff5(genirq/affinity: assign vectors to all possible CPUs) has been merged to V4.16-rc, and it is easy to allocate all offline CPUs for some irq vectors, this can't be avoided even though the allocation is improved. For example, on a 8cores VM, 4~7 are not-present/offline, 4 queues