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SubjectRe: [PATCH v2 09/11] vduse: Add enable_irq_wq sysfs interface for virtqueues
On Fri, Dec 16, 2022 at 1:43 PM Jason Wang <jasowang@redhat.com> wrote:
>
> On Mon, Dec 5, 2022 at 5:03 PM Xie Yongji <xieyongji@bytedance.com> wrote:
> >
> > Add enable_irq_wq sysfs interface to control whether
> > use workqueue to inject irq or not. The vhost-vdpa case
> > can benefit from it.
>
> Do we have a benchmark result for this?
>

It can reduce 2~3 us latency in our sync I/O test.

> Or I wonder if we can extend set_vq_cb() by associating an eventfd
> then VDUSE can signal that eventfd directly?
>

It looks good to me. I can try this way in v3.

Thanks,
Yongji

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