On Tue, Feb 07, 2023 at 02:53:58PM -0500, Vivek Goyal wrote: > On Tue, Feb 07, 2023 at 02:45:39PM -0500, Stefan Hajnoczi wrote: > > On Tue, Feb 07, 2023 at 11:14:46AM +0100, Peter-Jan Gootzen wrote: > > > Hi, > > > > > [cc German] > > > > For my MSc thesis project in collaboration with IBM > > > (https://github.com/IBM/dpu-virtio-fs) we are looking to improve the > > > performance of the virtio-fs driver in high throughput scenarios. We think > > > the main bottleneck is the fact that the virtio-fs driver does not support > > > multi-queue (while the spec does). A big factor in this is that our setup on > > > the virtio-fs device-side (a DPU) does not easily allow multiple cores to > > > tend to a single virtio queue. > > This is an interesting limitation in DPU. Virtqueues are single-consumer queues anyway. Sharing them between multiple threads would be expensive. I think using multiqueue is natural and not specific to DPUs. Stefan
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