On Tue, Sep 23, 2025 at 12:15:45AM +0200, Simon Schippers wrote: > This patch series deals with TUN, TAP and vhost_net which drop incoming > SKBs whenever their internal ptr_ring buffer is full. Instead, with this > patch series, the associated netdev queue is stopped before this happens. > This allows the connected qdisc to function correctly as reported by [1] > and improves application-layer performance, see our paper [2]. Meanwhile > the theoretical performance differs only slightly:
About this whole approach. What if userspace is not consuming packets? Won't the watchdog warnings appear? Is it safe to allow userspace to block a tx queue indefinitely? -- MST
