On Fri, Jul 03, 2026 at 04:13:49PM +0200, Brett Sheffield wrote:

On 2026-07-02 18:55, Michael S. Tsirkin wrote:

quoted

On Thu, Jul 02, 2026 at 01:07:47PM +0200, Brett Sheffield wrote:

quoted

On 2026-07-02 09:24, Simon Schippers wrote:

quoted

On 7/1/26 22:56, Michael S. Tsirkin wrote:

quoted

- does it help to increase the tun queue size?

I agree, this would be great to know.

I tried adding a queue (qdisc pfifo limit 500) on both host and guest - no
apparent difference in drops or performance.

If there's any other setting you want me to try, let me know.

quoted

Maybe it's the supposedly rare case? Does this change anything
for you?

I also tried both patches, but again, no noticable difference.

Thank you. Simon pointed out issues with the patches but he also said his
intuition is strongly that it's not the way to go.
Let's wait for him to post the backpressure patch, we'll see.

-- 
MST