On Fri, 4 Sep 2020 15:53:25 +0200
Björn Töpel <bjorn.topel@xxxxxxxxx> wrote:
> On my machine the "one core scenario Rx drop" performance went from
> ~65Kpps to 21Mpps. In other words, from "not usable" to
> "usable". YMMV.
We have observed this kind of dropping off an edge before with softirq
(when userspace process runs on same RX-CPU), but I thought that Eric
Dumazet solved it in 4cd13c21b207 ("softirq: Let ksoftirqd do its job").
I wonder what makes AF_XDP different or if the problem have come back?
--
Best regards,
Jesper Dangaard Brouer
MSc.CS, Principal Kernel Engineer at Red Hat
LinkedIn: http://www.linkedin.com/in/brouer
