On Tue, 2017-10-10 at 18:00 +0600, Sergey K. wrote: > I'm using Debian 9(stretch edition) kernel 4.9., hp dl385 g7 server > with 32 cpu cores. NIC queues are tied to processor cores. Server is > shaping traffic (iproute2 and htb discipline + skbinfo + ipset + ifb) > and filtering some rules by iptables. > > At that moment, when traffic goes up about 1gbit/s cpu is very high > loaded. Perf tool tells me that kernel module > native_queued_spin_lock_slowpath loading cpu about 40%. > > After several hours of searching, I found that if I remove the htb > discipline from ifb0, the high load goes down. > Well, I think that problem with classify and shaping by htb. > > Who knows how to solve?
You use a single ifb0 on the whole (multiqueue) device for ingress ? What about multiple ifb instead, one per RX queue ? Alternative is to reduce contention and use a single RX queue.
