On Sat, 10 Nov 2018 21:02:10 +0100 Paweł Staszewski <pstaszew...@itcare.pl> wrote:
> W dniu 10.11.2018 o 20:34, Jesper Dangaard Brouer pisze: > > I want you to experiment with: > > > > ethtool --set-priv-flags DEVICE rx_striding_rq off > > just checked that previously connectx4 was have thos disabled: > ethtool --show-priv-flags enp175s0f0 > > Private flags for enp175s0f0: > rx_cqe_moder : on > tx_cqe_moder : off > rx_cqe_compress : off > rx_striding_rq : off > rx_no_csum_complete: off > The CX4 hardware does not have this feature (p.s. the CX4-Lx does). > So now we are on connectx5 and we have enabled - for sure connectx5 > changed cpu load - where i have now max 50/60% cpu where with connectx4 > there was sometimes near 100% with same configuration. I (strongly) believe the CPU load was related to the page-alloactor lock congestion, that Aaron fixed. -- Best regards, Jesper Dangaard Brouer MSc.CS, Principal Kernel Engineer at Red Hat LinkedIn: http://www.linkedin.com/in/brouer
