Hi Martin,
i repeated your commands , nothing changed the problematic result .... regards, Simon Am 17.02.2019 um 15:48 schrieb Martin Blumenstingl: > Hello Jose, > > On Mon, Feb 11, 2019 at 2:45 PM Jose Abreu <jose.ab...@synopsys.com> wrote: >> Hello, >> >> On 2/9/2019 1:09 AM, Martin Blumenstingl wrote: >>> (it's interesting that the sending direction has 445 retries) >> I saw this before and I think it was related with COE. Can you >> please disable all offloading and try again? > OK, details are: > > (before doing anything) > # ethtool -k eth0 > Features for eth0: > rx-checksumming: on > tx-checksumming: on > tx-checksum-ipv4: on > tx-checksum-ip-generic: off [fixed] > tx-checksum-ipv6: on > tx-checksum-fcoe-crc: off [fixed] > tx-checksum-sctp: off [fixed] > scatter-gather: on > tx-scatter-gather: on > tx-scatter-gather-fraglist: off [fixed] > tcp-segmentation-offload: off > tx-tcp-segmentation: off [fixed] > tx-tcp-ecn-segmentation: off [fixed] > tx-tcp-mangleid-segmentation: off [fixed] > tx-tcp6-segmentation: off [fixed] > udp-fragmentation-offload: off > generic-segmentation-offload: on > generic-receive-offload: on > large-receive-offload: off [fixed] > rx-vlan-offload: off [fixed] > tx-vlan-offload: off [fixed] > ntuple-filters: off [fixed] > receive-hashing: off [fixed] > highdma: on [fixed] > rx-vlan-filter: off [fixed] > vlan-challenged: off [fixed] > tx-lockless: off [fixed] > netns-local: off [fixed] > tx-gso-robust: off [fixed] > tx-fcoe-segmentation: off [fixed] > tx-gre-segmentation: off [fixed] > tx-gre-csum-segmentation: off [fixed] > tx-ipxip4-segmentation: off [fixed] > tx-ipxip6-segmentation: off [fixed] > tx-udp_tnl-segmentation: off [fixed] > tx-udp_tnl-csum-segmentation: off [fixed] > tx-gso-partial: off [fixed] > tx-sctp-segmentation: off [fixed] > tx-esp-segmentation: off [fixed] > tx-udp-segmentation: off [fixed] > fcoe-mtu: off [fixed] > tx-nocache-copy: off > loopback: off [fixed] > rx-fcs: off [fixed] > rx-all: off [fixed] > tx-vlan-stag-hw-insert: off [fixed] > rx-vlan-stag-hw-parse: off [fixed] > rx-vlan-stag-filter: off [fixed] > l2-fwd-offload: off [fixed] > hw-tc-offload: off [fixed] > esp-hw-offload: off [fixed] > esp-tx-csum-hw-offload: off [fixed] > rx-udp_tunnel-port-offload: off [fixed] > tls-hw-tx-offload: off [fixed] > tls-hw-rx-offload: off [fixed] > rx-gro-hw: off [fixed] > tls-hw-record: off [fixed] > > this causes retries when running iperf3 in transmit mode. > > with offloading disabled: > > # ethtool -K eth0 rx off tx off > # ethtool -k eth0 > Features for eth0: > rx-checksumming: off > tx-checksumming: off > tx-checksum-ipv4: off > tx-checksum-ip-generic: off [fixed] > tx-checksum-ipv6: off > tx-checksum-fcoe-crc: off [fixed] > tx-checksum-sctp: off [fixed] > scatter-gather: on > tx-scatter-gather: on > tx-scatter-gather-fraglist: off [fixed] > tcp-segmentation-offload: off > tx-tcp-segmentation: off [fixed] > tx-tcp-ecn-segmentation: off [fixed] > tx-tcp-mangleid-segmentation: off [fixed] > tx-tcp6-segmentation: off [fixed] > udp-fragmentation-offload: off > generic-segmentation-offload: on > generic-receive-offload: on > large-receive-offload: off [fixed] > rx-vlan-offload: off [fixed] > tx-vlan-offload: off [fixed] > ntuple-filters: off [fixed] > receive-hashing: off [fixed] > highdma: on [fixed] > rx-vlan-filter: off [fixed] > vlan-challenged: off [fixed] > tx-lockless: off [fixed] > netns-local: off [fixed] > tx-gso-robust: off [fixed] > tx-fcoe-segmentation: off [fixed] > tx-gre-segmentation: off [fixed] > tx-gre-csum-segmentation: off [fixed] > tx-ipxip4-segmentation: off [fixed] > tx-ipxip6-segmentation: off [fixed] > tx-udp_tnl-segmentation: off [fixed] > tx-udp_tnl-csum-segmentation: off [fixed] > tx-gso-partial: off [fixed] > tx-sctp-segmentation: off [fixed] > tx-esp-segmentation: off [fixed] > tx-udp-segmentation: off [fixed] > fcoe-mtu: off [fixed] > tx-nocache-copy: off > loopback: off [fixed] > rx-fcs: off [fixed] > rx-all: off [fixed] > tx-vlan-stag-hw-insert: off [fixed] > rx-vlan-stag-hw-parse: off [fixed] > rx-vlan-stag-filter: off [fixed] > l2-fwd-offload: off [fixed] > hw-tc-offload: off [fixed] > esp-hw-offload: off [fixed] > esp-tx-csum-hw-offload: off [fixed] > rx-udp_tunnel-port-offload: off [fixed] > tls-hw-tx-offload: off [fixed] > tls-hw-rx-offload: off [fixed] > rx-gro-hw: off [fixed] > tls-hw-record: off [fixed] > # iperf3 -c 192.168.1.100 > Connecting to host 192.168.1.100, port 5201 > [ 5] local 192.168.1.131 port 58412 connected to 192.168.1.100 port 5201 > [ ID] Interval Transfer Bitrate Retr Cwnd > [ 5] 0.00-1.00 sec 112 MBytes 937 Mbits/sec 32 59.4 KBytes > [ 5] 1.00-2.00 sec 112 MBytes 937 Mbits/sec 25 290 KBytes > [ 5] 2.00-3.00 sec 109 MBytes 915 Mbits/sec 150 279 KBytes > [ 5] 3.00-4.00 sec 112 MBytes 941 Mbits/sec 0 334 KBytes > [ 5] 4.00-5.00 sec 112 MBytes 941 Mbits/sec 0 342 KBytes > [ 5] 5.00-6.00 sec 111 MBytes 934 Mbits/sec 98 320 KBytes > [ 5] 6.00-7.00 sec 111 MBytes 929 Mbits/sec 123 76.4 KBytes > [ 5] 7.00-8.00 sec 109 MBytes 917 Mbits/sec 119 277 KBytes > [ 5] 8.00-9.00 sec 112 MBytes 941 Mbits/sec 0 314 KBytes > [ 5] 9.00-10.00 sec 112 MBytes 940 Mbits/sec 0 318 KBytes > - - - - - - - - - - - - - - - - - - - - - - - - - > [ ID] Interval Transfer Bitrate Retr > [ 5] 0.00-10.00 sec 1.09 GBytes 933 Mbits/sec 547 sender > [ 5] 0.00-10.04 sec 1.09 GBytes 929 Mbits/sec receiver > > iperf Done. > > so for me disabling offloading didn't change anything. > > Jose, is my command for disabling offloading correct? > Simon, does disabling offloading improve anything in your iperf2 or > real-world scenario on a kernel where you previously had performance > issues? > > > Regards > Martin
