Differences

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--- 100g_tuning [2023/07/27 22:05] – root
+++ 100g_tuning [2025/10/15 19:51] (current) – external edit 127.0.0.1
@@ Line 69: / Line 69: @@
 ==BBR==
 Enable TCP/BBR congestion control. See BBR and Redhat-3 above.
+echo "net.ipv4.tcp_congestion_control = bbr" >> /etc/sysctl.conf
 ==Stanford==
 <code>
 firewall-cmd --zone=public --add-port=61617/tcp --permanent
 firewall-cmd --zone=public --add-port=8090/tcp --permanent
@@ Line 159: / Line 162: @@
 echo 2 > /proc/irq/182/smp_affinity
 echo 4 > /proc/irq/183/smp_affinity
+</code>
+==ethtool==
+from vm host
+<code>
+[root@fiona ~]# ethtool -k ens4np0
+Features for ens4np0:
+rx-checksumming: on
+tx-checksumming: on
+	tx-checksum-ipv4: off [fixed]
+	tx-checksum-ip-generic: on
+	tx-checksum-ipv6: off [fixed]
+	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: on
+	tx-tcp-segmentation: on
+	tx-tcp-ecn-segmentation: off [fixed]
+	tx-tcp-mangleid-segmentation: off
+	tx-tcp6-segmentation: on
+generic-segmentation-offload: on
+generic-receive-offload: on
+large-receive-offload: off [fixed]
+rx-vlan-offload: on
+tx-vlan-offload: on
+ntuple-filters: off
+receive-hashing: on
+highdma: on [fixed]
+rx-vlan-filter: on
+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: on
+tx-gre-csum-segmentation: on
+tx-ipxip4-segmentation: on
+tx-ipxip6-segmentation: on
+tx-udp_tnl-segmentation: on
+tx-udp_tnl-csum-segmentation: on
+tx-gso-partial: on
+tx-tunnel-remcsum-segmentation: off [fixed]
+tx-sctp-segmentation: off [fixed]
+tx-esp-segmentation: off [fixed]
+tx-udp-segmentation: on
+tx-gso-list: off [fixed]
+rx-udp-gro-forwarding: off
+rx-gro-list: off
+tls-hw-rx-offload: off [fixed]
+fcoe-mtu: off [fixed]
+tx-nocache-copy: off
+loopback: off [fixed]
+rx-fcs: off
+rx-all: off
+tx-vlan-stag-hw-insert: on
+rx-vlan-stag-hw-parse: off [fixed]
+rx-vlan-stag-filter: on [fixed]
+l2-fwd-offload: off [fixed]
+hw-tc-offload: off
+esp-hw-offload: off [fixed]
+esp-tx-csum-hw-offload: off [fixed]
+rx-udp_tunnel-port-offload: on
+tls-hw-tx-offload: off [fixed]
+rx-gro-hw: off [fixed]
+tls-hw-record: off [fixed]
 </code>