CONTAP-311454：クライアントからのトラフィックが多いことによるレイテンシと速度の低下

問題

The following EMS message is seen and high utilization is seen on a network context:
Mon Sep 09 10:23:29 +0000 [node1: kernel: net_cg_utilThresholdExceed_1:notice]: params: {'connection_group': '20', 'current_utilization': '98', 'configured_threshold': '95'} Cluster::> set -privilege diagnostic; statistics show -object nwk_ctx -counter utilization -raw -tab -filter "utilization>30" -node node1; set -privilege admin node1: nwk_ctx: 10/22/2024 10:06:06 instance name utilization -------- ----------- ctx_09 98
Latency is seen which is high from users, as shown in the Network column of the below output:
Cluster::> qos statistics volume latency show -vserver svm1 -volume vol1 Workload ID Latency Network Cluster Data Disk QoS Max QoS Min NVRAM Cloud FlexCache SM Sync VA AVSCAN --------------- ------ ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- -total- - 744.00us 328.00us 0ms 392.00us 4.00us 0ms 0ms 20.00us 0ms 0ms 0ms 0ms 0ms vol1-wid12503 12503 93.25ms 93.18ms 0ms 69.00us 0ms 0ms 0ms 1.00us 0ms 0ms 0ms 0ms 0ms
ifstat -a -v from the node shell shows the RSS utilization (9.14.1 or higher) on one Connection Group by a higher value of packets:
Cluster::> run -node node1 ifstat -a -v ... Queue 7 CG ID: 8 | Rx packets: 361m | Rx bytes: 1065g Tx packets: 472m | Tx bytes: 4039g ... Queue 8 CG ID: 9 | Rx packets: 35967m | Rx bytes: 50080g <---higher amount of packets Tx packets: 3206m | Tx bytes: 21002g ... Queue 9 CG ID: 10 | Rx packets: 1063m | Rx bytes: 3071g Tx packets: 426m | Tx bytes: 5950g