由于MetroCluster SDS上的NVLog传输、写入延迟较长
Knowledge Base guidance
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适用场景
- ONTAP 9
- MetroCluster软件定义的存储(MCC SDS)
问题描述
- 网络配置VXLAN后MCC SDS上的写入延迟较长
- 在命令行界面中、使用命令QoS统计信息volume延迟show检查
cluster::> qos statistics volume latency show -node test_node1
Workload ID Latency Network Cluster Data Disk QoS NVRAM Cloud
------------ ------ ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- -
volume_1 12578 15426ms 1ms 0ms 0.5us 1ms 0ms 123ms 0ms
- EMS显示警报：
Wed Jan 17 09:01:35 +0800 [PDC-SDC-ONTAP-MCC-A-02: pha_main001: mlm.excessive.TPlatency:notice]: Average latency of 250077us on target port 5302800000030000, has exceeded 250000usWed Jan 17 09:02:33 +0800 [PDC-SDC-ONTAP-MCC-A-02: pha_main000: mlm.excessive.TPlatency:notice]: Average latency of 250135us on target port 5301800000040000, has exceeded 250000us