iSCSI写入性能极差、延迟确认
适用场景
- ONTAP
- VMware ESXi
- Windows Server
问题描述
- iSCSI LUN 的性能未达到 其硬件、磁盘和 网络性能的预期
- 卷 或网络层上没有常规延迟的迹象
- iSCSI配置、MPIO、连接和会话测试 不会为根发生原因提供信息
- VMware ALOA PSP采用轮询、 每个路径的默认IOP为1 或1000、并使用 VMK/vmnic 1对1映射
- 总线超限意味着什么? 在iSCSI网络上观察到延迟的堆叠和总线超限
- 性能下降与SnapMirror复制有关
EMS错误示例:
vifmgr: vifmgr.bcastDomainPartition:error]: Broadcast domain Replication is partitioned into 2 groups on node one. The different groups are. LIFs hosted on the ports in this broadcast domain may be at the risk of seeing connectivity issues.
vifmgr: vifmgr.bcastDomainPartition:error]: Broadcast domain Replication is partitioned into 2 groups on node two. The different groups are. LIFs hosted on the ports in this broadcast domain may be at the risk of seeing connectivity issues.