High latency on storage after upgrading NSX from 6.3.5 to 6.4.x
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Article ID: 307758
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Updated On:
Products
VMware NSX Networking
Issue/Introduction
Symptoms: After upgrading NSX from 6.3.5 to later version, you will experience high latency in storage.
Environment
VMware NSX for vSphere 6.4.x VMware NSX for vSphere 6.3.x
Cause
The cause for this latency increase has been identified to be the disabling of a feature (queue pairing) on the physical NIC’s during the NSX upgrade.
Resolution
To resolve this issue it’s recommended that we enable NIOC feature on the VDS tied to your SAN storage. Make sure that we only enable NetIOC on DVS with vmnics where infrastructure traffic like (SAN (iSCSI), Management, vSAN, vMotion...) etc are running.
Additional Information
This issue is been observed with the followoing VMnics. #Intel(R) 82599 10 Gigabit dualport Adapter. #Intel(R) Ethernet 10G 2P X520 Adapter #Broadcom 57404 Dual-Port 25Gb Adapter.