Unrealistic high Rx counters on the pNICs of ESXi hosts
Article ID: 407564
Updated On:
Products
VMware vCenter Server
VMware vSphere ESXi 8.0
Issue/Introduction
- You see high Rx counters values on the pNICs (Bytes received)
- Received average utilization calculated from the total received bytes counter is higher than the actual link speed of the card
vmnic link speed: 25 Gb/s (#network nic list or #esxcfg-nics -l)
NIC statistics for vmnic1:(#esxcli network stats get -n vmnic1)
...
Bytes received: 22518484621399250
....
Calculated:
Bytes received: 22518484621399250 / uptime in seconds (1114150) = 20211358094.9 bytes/s = 18.8 GB/s = 150.4 Gb/s - The "Bytes received" increase over a period of time matches what is observed via "
esxtop" network stats "MbRX/s" for the vmnic - bnxtnet driver version is lower than 233.x
Environment
ESXi 8.x
Cause
Hardware queue stats would reset after quiesce/activate device operations, leading to the stats being updated wrongly in function to check overflow.
Resolution
This issue is resolved in bnxtnet driver version 233.x.
Additional Information
Feedback
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