Symptoms
When vCenter is using VxRail systems on 25 Gb Broadcom BCM57414 NetXtreme-E 10Gb/25Gb RDMA Ethernet Controller with hardware LRO enabled content library transfer performance is slow.Exporting an item from the published content library would average out at ~1MBps (lows around 150KBps and highs around 9MBps). It does not happen with a datastore browser download or OVF export from outside content library.Note: This can be between vCenter content library sync task
Cause
Issue is related to hardware LRO
Resolution
This issue is resolved in vCenter Appliance 6.7 Update 3p. This is already fixed in vCenter Server Appliance 7.0
Workaround
You can disable LRO on either vCenter or the hardware.Disable vCenter LRO
ethtool -K eth0 lro off
Understanding TCP Segmentation Offload (TSO) and Large Receive Offload (LRO) in a VMware environment (2055140)ORDisable Hardware LRO
#esxcfg-module -s disable_tpa=1 bnxtnet
Related Information
Issue was see on Driver/Fw comboBroadcom BCM57414 NetXtreme-E 10Gb/25Gb RDMA Ethernet Controller
Driver: bnxtnet 216.0.42.4 Firmware: 214.4.32.0
