ESXi 5 network performance is slow

Posted by R D on Server Fault See other posts from Server Fault or by R D
Published on 2011-12-01T00:56:50Z Indexed on 2011/12/01 2:00 UTC
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Performance

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vmware-esxi

We just did a fresh install of ESXi 5 on a host that was running ESX 4 before. Nothing has changed hardware wise. After the upgrade network performance is much slower. Even copying a big file from one VM to another VM within same virtual switch is slower compared to other hosts that are running ESX 4.

Network cards are auto-negotiating at 1Gbps as were on ESX 4 prior to upgrade. All settings are default and I haven't played with Advanced Settings at all.

Before opening a case with vmware, wanted to know if I am missing something or if others have experienced similar issues and found a fix?

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