Scott Drummonds on Virtualization

vscsiStats for ESXi


You will occasionally need vscsiStats to deepen your understanding of an application’s storage profile.  This tool is provided with ESX classic but requires configuration and installation for ESXi environments.  VMware is planning to add vscsiStats counters to the vSphere Client UI in a future version but until then you will have to perform the following to enable vscsiStats on ESXi.

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Optimizing Network Performance on vSphere

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You should probably not be reading this article.

What follows is my tale of performance optimizations so arcane and of extremely limited relevance as to make this guidance useful to one customer in 100,000.  The parameters I reference here should rarely–if ever–be touched by a VI admin.  I am documenting them for here for that one mischievous soul that is allowed to do as much damage as good in the pursuit of performance excellence. The rest of you should not even consider these changes for your production environment.

Seriously.  Don’t do it.  Don’t do it.

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