Best Way To Collect Performance Data

[rovalent]

What is the most efficient way to collect performance data into a CSV file for analysis?

I am looking for individual VM usage and esx host usage.

CPU/Mem/Net/IO

[rovalent]

I forgot to mention, right now im using the following command and saving it to a CSV file.

/usr/bin/esxtop -b -d 600 -n 144 /tmp/`hostname -s`-`date +%Y-%m-%d`.csv 2>>/var/log/collect.log

It is a true hack, but right now the best way I came up with to generate a CSV file.