form my experience there is no equivalent to "Report Performance" ...Web client is only capable to export Events and Storage reports to csv file ...but not sum of counters as vSphere client.
You can only export specific metric like (CPU) through this flow:
Inventory object -> Click the Monitor tab -> Performance -> Click Advanced-> (through Chart Options or View chose desired metric) Click the Export icon-> Select a file type.
If you for some reason do not have vSphere client installed you can also use ESXTOP in batch mode to capture and export.
First you have to choose metrics you want in interactive mode than you have to save this preference via W command to (/.esxtop50rc file)
Next you can run ESXTOP in batch mode to capture data:
esxtop -b -a -d 5 -n 60 | gzip -9c > esxtopcharts.csv.gz (-d stands for sampling frequency in seconds ; -n stands for total number of samples)
After this procedure you can analyze your data with VisualEsxtop tool:
VisualEsxtop – VMware Labs
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Regards,
P.