'' operator: Failed to resolve table or column or scalar expression named 'Perf' If issue persists

[akassym]

Hello Community,

I tried to run the following query:

Perf
| where CounterName == "% Processor Time" and ObjectName == "Processor" and InstanceName == "_Total"
| summarize AggregatedValue = avg(CounterValue) by bin(TimeGenerated, 1hr), Computer
| render timechart

But I got:

'where' operator: Failed to resolve table or column expression named 'Perf' If issue persists, please open a support ticket. Request id: 3b67cd23-4f8d-4249-88d4-b8cac1b64346

Any ideas?

Cheers

[#2]

You have to enable the collection first (these are billable logs).

https://docs.microsoft.com/en-us/azure/azure-monitor/agents/data-sources-performance-counters