CODEWITHSUNDEEP
windowsperformancepowershell
krizzo
krizzo

Reputation: 1883

How can I return multiple performance counters with Get-Counter at one time?

I can't figure out how to record multiple metrics from the system using a list. The $CounterList var doesn't work but the $CounterList_Working var does. I've seen examples that are getting a list based on the paths such as (Get-Counter -List Processor(*)).Paths.

I thought I could specify the paths in a variable but that doesn't work.

What is wrong with the $CounterList in the PowerShell script? The error message I get is "Get-Counter : The specified object was not found on the computer.". Which makes me think it's trying to read the list as a single value.

$CounterList = "\Network Interface(*)\Packets/sec
\Network Interface(*)\Current Bandwidth
\Network Interface(*)\Bytes Total/sec
\Memory\Committed Bytes
\Memory\Commit Limit"

$CounterList_Working = "\Processor(*)\% Processor Time"

echo "Gathering system data and writing to file $home\system_metrics.blg"
Get-Counter -Counter $CounterList -SampleInterval 2 -MaxSamples 10 | Export-counter -Path $home\system_metrics.blg

Upvotes: 4

Views: 2537

Answers (1)

Matt
Matt

Reputation: 46690

According to the MSDN for Get-Counter, the parameter ...

-Counter

Specifies, as a string array, data from the specified performance counters. Enter one or more counter paths. You can also pipe counter path strings to this cmdlet.

You are using a single string which would be fine for a single counter. You need an array for your list of multiple counters.

$CounterList = "\Network Interface(*)\Packets/sec",
    "\Network Interface(*)\Current Bandwidth",
    "\Network Interface(*)\Bytes Total/sec",
    "\Memory\Committed Bytes",
    "\Memory\Commit Limit"

Should do the trick as would many other ways to declare a string array.

If for some crazy reason you are really working with a newline delimited string you could just convert that to a string array with a -split. The following would give you the same results as my first example.

$CounterList = "\Network Interface(*)\Packets/sec
    \Network Interface(*)\Current Bandwidth
    \Network Interface(*)\Bytes Total/sec
    \Memory\Committed Bytes
    \Memory\Commit Limit" -split "`r`n"

However if you have any control over this I would opt for the former declaration.

Upvotes: 5

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