Gathering System Process IO details - powershell

Question

I am trying to prepare a report wherein I need to collect the I/O read,write and other bytes of all the process running on the system. Below is the script which I currently use.
Get-Process|select name,cpu,#{name="WorkingSet";Expression={$_.WorkingSet/1kb}},BasePriority,path|where {$_.Name -in 'dllhost','firefox','dsapi'}
Below is output that we obtain after a few processing and measure object.
The issue which I am facing is that for most of the system processes or where the username is system, the value for those returns mostly in the form zero. Kindly provide some directions on how to fix this issue and obtain the actual value for the system process as well.
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From what I read on the I/O values will not be extracted from the get-process cmdlet which is why I have used the below cmdlet and it works fine for user created process however for the system created process the script returns a zero value as show in the above image.
$gc = get-counter '\Process(dllhost)\IO Read Bytes/sec'
$gc.countersamples | sort cookedvalue

Answer 1

Ensure you're running powershell as administrator.
There is no ReadByteSec or WriteBytpeSec from what I can see.
You're also using a select statement which doesn't contain those properties.
Type this to see all the available properties for dllhost:
$processes = Get-Process | where {$_.Name -in 'dllhost'}
Get-Member -InputObject $processes[0]
And then add those to your statement:
Get-Process|select name,cpu,#{name="WorkingSet";Expression={$.WorkingSet/1kb}},BasePriority,path, *BytesField1, BytesField2, etc* |where {$.Name -in 'dllhost','firefox','dsapi'}