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I've got a (long-running) script that I'm trying execute. Unfortunately, as it runs, the memory usage of powershell begins to creep up. The script is relatively simple, and I can't see any obvious memory leaks. However, I am using an API which may be poorly behaved.
Is there an easy way to get the in-memory size of an object from within powershell, so I can see if my suspicions are correct?
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In Windows PowerShell there is no exclusive cmdlet to find out the CPU and memory utilization rates. You can use the get-wmi object cmdlet along with required parameters to fetch the results.
You can use Measure-Object to count objects or count objects with a specified Property. You can also use Measure-Object to calculate the Minimum, Maximum, Sum, StandardDeviation and Average of numeric values. For String objects, you can also use Measure-Object to count the number of lines, words, and characters.
Static member operator :: To find the static properties and methods of an object, use the Static parameter of the Get-Member cmdlet. The member name may be an expression. PowerShell Copy.
Perhaps a crude way to do would be something like this:
$memBefore = (Get-Process -id $pid).WS
# Create object here...
$memAfter = (Get-Process -id $pid).WS
($memAfter - $memBefore) / 1KB
If it is a memory leak you might be able to mitigate it with:
[gc]::Collect()
Another approx way:
$before = [gc]::GetTotalMemory($true)
$s = "A new string object"
$after = [gc]::GetTotalMemory($true)
($after - $before)/1kb # return the delta in KBytes
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