Getting in-memory size of an object in Powershell

Question

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?

Answer 1

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()

Answer 2

Another approx way:

$before = [gc]::GetTotalMemory($true)
$s = "A new string object"
$after = [gc]::GetTotalMemory($true)

($after - $before)/1kb # return the delta in KBytes