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?
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()
[gc] is a built-in type. I've had to use to solve this third-party library issue which deals with open files.Another approx way:
$before = [gc]::GetTotalMemory($true)
$s = "A new string object"
$after = [gc]::GetTotalMemory($true)
($after - $before)/1kb # return the delta in KBytes
This looks right, from reddit. At least for simple types.
using namespace System.Runtime.InteropServices
$tmp = 1234567890 # int32
[Marshal]::SizeOf($tmp)
4
$tmp = 12345678900 # int64
[Marshal]::SizeOf($tmp)
8
$tmp = 12345678900000000000 # decimal
[Marshal]::SizeOf($tmp)
16
[Marshal]::SizeOf
OverloadDefinitions
-------------------
static int SizeOf(System.Object structure)
static int SizeOf(type t)
static int SizeOf[T](T structure)
static int SizeOf[T]()
