Powershell does not release the memory

When running this script from Powershell or Batch: find and replace characters in Windows XP (Powershell 1.0) all goes well. But after script has stopped processing a text file, Powershell开发者_如何学运维 still holds over 1 000 000 kb memory (when inspected from taskmanager) and it does not seem to release the memory usage. I'll have to kill the Powershell process to free up the memory. How to prevent this huge memory usage?

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Try

 [GC]::Collect()

That enforces garbage collection

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It seems that there is a memory leak in Get-Content.

[GC]::Collect didn't work in our case when loading ~6000 documents and we had to use a StreamReader instead:

$sr = New-Object System.IO.StreamReader($filepath)

...

$sr.Dispose()