Re: [Haskell-cafe] memory usage in repeated reading of an external program's output

Andrea Rossato wrote:

Still I do not understand you reference to the leak problem. Could you please elaborate a bit?

The runProcess function returns a ProcessHandle. If you don't call waitForProcess on that handle, you'll leak those handles. On Unix-like systems, this means you'll accumulate zombie processes and potentially fill your process table, DoSing your machine.