Process.Start() creates additional process named conhost.exe

[dooann]

I found that the Process.Start() creates additional process named conhost.exe for each call while the subprocess module in python is not.

Each instance of conhost.exe consumes approximately 5.7 MB of memory, which limits the level of concurrency.

It also affects the pwsh scripts. Actually, I found this issue when writing the pwsh script.

My questions are:

1. Is conhost.exe necessary for starting a process? If so, why?
2. Can we remove conhost.exe or provide an option to control its behavior?

Thanks.

var info = new ProcessStartInfo("ping") {
    RedirectStandardOutput = true,
    RedirectStandardError = true,
    UseShellExecute = false,
    CreateNoWindow = true,
    Arguments = "google.com"
};

var process = Process.Start(info);

.Net version: 8.0.401

subprocess.run(['ping', 'google.com'])

Python version: Python 3.12.3

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[dooann]

OK. The solution is set CreateNoWindow = false.

Reference: https://stackoverflow.com/questions/53328013/launch-windows-executable-without-conhost

[stephentoub]

Closing as answered