alt Hacker News> Why is reserving a megabyte of stack space "expensive"?
Because if you use one thread for each of your 10,000 idle sockets you will use 10GB to do nothing.
So you'll want to use a better architecture such as a thread pool.
And if you want your better architecture to be generic and ergonomic, you'll end up with async or green threads.
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duped • yesterday at 10:59 PM
> you will use 10GB to do nothing.
You don't pay for stack space you don't use unless you disable overcommit. And if you disable overcommit on modern linux the machine will very quickly stop functioning.
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> Because if you use one thread for each of your 10,000 idle sockets you will use 10GB to do nothing.
1.On a system that is handling 10k concurrent requests, the 10GB of RAM is going to be a fraction of what is installed.
2. It's not 10GB of RAM anyway, it's 10GB of address space. It still only gets faulted into real RAM when it gets used.