What is PID 0?

possiblylinux127 , 10 days ago (edited 10 days ago)

There is no PID 0. I guess I’ll read the article.

Edit: This guy knows things

boatswain , 10 days ago

The tl;dr from the article (which is actually worth a read):

The very short version: Unix PIDs do start at 0! PID 0 just isn’t shown to userspace through traditional APIs. PID 0 starts the kernel, then retires to a quiet life of helping a bit with process scheduling and power management. Also the entire web is mostly wrong about PID 0, because of one sentence on Wikipedia from 16 years ago.

spacetff , 10 days ago

Mr. Anderson, Thank you for your analysis/work and well written treatise, on PID 0. I enjoyed learning more about Linux & Unix and a bit of history thereof as well.

deadbeef79000 , 10 days ago

I read that in Agent Smith’s voice.

bruhduh , 10 days ago

Happy cake day

deltapi , 10 days ago

The last time my community found a PID.0 in our midst, he was beaten downtown in broad daylight by over a dozen assailants, no witnesses.

possiblylinux127 , 10 days ago

Plot twist: the assailants were holograms

jwt , 11 days ago

ITT: people giving wrong answers to a post linked to a blog that answers the question ‘What is PID 0?’

NeoNachtwaechter , 11 days ago

Nonsense, yes. Isn’t that what low effort posts (like nothing else but a link) are made for?

CsXGF8uzUAOh6fqV , 10 days ago

You can call it low effort, but Lemmy is a “link aggregator”. Even just sharing links has its value.

Cyber , 10 days ago

Link aggregation

xthexder , 10 days ago

Wrong kind of link 😜

admin , 10 days ago (edited 10 days ago)

For me it just gives an error post0 failed to load.

Edit: that’s probably my lemmy client trying to approach this blog as though it were a lemmy instance 🤦‍♂️

Shanedino , 11 days ago

It’s proportion integral derivative control of some functionality. Fans can use it.

lurch , 11 days ago

only fans? 😆

admin , 11 days ago

It’s unused, you can go ahead and kill it.

possiblylinux127 , 10 days ago

Kernel: dies