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128 points ksec | 1 comments | 18 Jan 25 19:27 UTC | HN request time: 0.263s | source

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Havoc ◴[19 Jan 25 01:46 UTC] No.42752917[source]▶

I still don’t quite get how the cpu knows what is low priority or background. Or is that steered at OS level a bit like cpu pinning ?

replies(2): >>42752924 #>>42753121 #

computerliker ◴[19 Jan 25 01:48 UTC] No.42752924[source]▶

>>42752917 #

https://en.m.wikipedia.org/wiki/Scheduling_(computing)

replies(1): >>42755283 #

Havoc ◴[19 Jan 25 09:02 UTC] No.42755283[source]▶

>>42752924 #

Right so how does the scheduler know what’s low priority?

replies(1): >>42758920 #

1. ahoka ◴[19 Jan 25 17:08 UTC] No.42758920[source]▶

>>42755283 #

I thought this was actually a good question, so I have trued to look it up. If I understand correctly the CPU tells the scheduler! I could not find exactly how though, maybe an MSR?

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