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A comment on 24-core CPU and I can’t move my mouse (2017). Parent comment

Re:24-core CPU and I can’t move my mouse (2017) by dezgeg on Thursday December 22, 2022 @01:48PM (#34096880)
Sure, on the wire USB is a polling protocol. But the polling is done by the host controller hardware, which will raise an interrupt just like PS/2 whenever the device responds to the polling as having data available.
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Re:24-core CPU and I can’t move my mouse (2017) by neonbeige on Thursday December 22, 2022 @02:58PM (#34097824)
The polling by the host controller is still limited to happening once every bInterval period as specified by the device, which for mouse/keyboard will be at least a few milliseconds, v.s. the old school PS2 style mice which would send hardware interrupts straight to the processor.
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Re:24-core CPU and I can’t move my mouse (2017) by dezgeg on Thursday December 22, 2022 @04:08PM (#34098710)
Yes, but that sort of 'delay' will be there all the time, with no relation to the system being loaded (like the top commenter is claiming).
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