For things like Final Cut/iMovie with lots of video/audio/misc tracks, it was trivial to saturate the disk with dumb seeks when reading otherwise linear data streams due to a lack of nobs.
I wonder if it was possibly not that you compared the kernels but rather how you chose to express the comparison. For example this bit makes me think you possibly expressed your opinion combatively:
> a dogshit IO scheduler
Perhaps you were more polite in your day-to-day, I don't know. But your language here makes me wonder.
https://www.collinsdictionary.com/us/dictionary/english/some...
So I'm sorry I offended you with my salty language but the evidence suggests I'm far from the only one that went ignored at Apple.
You didn't.
the way you are responding to some one who asked you a pretty mild question (assuming they were personally offended rather than asking about a potential communication issue) suggests there is some validity here.
Sure the phrasing was gentle, but the actual statement was quite offensive, presumptuous, and prudish.
I suspect it’s not that people can’t do the work and more that Apple’s silos mean their already employed engineers are not allowed to try or even talk about it.