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Cake day: June 18th, 2023

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  • Maybe, but Microsoft’s competitors are doing a lot better on the battery life front so they’re leaving a lot on the table for competitors to swoop in by not fixing their sleep and wake issues. It was a big consideration for the company I work at to go with Apple machines because they do lots of field work and need the machines running all day. I can say from experience it’s incredibly frustrating to leave home with my MS Surface on a full charge only for it to have majority of the battery drained by the time I pull it out of my backpack due to waking up when it wasn’t supposed to.



  • It will prefetch the instructions and put into the pipeline the branch it thinks is mostly likely. It may do ahead-of-time speculative execution on certain instructions but not always. If it missed the correct branch it will flush the pipeline and start the pipeline over again from the correct branch. Afaik it doesn’t execute or prefetch both branches. The other guy is saying it does but that doesn’t really gel with my own recollection or the Wikipedia article he cited. You can see some further discussion that suggests only one branch gets prefetched here here and here. Reasons cited for only predicting one branch are: 1) Two pipelines with all the associated circuitry to look ahead, decode, and speculatively execute is incredibly expensive in terms of both processing requirements and die real estate. 2) Caching both would thrash your caches with new data constantly. 3) Modern branch prediction is already so accurate, there’s really no need for two pipelines anyways.




  • I mean you could certainly have both but Linux treating its terminal as a first class interface is a big killer feature of Unix/Linux I think and why it’s still used in the server/dev world so much. Having a command line interface that’s not an afterthought, fully scriptable, and can be automated is very convenient for large tasks that need to be chained together whereas on Windows you have things like PowerShell where not every program you want to do things with in PowerShell has a way to interact with PowerShell, since in Windows you have the opposite problem of GUI being the only first class interface. I think I’d be worried that if you de-emphasized the terminal more you’d get the weird situation that happened to Windows and PowerShell whereas it’s usually not super hard to build your own GUI around an open source terminal program. A lot of people aren’t especially motivated to do that so some programs don’t have GUIs, but if you’re feeling like more programs need one then go for it.