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Cake day: June 12th, 2023

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  • “Free” memory is actually usually used for cache. So instead of waiting to get data from the disk, the system can just read it directly from RAM after the first access. The more RAM you have, the more free space you’ll have to use for cache. My machine often has over 20GB of RAM used as cache. You can see this with free -m. IIRC both Gnome and KDE’s system managers also show that now.



  • We don’t know whether they evolved these chemicals to prevent being eaten by animals though. People have tested spicy (capsaicin based) foods with mice, and found that mice actually seemed to like or not really react to spicy foods. This means that capsaicin did not evolve to protect against rodents like initially thought.

    In fact, we now know that capsaicin is a very powerful antifungal chemical. Chili peppers naturally grow in hot, humid environments where fungi thrive. There also aren’t many rodents in those areas. So the spiciness experienced by mammals like humans is just a side effect that didn’t really affect its evolution.















  • By default it’s per network, but if you enable Developer Options, there is a setting under Networking called “Wi-Fi non-persistent MAC randomization” that randomizes the MAC per connection for networks that have randomization enabled. I am on Android 13 though, so I’m not sure if 12 has this option.