Speaking of "better", the author mentioned that his laptop works less from battery in OpenBSD than on Linux (3.5 hours vs 5 hours) and applications run slower.

Speaking of "better", the author mentioned that his laptop works less from battery in OpenBSD than on Linux (3.5 hours vs 5 hours) and applications run slower. Unless there is a problem with OpenBSD drivers or CPU governing profiles, for me it means "worse" actually. I was always curious why we don't have a simplified kernel for desktop/laptop use. I imagine 90% of people are running their computers in almost single user mode. E.g. at the moment my Debian, except my main username, also runs programs as root, systemd*, Debian-gdm, messagebus, some of which might be merged either with root, or with my main account. All the security features of the kernel (OpenBSD or Linux) are actually not used that much, so we could in principle make software faster and battery life longer just by "optimizing" that features. Same is true for clusters, VM hosts, embedded Linux. It seems we overkill with security, providing fake sense of protection, while giving up on important metrics: execution time, battery life, memory usage, bandwidth, etc. At the moment the biggest security concern of mine is not the services running on my laptop in background, even with open tcp/udp ports, but the fact that my browser is running under the same username, which I use to access ssh keys, ssh-agent sockets in /tmp, password manager's files, photos, etc. Browser executes arbitrary code from the unknown to me sources all the time and one day someone will break the sandbox-ing and copy my files out.