warning to fossbros
@shahaan Something's spinning your cpu briefly... it's the kind of thing a poorly written driver would do, or a periodic job like update check solving, or wlan reassociation. These kind of things can happen on any os. But on linux, you generally have the sources for everything, and devs are more willing to share their knowledge.
On linux you can use powertop, look in /proc interrupts, check dmesg or journalctl for anything at the same time, look with perf top to get clues.