Using kexec to speed-up reboot | UbuCon Asia 2021

Speaker: Juhyung Park kexec loads a new kernel image without going through the hardware’s initialization stage, drastically speeding up the reboot process. In this lightning talk, pros and cons of kexec will be listed along with how-to instructions on using kexec on Ubuntu 20.04. We’re currently using kexec to speed up our development and successfully reduced the reboot time from 2 minutes to 10 seconds on a server machine. https://2021.ubucon.asia/sessions/using_kexec_to_speed_up_reboot/