On Thu 11 Jun 2009 08:48, Nicolas Ferre pondered: > Aras Vaichas : > > * what is your boot time? What is the time from power-on to kernel > > running, how long does the kernel take to run until init starts, and > > how long does init take? [snip] > That said, here are numbers from our not optimized demo > (AT91Bootstrap+u-boot+linux+buildroot): > - ~6s to Linux (can certainly be optimized) > - ~+2s to init > - ~+5s to login (here also) Holy long boot times batman. For a sub 1 second (973ms) boot (to userspace - end of the /etc/rc file), have a look at: https://docs.blackfin.uclinux.org/doku.php?id=fast_boot_example It also includes a 421ms for a minimal kernel. No magic - just careful optimisation of the BootROM, U-Boot, and the kernel. Some of the tricks we do are architecture independent, and should be able to be applied to any system. Your milage may vary - depending on your distribution, and your architecture. -Robin -- To unsubscribe from this list: send the line "unsubscribe linux-embedded" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
