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    SubjectRe: [PATCH 0/2] Kexec jump: The first step to kexec base hibernation
    Date
    On Saturday, 14 July 2007 10:33, david@lang.hm wrote:
    > by the way, a data point on kernel sizes
    >
    > -rw-r--r-- 1 root root 864648 Jul 14 00:53 vmlinuz.2.6.22.1.hibernate
    > -rw-r--r-- 1 root root 659496 Jul 14 01:17 vmlinuz.2.6.22.1.hibernate.stripped
    > -rw-r--r-- 1 root root 3948168 Jul 14 01:10 vmlinuz.2.6.22.1.running
    >
    > the running one matches the config I'm running on my home server, the
    > hibernate is a pretty stripped down version, and the stripped is close to
    > a minimum (including turning off printk and BUG()). All three are with all
    > drivers built-in, no module support.
    >
    > this is on a amd64 64 bit system
    >
    > configs are available if anyone cares, the point is how much smaller a
    > kernel could be if it doesn't need all the stuff that you put in your main
    > kernel. In my case this includes not enabling the 3-ware card that holds
    > my 12-disk raid array, instead the hibernate image would be stored on one
    > of the scsi drives attached to the adaptec 78xx card.
    >
    > I expect that on a normal desktop/laptop with more features (like sound)
    > the savings could be even more significant

    But the kernel needs some data to work too (a 'struct page' for each memory
    page etc.).

    Greetings,
    Rafael


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