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Re: very common kernel modules slow down the boot process



Harald Hoyer wrote:
Dennis Jacobfeuerborn wrote:
Harald Hoyer wrote:
Compiling these modules, which are loaded on nearly every PC, in the
kernel cuts down my boot time from 42s to 32s on my computer:

ata_generic
ata_piix
...
sr_mod
uhci_hcd

Does the boot time decrease depending on the number of modules you
include in the kernel? Maybe it's just one or a few modules that make
up the bulk of that time.

to be tested. was just a rough guess of the most common modules,
compiled and measured.


Also should configuring these bits as external modules really have
this much of an impact on the boot time?

yep. nash, udev, rc.sysinit.. all wait on module loading

But 10s or 25% of boot time just for loading the modules? That sounds quite bad. Maybe instead of moving the modules into the kernel it would be better to find out why exactly the loading takes so long and to look at possible optimizations.

Regards,
  Dennis


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