more craziness - pre-cache in init scripts.

Alessandro Iurlano alessandro.iurlano at
Fri May 16 11:40:58 CEST 2008

> yes - just loads. yes i know shared libs are loaded once only - and only the
> pages from them loaded as needed. sure if you want to do full block-analysis on
> what pages are mapped in and just read those - wonderful. i'm going for a quick
> and dirty solution. this does not SPEED up boot - not at ALL. it moves IO time
> from later to earlier. it means that once the bootsplash goes away, X, WM<
> application launcher and all that stuff come up much faster so the visible gap
> between bootsplash and "i have a gui up i can now use" is much less. it avoids
> filesystem IO to flash later while these are starting up :) so it's just
> shuffling stuff. yes - even reading more data off disk than we need and it may
> slow down the total boot time - but it will improves its look and feel. so this
> is just to get the whole bootup looking slicker and polished and professional.

I understand what you are trying to do and why. I just wanted to point
out that maybe the gain could be very little if the flash memory speed
is high and that it could be bigger by launching a program that uses
those libs.
Maybe adding LD_BIND_NOW=1 to that program to force the linker resolve
all the symbol could be worth trying.

Anyone has raw numbers about the speed of internal flash memory?

My 2c again.

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