5 sec boot

NoiseEHC NoiseEHC at freemail.hu
Sun Oct 5 16:50:19 EDT 2008

> To what end?  AFAIK the zlib decompression (both in OFW and in the OS) 
> is not one of the primary problem areas.
Changing fs read from CPU bound to IO bound would change a lot of 
things, for example the boot could utilize a little bit of more 
concurrency. Unfortunately we will only see its effect when the code is 
written (or we will see that it does not help). It is not a problem area 
but first there are projects which would gain on this speed (like etoys 
loading AFAIK), and second every speed optimization (like boot time and 
activity launch time) should take into consideration the faster reading 
speed (which is theoretical at this point).
See, I am NOT suggesting that you should waste time on these 
"nonproblems" but I am not a Linux programming expert so I simply cannot 
help you at this time (finishing 8.2.0) so I spend my (currently not 
existing) time on these "nonproblem" projects.
>> Where is that Security hash's code?
> The computation code is at http://dev.laptop.org/git?p=bios-crypto .  
> It is based on LibTomCrypt.
> The specific hashes and signatures that we use are detailed in the 
> "Computation" column of 
> http://wiki.laptop.org/go/Firmware_security#Summary
> The security computation code has undergone an audit by outside 
> security experts.  Any changes to the core code would require an 
> additional audit.
Exactly which algorithm does the firmware use and how much data does it 
hash? Just out of curiosity...

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