5 sec boot

david at lang.hm david at lang.hm
Sun Oct 5 12:58:17 EDT 2008

On Sun, 5 Oct 2008, NoiseEHC wrote:

>> can you do the hash as you copy it? it should be pretty close to free at 
>> that point (since the CPU is waiting for memory/flash access it can do the 
>> hash calculationwhen it would otherwise be stalled)
> According to my measurements the GeodeLX can fetch a new cache line (32 
> bytes) every 20-25 clocks.
> Unless you can do the hash <2 clocks/byte then you will only earn the looping 
> time (assuming that the hashed blocks fit into the L1 cache).

is that speed reading from ram or from flash?

David Lang

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