Re: [Tails-dev] Quicker memory erasure

intrigeri:
> Hi,
>
> Morosko wrote (31 Mar 2016 09:30:03 GMT) :
>> today I used tails for the first time. Amazing work! But the shutdown took quite
>> a while.. I was running it on my laptop with 16 gigs of ram. Erasing all this seems
>> pretty time waisting to me.
>
> How long does it take for you?
>
>> Wouldn't it be better to log all used memory addresses
>> and clear only those which really were used?
>
> We would need to log all memory addresses that have ever been used
> during a Tails session. Does the Linux kernel provide ways to do so
> without impacting performance too much?
>
> Cheers,
>

Isn't RAM write speed in the range of 20GB/s? If the memory wiping
occured in real mode at the end of computer shutdown without all that
paging stuff, 16gigs would be done in under a second.