[sldev] Cache speed experiment & results...

[Matthew Underwood]

http://en.wikipedia.org/wiki/UUID

There are several standards, some relying solely on a random number.
Given the range of these numbers (128bit), I don't think they would
collide easily (shoot they probably will eventually collide).

On Wed, Jun 4, 2008 at 12:37 PM, Cenji Neutra <cenji.neutra at gmail.com> wrote:
>> From: "Dale Mahalko" <dmahalko at gmail.com>
>> To: "Argent Stonecutter" <secret.argent at gmail.com>
>> Date: Wed, 4 Jun 2008 11:37:09 -0500
>> Subject: Re: [sldev] Cache speed experiment & results...
> [...]
>> It is possible that the GUID distribution is not as truly random as we
>> may think,
> [...]
>
> I've not looked at the source, but if LL implemented the standard for
> UUIDs (aka GUIDs) then they shouldn't be completely random at all.
> UUIDs aren't made up of all random parts - they have components that
> have to be generated in specific ways, only some of which are intended
> to be random.  The original (V1) UUIDs actually contain the network
> card Mac address of the computer that generated it (!)
>
> Look at SL keys - they are all of the form
> xxxxxxxx-xxxx-4xxx-xxxx-xxxxxxxxxxxx for a start - and there are other
> internal consistencies I believe.
>
> It may be that LL didn't follow the standard at all and just made up
> their own system of course.
> -Cenji.
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