20% is actualy a lot better then I expected. When you're doing redundant
caching like Freenet is, you have to expect a loss in the ammount of useable
space.
----- Original Message -----
From: "Shu Yan Chan" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Monday, July 02, 2001 11:47 PM
Subject: Re: [freenet-tech] Looking for a research project?
> Long time ago Ian has purposed a research project. At that time, my own
> research project has already begun and was too late to incorporate Ian's
> suggestions into my project. However, my project does in some sense
measure
> the longevity of a document in Freenet (with requests and re-insertions).
> My dissertation are available at:
> http://www.sysoft.fsnet.co.uk/join.pdf
> I am not sure whether the results presented are inline with what one would
> have expected from the Freenet's principals and routing mechanism.
However,
> I was quite shocked while I was doing the simulations. Basically, I found
> that Freenet would only be able to utilise it's storage capacity at around
> 20%, e.g. if all users have altogether shared 100GB of disk space to
> Freenet, then there could only be around 20GB of documents stored in the
> Freenet.
> I originally tried to tidy up the dissertation before making it publicly
> available, unfortunately I can never managed to find the time to do so.
I
> guess all Freenet developers could go straight to chapter 4 of the
> dissertation. For completeness, I am also uploading the simulator I used
> for the simulations:
> http://www.sysoft.fsnet.co.uk/SYSerapis.zip
> (I did not have time to tidy up the source code, so it would probably look
> very messy and inefficient at the moment.)
> And also because of the constraint in time, I did not managed to simulate
> Freenets with a much larger limit of the maximum number of dataStore
entries
> (which would be closer to real world usage)
>
> Any comment should be directed to me, not my supervisor nor my department,
> since I am just a student, not a memeber of staff there, and am solely
> responsible for the dissertation/simulations.
>
> Thanks.
>
> Yours,
> Shu Yan Chan
> [EMAIL PROTECTED]
> P.S. Please cc a copy of your reponses to my e-mail address, as I would
not
> be able to check the mailing list in the coming month.
>
>
> ----- Original Message -----
> From: "Ian Clarke" <[EMAIL PROTECTED]>
> To: <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]>;
> <[EMAIL PROTECTED]>
> Sent: Sunday, April 15, 2001 8:53 PM
> Subject: [freenet-tech] Looking for a research project?
>
> >One important issue is that of document longevity in Freenet. The
> >current approach basically removes documents on the basis of which was
> >least recently accessed, although a bias against large files was
> >introducted in version 0.3.
>
> >So one very important question is how long does a document last in
> >Freenet (assuming no requests for that document), and how is this
> >affected by differences in the size of the document and the HTL with
> >which it was inserted
>
>
> _______________________________________________
> freenet-tech mailing list
> [EMAIL PROTECTED]
> http://lists.freenetproject.org/mailman/listinfo/tech
>
>
_______________________________________________
freenet-tech mailing list
[EMAIL PROTECTED]
http://lists.freenetproject.org/mailman/listinfo/tech
