On Thu, Nov 07, 2002 at 07:38:15AM -0500, Ed Tomlinson wrote:
> Hi,
> 
> Take a look at the following histograms.  It would seem that my ds is 
> specialized in 2 and 5.  I am not currently getting requests for these
> keys in anything other than a random distribution.  This was not the case
> yesterday when my node had been up for several days with the same ip.
> 
> When does a node (not my node but those quering it) lose its info on
> what it thinks my specization is?  Suspect that this happens if a node
> is down for an hour or so and its IP changes.  If this is correct, 
> connecting specialization info to the name (which is in freenet.conf) 
> would make more sense - it also might be a good idea to cache the info 
> on disk.
> 
> This could explain why after an IP address switch traffic is very 
> much reduced for several hours.  If info on specialization is lost, it
> would also tend to produce DNFs as we not using a directed search of
> the key space.
The network loses the node when it changes IP address, unless you use
dyndns or other dynamic DNS service to provide a constant IP address.
Which you really ought to do for a permanent node.
> 
> Comments?
> Ed Tomlinson 
> 
> Histogram of requested keys.
> This count has nothing to do with keys in your datastore
> Nov 7, 2002 7:29:20 AM
> keys: 2512
> scale factor: 0.2327272742986679 (This is used to keep lines < 64 characters)
> 
>    0 |====================================
>    1 |========================================
>    2 |====================================================
>    3 |================================
>    4 |==============================
>    5 |========================
>    6 |==============
>    7 |==================
>    8 |===============================
>    9 |=========================
>    a |=================================
>    b |=============================================
>    c |=================================================
>    d |======================================
>    e |================================================================
>    f |==============================================
> 
> Histogram of keys in in fred's data store
> These are the keys to the data in your node's local cache (DataStore)
> Nov 7, 2002 7:29:52 AM
> keys: 6766
> scale factor: 0.06701570749282837 (This is used to keep lines < 64 characters)
> 
>    0 |========================
>    1 |====================
>    2 |================================================================
>    3 |=============================
>    4 |===========================
>    5 |==============================================
>    6 |===========================
>    7 |=======================
>    8 |=======================
>    9 |========================
>    a |======================
>    b |======================
>    c |=====================
>    d |=========================
>    e |=========================
>    f |=======================
> 
> Histogram of successful externally requested keys.
> This count has nothing to do with keys in your datastore
> Nov 7, 2002 7:30:18 AM
> keys: 281
> scale factor: 1.0 (This is used to keep lines < 64 characters)
> 
>    0 |=============================
>    1 |====================
>    2 |=========================
>    3 |=====
>    4 |===================
>    5 |=========
>    6 |===========
>    7 |==============
>    8 |===================
>    9 |==========
>    a |===================
>    b |==========
>    c |=====================
>    d |===================
>    e |=======================
>    f |============================
> 
> Probability of success of an incoming request
> Nov 7, 2002 7:30:40 AM
> 0 | 0.18589744
> 1 | 0.11494253
> 2 | 0.1091703
> 3 | 0.035460994
> 4 | 0.13970588
> 5 | 0.083333336
> 6 | 0.16666667
> 7 | 0.1627907
> 8 | 0.13669065
> 9 | 0.09090909
> a | 0.13013698
> b | 0.051282052
> c | 0.098130845
> d | 0.11309524
> e | 0.08303249
> f | 0.13861386
> 
> 
> 
> 
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> devl at freenetproject.org
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> 

-- 
Matthew Toseland
toad at amphibian.dyndns.org
amphibian at users.sourceforge.net
Freenet/Coldstore open source hacker.
Employed full time by Freenet Project Inc. from 11/9/02 to 11/11/02.
http://freenetproject.org/
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