Replacing nodes in subnet yinp6

Governance
1

Replace nodes in subnet yinp6

Motivation:

  • replacing node s52il-lowsg-eip4y-pt5lv-sbdpb-vg4gg-4iasu-egajp-yluji-znfz3-2qe to optimize network topology
  • replacing node cjiry-m7wev-s6adg-3oqev-2g74r-wmtlj-ttdbj-abwts-rtwlj-6lxts-dqe to optimize network topology

Calculated potential impact on subnet decentralization if replacing:

  • 1 additional node would result in: (gets better) the average log2 of Nakamoto Coefficients across all features increases from 1.9932 to 2.0575 (solution penalty: 10)
  • 2 additional nodes would result in: (gets better) the average log2 of Nakamoto Coefficients across all features increases from 2.0575 to 2.1745

Based on the calculated potential impact, replacing 2 additional nodes to improve optimization

Note: the heuristic for node replacement relies not only on the Nakamoto coefficient but also on other factors that iteratively optimize network topology.
Due to this, Nakamoto coefficients may not directly increase in every node replacement proposal.
Code for comparing decentralization of two candidate subnet topologies is at:

Note: the information below is provided for your convenience. Please independently verify the decentralization changes rather than relying solely on this summary.
Here is an explaination of how decentralization is currently calculated,
and there are also instructions for performing what-if analysis if you are wondering if another node would have improved decentralization more.

Decentralization Nakamoto coefficient changes for subnet yinp6-35cfo-wgcd2-oc4ty-2kqpf-t4dul-rfk33-fsq3r-mfmua-m2ngh-jqe:

    node_provider: 5.00 -> 5.00    (+0%)
      data_center: 5.00 -> 5.00    (+0%)
data_center_owner: 5.00 -> 5.00    (+0%)
             area: 4.00 -> 5.00   (+25%)
          country: 2.00 -> 3.00   (+50%)

Mean Nakamoto comparison: 4.20 → 4.60 (+10%)

Overall replacement impact: (gets better) the average log2 of Nakamoto Coefficients across all features increases from 1.9932 to 2.1745

Impact on business rules penalties: 10 → 0

Details

Nodes removed:

  • s52il-lowsg-eip4y-pt5lv-sbdpb-vg4gg-4iasu-egajp-yluji-znfz3-2qe [health: healthy]
  • cjiry-m7wev-s6adg-3oqev-2g74r-wmtlj-ttdbj-abwts-rtwlj-6lxts-dqe [health: healthy]

Nodes added:

  • mswad-oq7wj-5r4yy-b5qoy-cmv7z-wzfb3-ktn6l-rcnrz-mni2f-lsys6-wqe [health: healthy]
  • ulcre-xbhsb-in5ny-xqhwy-nolvb-xzw22-fcp65-jutld-c2pjz-y7ydr-gqe [health: healthy]
    node_provider                                                              data_center            data_center_owner              area                   country        
    -------------                                                              -----------            -----------------              ----                   -------        
    6nbcy-kprg6-ax3db-kh3cz-7jllk-oceyh-jznhs-riguq-fvk6z-6tsds-rqe       1    an1               1    Africa Data Centres  0 -> 1    Bucuresti         1    BE            1
    7at4h-nhtvt-a4s55-jigss-wr2ha-ysxkn-e6w7x-7ggnm-qd3d5-ry66r-cae       1    at2          1 -> 0    Central Tower DC     0 -> 1    Flanders          1    CA            1
    7ryes-jnj73-bsyu4-lo6h7-lbxk5-x4ien-lylws-5qwzl-hxd5f-xjh3w-mqe       1    bu1               1    Cyxtera                   1    Gauteng      0 -> 1    CH       3 -> 2
    bvcsg-3od6r-jnydw-eysln-aql7w-td5zn-ay5m6-sibd2-jzojt-anwag-mqe       1    fr2               1    Datacenter United         1    Geneva            1    DE            1
    dhywe-eouw6-hstpj-ahsnw-xnjxq-cmqks-47mrg-nnncb-3sr5d-rac6m-nae  0 -> 1    ge1               1    Datasite             1 -> 0    Georgia      1 -> 0    IN            1
    eipr5-izbom-neyqh-s3ec2-52eww-cyfpg-qfomg-3dpwj-4pffh-34xcu-7qe       1    hu1               1    Equinix                   1    Hesse             1    PL       0 -> 1
    i7dto-bgkj2-xo5dx-cyrb7-zkk5y-q46eh-gz6iq-qkgyc-w4qte-scgtb-6ae       1    jb2          0 -> 1    Everyware                 1    Maribor           1    RO            1
    rbn2y-6vfsb-gv35j-4cyvy-pzbdu-e5aum-jzjg6-5b4n5-vuguf-ycubq-zae       1    lv1               1    Flexential                1    Navi Mumbai       1    SG            1
    sma3p-ivkif-hz7nu-ngmvq-ibnjg-nubke-zf6gh-wbnfc-2dlng-l3die-zqe  1 -> 0    mb1               1    HighDC                    1    Nevada            1    SI            1
    sqhxa-h6ili-qkwup-ohzwn-yofnm-vvnp5-kxdhg-saabw-rvua3-xp325-zqe       1    nm1               1    M247                      1    Ontario           1    US       3 -> 2
    ucjqj-jmbj3-rs4aq-ekzpw-ltjs3-zrcma-t6r3t-m5wxc-j5yrj-unwoj-mae  1 -> 0    sg1               1    Nine.Ch              1 -> 0    Singapore         1    ZA       0 -> 1
    ulyfm-vkxtj-o42dg-e4nam-l4tzf-37wci-ggntw-4ma7y-d267g-ywxi6-iae       1    to1               1    Posita.si                 1    Texas             1                   
    unqqg-no4b2-vbyad-ytik2-t3vly-3e57q-aje2t-sjb5l-bd4ke-chggn-uqe  0 -> 1    wa2          0 -> 1    Rivram                    1    Warszawa     0 -> 1                   
    wdjjk-blh44-lxm74-ojj43-rvgf4-j5rie-nm6xs-xvnuv-j3ptn-25t4v-6ae       1    zh2               1    TRG                       1    Zurich       2 -> 1                   
    wdnqm-clqti-im5yf-iapio-avjom-kyppl-xuiza-oaz6z-smmts-52wyg-5ae       1    zh4          1 -> 0    Telin                     1

Business rules check results before the membership change:

  • Country CH controls 3 of nodes, which is higher than target of 2 for the subnet. Applying penalty of 10.

Proposal id 134260

2

Voted to adopt proposal #134260.

The proposal replaces two healthy Active nodes s52il form Zurich4, Switzerland and cjiry from Atlanta2, US in order to optimize network topology. Decentralization changes get better with both US and Switzerland having one less node and with the addition of nodes mswad from Warsaw2, Poland and ulcre from Gauteng2, South Africa also increasing the area factor.

3

Review from subnet thread:

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