README.md

Nebula Measurement Results Calendar Week 41 - 2023

Table of Contents

• Nebula Measurement Results Calendar Week 41 - 2023
  • Table of Contents
  • General Information
    • Protocols
    • Crawls
      • Overall
      • Classification
      • Agents
      • Errors
      • Total Peer IDs Discovered Classification
      • Protocols
  • Churn
  • Inter Arrival Time
  • Agent Version Analysis
    • Overall
    • Parity Polkadot
    • Moonbeam Parachain Collator
    • Robonomics Network Parachain Collator
    • Polkadot parachain
    • Classification
  • Geolocation
    • Unique IP Addresses
    • Classification
    • Agents
  • Datacenters
    • Overall
    • Classification
    • Agents
    • Peer Classification

General Information

The following results show measurement data that were collected in calendar week 41 in 2023 from 2023-10-09 to 2023-10-16.

• Number of crawls 336
• Number of visits 8,636,495

  Visiting a peer means dialing or connecting to it. Every time the crawler or monitoring process tries to dial or connect to a peer we consider this as visiting it. Regardless of errors that may occur.

• Number of unique peer IDs visited 17,528
• Number of unique peer IDs discovered in the DHT 17,328
• Number of unique IP addresses found 8,769

Timestamps are in UTC if not mentioned otherwise.

Protocols

Newly discovered protocols:

• /91b171bb158e2d3848fa23a9f1c25182fb8e20313b2c1eb49219da7a70ce90c3/collation/2 (2023-10-13 15:46:32)
• /91b171bb158e2d3848fa23a9f1c25182fb8e20313b2c1eb49219da7a70ce90c3/validation/2 (2023-10-13 15:46:32)

Crawls

Overall

Classification

Agents

Only the top 10 "Parity Polkadot" versions appear in the right graph (due to lack of colors) based on the average count in the time interval.

Errors

Total Peer IDs Discovered Classification

In the specified time interval from 2023-10-09 to 2023-10-16 we visited 17,528 unique peer IDs. All peer IDs fall into one of the following classifications:

Classification	Description
offline	A peer that was never seen online during the measurement period (always offline) but found in the DHT
dangling	A peer that was seen going offline and online multiple times during the measurement period
oneoff	A peer that was seen coming online and then going offline only once during the measurement period
online	A peer that was not seen offline at all during the measurement period (always online)
left	A peer that was online at the beginning of the measurement period, did go offline and didn't come back online
entered	A peer that was offline at the beginning of the measurement period but appeared within and didn't go offline since then

Protocols

Churn

Both graphs exclude peers that were online the whole time. You can read this graph as: if I see a peer joining the network, what's the likelihood for it to stay X hours in the network.

Inter Arrival Time

Agent Version Analysis

Overall

Includes all peers that the crawler was able to connect to at least once: dangling, online, oneoff, entered. Hence, the total number of peers is lower as the graph excludes offline and left peers (see classification).

Parity Polkadot

Moonbeam Parachain Collator

Robonomics Network Parachain Collator

Polkadot parachain

Classification

The classifications are documented here.

Geolocation

Unique IP Addresses

This graph shows all IP addresses that we found from 2023-10-09 to 2023-10-16 in the DHT and their geolocation distribution by country.

Classification

The classifications are documented here. The number in parentheses in the graph titles show the number of unique peer IDs that went into the specific subgraph.

Agents

Datacenters

Overall

This graph shows all IP addresses that we found from 2023-10-09 to 2023-10-16 in the DHT and their datacenter association.

Classification

The classifications are documented here. Note that the x-axes are different.

Agents

The number in parentheses in the graph titles show the number of unique peer IDs that went into the specific subgraph.

Peer Classification

Classification	Description
offline	A peer that was never seen online during the measurement period (always offline) but found in the DHT
dangling	A peer that was seen going offline and online multiple times during the measurement period
oneoff	A peer that was seen coming online and then going offline only once during the measurement period
online	A peer that was not seen offline at all during the measurement period (always online)
left	A peer that was online at the beginning of the measurement period, did go offline and didn't come back online
entered	A peer that was offline at the beginning of the measurement period but appeared within and didn't go offline since then