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Node benchmark

This repository contains a load test for lightning node software.

The test creates a setup with a bitcoind regtest node and two connected lightning nodes instances.

A test application spins up 100 workers that continously request an invoice from one instance and pay it from the other one.

Output is the number of transaction that are settled per second (TPS) and the average payment latency.

How to run

./run.sh <configuration>

The following configurations are available:

Configuration Implementation Backend Channels Workers Options
lnd-bbolt lnd 0.12.1 bbolt 10 100
lnd-bbolt-keysend lnd 0.12.1 bbolt 10 100 keysend
lnd-etcd lnd 0.12.1 single etcd instance 10 100
lnd-etcd-cluster lnd 0.12.1 three-instance etcd cluster 10 100
clightning c-lightning 0.9.3 sqlite 1 [1] 100
eclair eclair 0.6.1 sqlite 10 100
eclair-postgres eclair 0.6.1 postgres 10 100

1 Multiple channels are not supported in c-lightning

Results

Below are the test results after 10,000 payments on the following machine:

  • Google Cloud n2d-standard-8 instance (8 vCPUs, 32 GB memory)
  • 100 GB zonal pd-ssd with ext4 filesystem
  • Ubuntu 20.04 LTS
Configuration Transactions / sec Avg latency (sec)
eclair 89 1.1
eclair-postgres 46 2.1
clightning 61 1.6
lnd-bbolt-keysend 35 2.8
lnd-bbolt 33 3.0
lnd-etcd 4 29.2
lnd-etcd-cluster 4 31.8

Profiling

For lnd nodes, a cpu profile can be extracted for further analysis. The sender node profiler is reachable through port 5000 on the host. The receiver node profiler is available at port 5001.

To display the profile in a browser, run:

go tool pprof -http 0.0.0.0:7777 http://localhost:5000/debug/pprof/profile

Configuration

The loadtest container reads test parameters from the file loadtest.yml the following parameters are available:

  • paymentAmountMsat: the test amount that is paid
  • processes: the number of parallel processes
  • channels: the number of channels between the two test nodes
  • channelCapacitySat: capacity of the channel(s)

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