ZChains Whitepaper
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  1. Additional Features

Network stress testing

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Last updated 10 months ago

Prerequisites

This guide assumes that:

  • You have a working ZChains network up and running

  • Both your JSON-RPC and GRPC endpoints are reachable

Overview

The ZChains Loadbot is a helper utility that is meant to stress test a ZChains network.

Currently, it supports 2 modes:

  • transfer - mode that does stress testing using fund-transfer transactions. [Default].

  • deploy - mode that deploys specified smart contracts with each transaction.

Transfer Mode

The transfer mode assumes that there is a sender account that has initial funds to conduct the loadbot run.

The sender's account address and private key need to be set in the environment variables:

# Example
export LOADBOT_0x9A2E59d06899a383ef47C1Ec265317986D026055=154c4bc0cca942d8a0b49ece04d95c872d8f53d34b8f2ac76253a3700e4f1151

Deploy Mode

The deploy mode conducts contract deployment with each new transaction in the loadbot run. The contract being deployed can be specified using , or if the contract path is omitted, a default Greeter.sol is used instead.

Terminology

This section covers some basic terminology regarding the loadbot configuration.

  • count - The number of transactions to be submitted in the specified mode

  • tps - The number of transactions that should be submitted to the node per second

Start the loadbot

As an example, here is a valid command you can use to run the loadbot using two premined accounts:

Zchains loadbot  --jsonrpc http://127.0.0.1:10002 --grpc-address 127.0.0.1:10000 --sender 0x9A2E59d06899a383ef47C1Ec265317986D026055 --count 2000 --value 0x100 --tps 100

You should get a result similar to this on your terminal :

=====[LOADBOT RUN]=====

[COUNT DATA]
Transactions submitted = 2000
Transactions failed    = 0

[TURN AROUND DATA]
Average transaction turn around = 3.490800s
Fastest transaction turn around = 2.002320s
Slowest transaction turn around = 5.006770s
Total loadbot execution time    = 24.009350s

[BLOCK DATA]
Blocks required = 11

Block #223 = 120 txns
Block #224 = 203 txns
Block #225 = 203 txns
Block #226 = 202 txns
Block #227 = 201 txns
Block #228 = 199 txns
Block #229 = 200 txns
Block #230 = 199 txns
Block #231 = 201 txns
Block #232 = 200 txns
Block #233 = 72 txns
specific flags
contract