chore(l2): estimate L2 tps

[xqft]

Motivation

To measure the maximum transactions per second that the current L2 can withstand, using a single prover with SP1 backend running on a RTX 4090.

Multiple L2 setups have been tested.

This also adds some tools used to easily test these scenarios

[github-actions]

Lines of code report

Total lines added: 216
Total lines removed: 0
Total lines changed: 216

Detailed view

+-----------------------------------------+-------+------+
| File                                    | Lines | Diff |
+-----------------------------------------+-------+------+
| ethrex/crates/common/config/networks.rs | 179   | +1   |
+-----------------------------------------+-------+------+
| ethrex/tooling/load_test/src/main.rs    | 573   | +215 |
+-----------------------------------------+-------+------+

[xqft]

Don't merge yet, still missing a row in the measures .md

[Copilot]

Pull Request Overview

This PR adds tooling to measure L2 transactions per second (TPS) performance with a single SP1 prover on an RTX 4090. The changes introduce a new TPS load testing mode alongside the existing burst mode, and a genesis file generator for creating test accounts.

Key changes:

• Added continuous TPS load testing capability with configurable rate
• Implemented genesis file and private key generation for testing
• Refactored CLI structure to support subcommands (Load, GenerateGenesis)

Reviewed Changes

Copilot reviewed 5 out of 6 changed files in this pull request and generated 4 comments.

Show a summary per file

File	Description
tooling/load_test/src/main.rs	Refactored CLI to subcommands; added TPS test mode, genesis generator, and improved error handling
tooling/load_test/Cargo.toml	Added dependencies for genesis generation (sha3, serde_json, ethrex-config)
docs/l2/bench/tps.md	Added TPS benchmark documentation with test results and reproduction steps
crates/l2/Makefile	Removed debug log level override for prover
crates/common/config/networks.rs	Added "local-devnet-l2" network support

Comments suppressed due to low confidence (1)

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[xqft]

Don't merge this until reviewed by @mationorato

[MegaRedHand]

#4873 (comment)

[ElFantasma]

This branch is ~4 months old — please rebase on main and verify it compiles before requesting re-review or close it if it's no longer relevant

[ElFantasma]

GenesisAccount.storage is BTreeMap<U256, U256>, but this passes HashMap::new(). This won't compile.

Suggested change

	storage: HashMap::new(),
	storage: Default::default(),

Or explicitly BTreeMap::new() with the appropriate import.

[ElFantasma]

clap::value_parser!(Network) requires Network to implement FromStr (or ValueEnum), but Network only has From<&str>. This won't compile as-is.

Either add impl FromStr for Network in ethrex-config, or use a custom value parser here, e.g.:

value_parser = |s: &str| -> Result<Network, String> { Ok(Network::from(s)) },

[ElFantasma]

tps_load_test runs an infinite loop and never returns Ok(()) — it can only exit via ? propagation or a panic. This means the caller's elapsed-time printout (line ~594) is dead code when LoadType::Tps is selected. Consider either:

• Adding a --duration flag so the loop exits after a set time, or
• Printing periodic stats inside the loop (e.g., every 10s), since the final summary will never be reached.

[ElFantasma]

nit: i64::MAX as u64 is an unusual way to express "maximum willingness to pay". Consider u64::MAX directly, or better yet, fetch the current base fee and apply a multiplier — this avoids potentially overpaying if the load test is ever pointed at a real network.

[ElFantasma]

The "local-devnet-l2" arm is added before the GenesisPath fallback, which is correct. However, note the comment above says "we don't allow to manually specify the local devnet genesis" — this new arm intentionally allows it for the L2 variant. Might be worth updating that comment to clarify the distinction.