perf(levm): flamegraphs to l2 node for evm (#1616)

**Motivation**

Generate flamegraph of ethrex client in order  to test levm performance.

**Description**

Add the flag -c or --contract to the ethrex_l2 cli to send tx to a
contract with bytecode to test the evm.

Steps to run the flamegraph (2 terminals are needed):
1. `make start-node-with-flamegraph`
2. `make load-node`

---------

Co-authored-by: fborello-lambda <federicoborello@lambdaclass.com>
Co-authored-by: Federico Borello <156438142+fborello-lambda@users.noreply.github.com>

Makefile

@@ -162,3 +162,37 @@ stats:
 	cd crates/vm/levm && make run-evm-ef-tests QUIET=true && echo
 	make hive-stats
 	cargo run --quiet --release -p hive_report
+
+install-cli: ## 🛠️ Installs the ethrex-l2 cli
+	cargo install --path cmd/ethrex_l2/ --force
+
+start-node-with-flamegraph: rm-test-db ## 🚀🔥 Starts an ethrex client used for testing
+	@if [ -z "$$L" ]; then \
+		LEVM=""; \
+		echo "Running the test-node without the LEVM feature"; \
+		echo "If you want to use levm, run the target with an L at the end: make <target> L=1"; \
+	else \
+		LEVM=",levm"; \
+		echo "Running the test-node with the LEVM feature"; \
+	fi; \
+	sudo CARGO_PROFILE_RELEASE_DEBUG=true cargo flamegraph \
+	--bin ethrex \
+	--features "dev$$LEVM" \
+	--  \
+	--network test_data/genesis-l2.json \
+	--http.port 1729 \
+	--datadir test_ethrex
+
+load-node: install-cli ## 🚧 Runs a load-test. Run make start-node-with-flamegraph and in a new terminal make load-node
+	@if [ -z "$$C" ]; then \
+		CONTRACT_INTERACTION=""; \
+		echo "Running the load-test without contract interaction"; \
+		echo "If you want to interact with contracts to load the evm, run the target with a C at the end: make <target> C=1"; \
+	else \
+		CONTRACT_INTERACTION="-c"; \
+		echo "Running the load-test with contract interaction"; \
+	fi; \
+	ethrex_l2 test load --path test_data/private_keys.txt -i 100 -v  --value 1 $$CONTRACT_INTERACTION
+
+rm-test-db:  ## 🛑 Removes the DB used by the ethrex client used for testing
+	sudo cargo run --release --bin ethrex -- removedb --datadir test_ethrex

cmd/ethrex_l2/src/commands/test.rs

@@ -3,7 +3,10 @@ use bytes::Bytes;
 use clap::Subcommand;
 use ethereum_types::{Address, H256, U256};
 use ethrex_blockchain::constants::TX_GAS_COST;
-use ethrex_l2_sdk::eth_client::{eth_sender::Overrides, EthClient};
+use ethrex_l2_sdk::{
+    calldata::{self, Value},
+    eth_client::{eth_sender::Overrides, EthClient},
+};
 use keccak_hash::keccak;
 use secp256k1::SecretKey;
 use std::{
@@ -50,6 +53,13 @@ pub(crate) enum Command {
             help = "Prints each transaction."
         )]
         verbose: bool,
+        #[clap(
+            short = 'c',
+            long = "contract",
+            default_value = "false",
+            help = "send value to address with contract"
+        )]
+        contract: bool,
     },
 }
 
@@ -67,6 +77,7 @@ async fn transfer_from(
     value: U256,
     iterations: u64,
     verbose: bool,
+    calldata: Bytes,
     cfg: EthrexL2Config,
 ) -> u64 {
     let client = EthClient::new(&cfg.network.l2_rpc_url);
@@ -94,14 +105,18 @@ async fn transfer_from(
             .build_eip1559_transaction(
                 to_address,
                 address,
-                Bytes::new(),
+                calldata.clone(),
                 Overrides {
                     chain_id: Some(cfg.network.l2_chain_id),
                     nonce: Some(i),
-                    value: Some(value),
+                    value: if calldata.is_empty() {
+                        Some(value)
+                    } else {
+                        None
+                    },
                     max_fee_per_gas: Some(3121115334),
                     max_priority_fee_per_gas: Some(3000000000),
-                    gas_limit: Some(TX_GAS_COST),
+                    gas_limit: Some(TX_GAS_COST * 5),
                     ..Default::default()
                 },
                 10,
@@ -128,12 +143,40 @@ impl Command {
                 value,
                 iterations,
                 verbose,
+                contract,
             } => {
                 if let Ok(lines) = read_lines(path) {
-                    let to_address = match to {
+                    let mut to_address = match to {
                         Some(address) => address,
                         None => Address::random(),
                     };
+                    let calldata: Bytes = if contract {
+                        // This is the bytecode for the contract with the following functions
+                        // version() -> always returns 2
+                        // function fibonacci(uint n) public pure returns (uint) -> returns the nth fib number
+                        let init_code = hex::decode("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")?;
+                        let client = EthClient::new(&cfg.network.l2_rpc_url);
+
+                        let (_, contract_address) = client
+                            .deploy(
+                                cfg.wallet.address,
+                                cfg.wallet.private_key,
+                                init_code.into(),
+                                Overrides::default(),
+                            )
+                            .await?;
+
+                        to_address = contract_address;
+
+                        calldata::encode_calldata(
+                            "fibonacci(uint256)",
+                            &[Value::Uint(100000000000000_u64.into())],
+                        )?
+                        .into()
+                    } else {
+                        Bytes::new()
+                    };
+
                     println!("Sending to: {to_address:#x}");
 
                     let mut threads = vec![];
@@ -144,6 +187,7 @@ impl Command {
                             value,
                             iterations,
                             verbose,
+                            calldata.clone(),
                             cfg.clone(),
                         ));
                         threads.push(thread);
@@ -156,7 +200,6 @@ impl Command {
 
                     println!("Total retries: {retries}");
                 }
-
                 Ok(())
             }
         }

test_data/private_keys.txt

@@ -1,4 +1,3 @@
-0x63b8139bbf84a5a65613e544be239f59f884434462598bd8bfe9f2c9045aa336
 0xe4f7dc8b199fdaac6693c9c412ea68aed9e1584d193e1c3478d30a6f01f26057
 0xb142300756f21d04354cd336fb01138767825d50c1d91cf751236bdd7cf522ab
 0xba73c72b16553dbba5a275f541c06e77dcf7773514898dc0f3ddfe13c44f9e11