chore(l1): instrument add_block_pipeline to write profile info in profile.pb

Cargo.toml

@@ -120,6 +120,8 @@ indexmap = { version = "2.11.4" }
 
 rocksdb = { version="0.24.0", default-features = false, features = ["bindgen-runtime"] }
 
+pprof = { version = "0.15", features = ["cpp", "protobuf-codec"] }
+
 [patch.crates-io]
 secp256k1 = { git = "https://github.com/sp1-patches/rust-secp256k1", tag = "patch-0.30.0-sp1-5.0.0" }
 

crates/blockchain/Cargo.toml

@@ -25,6 +25,7 @@ tokio = { workspace = true, features = ["time", "rt"] }
 tokio-util.workspace = true
 
 ethrex-metrics = { path = "./metrics", default-features = false }
+pprof.workspace = true
 
 [dev-dependencies]
 serde_json.workspace = true

crates/blockchain/blockchain.rs

@@ -37,6 +37,7 @@ use ethrex_vm::backends::levm::db::DatabaseLogger;
 use ethrex_vm::{BlockExecutionResult, DynVmDatabase, Evm, EvmError};
 use mempool::Mempool;
 use payload::PayloadOrTask;
+use pprof::protos::Message;
 use rustc_hash::FxHashMap;
 use std::collections::hash_map::Entry;
 use std::collections::{BTreeMap, HashMap};
@@ -833,6 +834,12 @@ impl Blockchain {
     }
 
     pub fn add_block_pipeline(&self, block: Block) -> Result<(), ChainError> {
+        use std::io::Write;
+
+        let guard = pprof::ProfilerGuardBuilder::default()
+            .frequency(99997)
+            .build()
+            .unwrap();
         let (res, account_updates_list, merkle_queue_length, instants) =
             self.execute_block_pipeline(&block)?;
 
@@ -863,9 +870,16 @@ impl Blockchain {
                 instants,
             );
         }
+        if let Ok(report) = guard.report().build() {
+            let mut file = std::fs::File::create("profile.pb").unwrap();
+            let profile = report.pprof().unwrap();
+
+            let mut content = Vec::new();
+            profile.write_to_vec(&mut content).unwrap();
+            file.write_all(&content).unwrap();
+        }
         result
     }
-
     #[allow(clippy::too_many_arguments)]
     fn print_add_block_logs(
         gas_used: u64,