test(bench): Playing with flamegraph generation [wip]

Makefile

@@ -52,7 +52,10 @@ fmt: ## Format the code
 .PHONY: bench
 bench: ## Run benchmarks
 	cargo bench --bench bench_main
-#	 cargo bench --bench bench_main -- --verbose
+
+.PHONY: bench-flamegraphs
+bench-flamegraphs: ## Create flamegraphs for the benchmarks
+	cargo bench --bench bench_flamegraphs -- --profile-time 3
 
 .PHONY: bench-report-open
 bench-report-open: ## Open last benchmark report in the browser

crates/rbuilder/Cargo.toml

@@ -107,7 +107,12 @@ built = { version = "0.7.1", features = ["git2", "chrono"] }
 [dev-dependencies]
 tempfile = "3.8"
 criterion = { version = "0.5.1", features = ["html_reports"] }
+pprof = { version = "0.13.0", features = ["flamegraph", "criterion"] }
 
 [[bench]]
 name = "bench_main"
 harness = false
+
+[[bench]]
+name = "bench_flamegraphs"
+harness = false

crates/rbuilder/benches/bench_flamegraphs.rs

@@ -0,0 +1,7 @@
+use criterion::criterion_main;
+
+mod benchmarks;
+
+criterion_main! {
+    benchmarks::mev_boost::serialization_flamegraph,
+}

crates/rbuilder/benches/benchmarks/mev_boost.rs

@@ -1,4 +1,5 @@
 use criterion::{criterion_group, Criterion};
+use pprof::criterion::{Output, PProfProfiler};
 
 use ethereum_consensus::ssz::prelude::serialize;
 use rbuilder::mev_boost::{
@@ -37,4 +38,26 @@ fn bench_mevboost_serialization(c: &mut Criterion) {
     group.finish();
 }
 
-criterion_group!(serialization, bench_mevboost_serialization);
+fn bench_mevboost_serialization_flamegraphs(c: &mut Criterion) {
+    let mut generator = TestDataGenerator::default();
+    c.bench_function("JSON", |b| {
+        b.iter_batched(
+            || generator.create_deneb_submit_block_request(),
+            |b| {
+                serde_json::to_vec(&b).unwrap();
+            },
+            criterion::BatchSize::SmallInput,
+        );
+    });
+}
+
+criterion_group! {
+    name = serialization;
+    config = Criterion::default();
+    targets = bench_mevboost_serialization
+}
+criterion_group!(
+    name=serialization_flamegraph;
+    config = Criterion::default().with_profiler(PProfProfiler::new(100, Output::Flamegraph(None)));
+    targets = bench_mevboost_serialization_flamegraphs
+);