Add profiling tools, examples

eth2/utils/ssz/benches/benches.rs

@@ -0,0 +1,38 @@
+#[macro_use]
+extern crate criterion;
+
+use criterion::black_box;
+use criterion::{Benchmark, Criterion};
+use ssz::{Decodable, Encodable};
+
+fn criterion_benchmark(c: &mut Criterion) {
+    let n = 8196;
+
+    let vec: Vec<u64> = vec![4242; 8196];
+    c.bench(
+        &format!("vec_of_{}_u64", n),
+        Benchmark::new("as_ssz_bytes", move |b| {
+            b.iter_with_setup(|| vec.clone(), |vec| black_box(vec.as_ssz_bytes()))
+        })
+        .sample_size(100),
+    );
+
+    let vec: Vec<u64> = vec![4242; 8196];
+    let bytes = vec.as_ssz_bytes();
+    c.bench(
+        &format!("vec_of_{}_u64", n),
+        Benchmark::new("from_ssz_bytes", move |b| {
+            b.iter_with_setup(
+                || bytes.clone(),
+                |bytes| {
+                    let vec: Vec<u64> = Vec::from_ssz_bytes(&bytes).unwrap();
+                    black_box(vec)
+                },
+            )
+        })
+        .sample_size(100),
+    );
+}
+
+criterion_group!(benches, criterion_benchmark);
+criterion_main!(benches);