profile mode (#5617)

substrate/bin/node/bench/src/main.rs

@@ -17,7 +17,7 @@
 #[macro_use] mod core;
 mod import;
 
-use crate::core::run_benchmark;
+use crate::core::{run_benchmark, Mode as BenchmarkMode};
 use import::{ImportBenchmarkDescription, SizeType};
 use node_testing::bench::{Profile, KeyTypes};
 use structopt::StructOpt;
@@ -41,6 +41,15 @@ struct Opt {
 	///
 	/// Run with `--list` for the hint of what to filter.
 	filter: Option<String>,
+
+	/// Mode
+	///
+	/// "regular" for regular becnhmark
+	///
+	/// "profile" mode adds pauses between measurable runs,
+	/// so that actual interval can be selected in the profiler of choice.
+	#[structopt(short, long, default_value = "regular")]
+	mode: BenchmarkMode,
 }
 
 fn main() {
@@ -81,7 +90,7 @@ fn main() {
 	for benchmark in benchmarks {
 		if opt.filter.as_ref().map(|f| benchmark.path().has(f)).unwrap_or(true) {
 			log::info!("Starting {}", benchmark.name());
-			let result = run_benchmark(benchmark);
+			let result = run_benchmark(benchmark, opt.mode);
 			log::info!("{}", result);
 
 			results.push(result);