Merge pull request #1477 from rust-lang/runtime-format-commas

Separate numbers in runtime benchmark results with commas

Author: Kobzol

Cargo.lock

@@ -34,6 +34,8 @@ walkdir = "2"
 flate2 = { version = "1.0.22", features = ["rust_backend"] }
 rayon = "1.5.2"
 cargo_metadata = "0.15.0"
+thousands = "0.2.0"
+
 benchlib = { path = "benchlib" }
 
 [target.'cfg(windows)'.dependencies]

collector/Cargo.toml

@@ -5,6 +5,7 @@ use benchlib::comm::messages::{BenchmarkMessage, BenchmarkResult, BenchmarkStats
 use std::io::{BufRead, BufReader};
 use std::path::{Path, PathBuf};
 use std::process::{Command, Stdio};
+use thousands::Separable;
 
 pub use benchmark::BenchmarkFilter;
 
@@ -118,7 +119,11 @@ fn print_stats(result: &BenchmarkResult) {
             )
             .sqrt();
 
-            println!("{name:>20}: {:>16} (+/- {:>8})", mean as u64, stddev as u64);
+            println!(
+                "{name:>20}: {:>16} (+/- {:>8})",
+                (mean as u64).separate_with_commas(),
+                (stddev as u64).separate_with_commas()
+            );
         } else {
             println!("{name:>20}: Not available");
         }