From 87f655e926b073290cdcc5260e33ed9f97a2f109 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jo=C3=A3o=20Magalh=C3=A3es?= <joamag@gmail.com>
Date: Sun, 4 Jun 2023 23:17:19 +0100
Subject: [PATCH] fix: performance fix for benchmark
---
frontends/sdl/src/main.rs | 28 +++++++++++++++++++++++++++-
1 file changed, 27 insertions(+), 1 deletion(-)
diff --git a/frontends/sdl/src/main.rs b/frontends/sdl/src/main.rs
index 58eb1b60..ccba9557 100644
--- a/frontends/sdl/src/main.rs
+++ b/frontends/sdl/src/main.rs
@@ -491,6 +491,32 @@ impl Emulator {
}
}
+ pub fn run_benchmark(&mut self, params: Benchmark) {
+ let count = params.count;
+ let chunk_size = params.chunk_size.unwrap_or(1);
+ let mut cycles = 0u64;
+
+ let initial = SystemTime::now();
+
+ if chunk_size > 1 {
+ for _ in 0..(count / chunk_size) {
+ cycles += self.system.clock_m(chunk_size) as u64;
+ }
+ } else {
+ for _ in 0..count {
+ cycles += self.system.clock() as u64;
+ }
+ }
+
+ let delta = initial.elapsed().unwrap().as_millis() as f64 / 1000.0;
+ let frequency_mhz = cycles as f64 / delta / 1000.0 / 1000.0;
+
+ println!(
+ "Took {:.2} seconds to run {} ticks ({} cycles) ({:.2} Mhz)!",
+ delta, count, cycles, frequency_mhz
+ );
+ }
+
pub fn run_headless(&mut self, allowed_cycles: Option<u64>) {
let allowed_cycles = allowed_cycles.unwrap_or(u64::MAX);
@@ -685,7 +711,7 @@ fn main() {
// not and runs it accordingly, note that if running in headless
// mode the number of cycles to be run may be specified
if args.benchmark {
- emulator.benchmark(Benchmark::new(500000000, None));
+ emulator.run_benchmark(Benchmark::new(500000000, None));
} else if args.headless {
emulator.run_headless(if args.cycles > 0 {
Some(args.cycles)
--
GitLab