From 0edae7ca021792ad9b934eeb653d212058400fb5 Mon Sep 17 00:00:00 2001
From: "codspeed[bot]" <117304815+codspeed[bot]@users.noreply.github.com>
Date: Tue, 20 Oct 2026 09:22:14 +0900
Subject: [PATCH] Pin the hash seed in the execution benchmark harness (#9235)

Co-authored-by: CodSpeed Bot <no-reply@codspeed.io>
---
 benches/execution.rs | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/benches/execution.rs b/benches/execution.rs
index c0c783f24..0441a006e 100644
--- a/benches/execution.rs
+++ b/benches/execution.rs
@@ -44,6 +44,9 @@ fn bench_rustpython_code(b: &mut Bencher<'_>, name: &str, source: &str) {
     settings.path_list.push("Lib/".to_string());
     settings.write_bytecode = false;
     settings.user_site_directory = false;
+    // Pin the str/bytes hash secret so dict/set probe sequences (and thus
+    // timings) are reproducible across benchmark runs.
+    settings.hash_seed = Some(0);
     let builder = Interpreter::builder(settings);
     let defs = rustpython_stdlib::stdlib_module_defs(&builder.ctx);
     builder.add_native_modules(&defs).build().enter(|vm| {