From a9ae19d01a75612fb453d95ea6442200d7f22875 Mon Sep 17 00:00:00 2001
From: not-matthias <matthias@codspeed.io>
Date: Tue, 3 Nov 2026 10:26:30 +0100
Subject: [PATCH] feat(valgrind): always enable deterministic RNG

Enable deterministic randomness for every simulation run to reduce benchmark variance. Remove the experimental opt-in flag and expose the deterministic RNG capability in the runtime environment.
---
 src/executor/valgrind/measure.rs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/executor/valgrind/measure.rs b/src/executor/valgrind/measure.rs
index fca89e776..a5b378213 100644
--- a/src/executor/valgrind/measure.rs
+++ b/src/executor/valgrind/measure.rs
@@ -27,6 +27,7 @@ fn get_valgrind_args(tool: &SimulationTool, config: &ExecutorConfig) -> Vec<Stri
         "--I1=32768,8,64",
         "--D1=32768,8,64",
         "--LL=8388608,16,64",
+        "--deterministic-rng=yes",
         "--collect-systime=nsec",
         "--read-inline-info=yes",
     ]