From bf97fe529648bbf6a7ebf1a3134ed168a83e7156 Mon Sep 17 00:00:00 2001
From: Jussi Saurio <jussi.saurio@gmail.com>
Date: Mon, 24 Nov 2025 21:56:16 +0200
Subject: [PATCH] sim/aws: memory IO 100% of the time, differential 50% of the
 time

- memory IO is faster and is async IO as well, which we aren't testing atm really
- differential testing might also uncover bugs
---
 simulator-docker-runner/docker-entrypoint.simulator.ts | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/simulator-docker-runner/docker-entrypoint.simulator.ts b/simulator-docker-runner/docker-entrypoint.simulator.ts
index c76506d1a3..62dfd734e9 100644
--- a/simulator-docker-runner/docker-entrypoint.simulator.ts
+++ b/simulator-docker-runner/docker-entrypoint.simulator.ts
@@ -176,6 +176,15 @@ while (new Date().getTime() - startTime.getTime() < TIME_LIMIT_MINUTES * 60 * 10
     args.push("--profile", "faultless");
   }
 
+  // Memory IO is faster
+  if (!args.includes("--memory-io")) {
+    args.push("--memory-io");
+  }
+
+  if (Math.random() < 0.5 && !args.includes("--differential")) {
+    args.push("--differential");
+  }
+
   args.push(...["--minimum-tests", "100", "--maximum-tests", "1000"]);
   const loop = args.includes("loop") ? [] : ["loop", "-n", "10", "--short-circuit"]
   args.push(...loop);