From aed1f6d807915dd41cbe409f051480bde798d093 Mon Sep 17 00:00:00 2001
From: Peter Steinberger <steipete@gmail.com>
Date: Fri, 20 Mar 2026 21:07:56 +0000
Subject: [PATCH] test: parallelize low-profile deferred lanes

---
 scripts/test-parallel.mjs | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/scripts/test-parallel.mjs b/scripts/test-parallel.mjs
index 6100e99f42f..10ca1f5e0f4 100644
--- a/scripts/test-parallel.mjs
+++ b/scripts/test-parallel.mjs
@@ -1300,9 +1300,16 @@ if (serialPrefixRuns.length > 0) {
   if (failedSerialPrefix !== undefined) {
     process.exit(failedSerialPrefix);
   }
+  const deferredRunConcurrency = isMacMiniProfile ? 3 : testProfile === "low" ? 2 : undefined;
   const failedDeferredParallel = isMacMiniProfile
-    ? await runEntriesWithLimit(deferredParallelRuns, passthroughOptionArgs, 3)
-    : await runEntries(deferredParallelRuns, passthroughOptionArgs);
+    ? await runEntriesWithLimit(deferredParallelRuns, passthroughOptionArgs, deferredRunConcurrency)
+    : deferredRunConcurrency
+      ? await runEntriesWithLimit(
+          deferredParallelRuns,
+          passthroughOptionArgs,
+          deferredRunConcurrency,
+        )
+      : await runEntries(deferredParallelRuns, passthroughOptionArgs);
   if (failedDeferredParallel !== undefined) {
     process.exit(failedDeferredParallel);
   }