From 0870d346e16150606ada579bd857681a2b111c63 Mon Sep 17 00:00:00 2001
From: Pratik Mankawde <3397372+pratikmankawde@users.noreply.github.com>
Date: Thu, 19 Feb 2026 17:59:43 +0000
Subject: [PATCH] reduce stack size and remove multi-threaded test execution

Signed-off-by: Pratik Mankawde <3397372+pratikmankawde@users.noreply.github.com>
---
 .github/workflows/reusable-build-test-config.yml | 2 +-
 include/xrpl/beast/test/yield_to.h               | 4 ++--
 include/xrpl/core/Coro.ipp                       | 4 ++--
 3 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/.github/workflows/reusable-build-test-config.yml b/.github/workflows/reusable-build-test-config.yml
index 39840fc082..6a2344589c 100644
--- a/.github/workflows/reusable-build-test-config.yml
+++ b/.github/workflows/reusable-build-test-config.yml
@@ -229,7 +229,7 @@ jobs:
         env:
           BUILD_NPROC: ${{ steps.nproc.outputs.nproc }}
         run: |
-          ./xrpld --unittest --unittest-jobs "${BUILD_NPROC}"
+          ./xrpld --unittest --unittest-jobs 1
 
       - name: Debug failure (Linux)
         if: ${{ failure() && runner.os == 'Linux' && !inputs.build_only }}
diff --git a/include/xrpl/beast/test/yield_to.h b/include/xrpl/beast/test/yield_to.h
index b6c5bca3e3..52d9fb8ae0 100644
--- a/include/xrpl/beast/test/yield_to.h
+++ b/include/xrpl/beast/test/yield_to.h
@@ -22,10 +22,10 @@ namespace test {
 // Sanitizers significantly increase stack frame sizes
 // (TSAN ~3-5x, ASAN ~2-3x), requiring larger coroutine stacks.
 #if defined(__SANITIZE_THREAD__) || defined(__SANITIZE_ADDRESS__)
-inline constexpr std::size_t yieldStackSize = 8 * 1024 * 1024;
+inline constexpr std::size_t yieldStackSize = 4 * 1024 * 1024;
 #elif defined(__has_feature)
 #if __has_feature(thread_sanitizer) || __has_feature(address_sanitizer)
-inline constexpr std::size_t yieldStackSize = 8 * 1024 * 1024;
+inline constexpr std::size_t yieldStackSize = 4 * 1024 * 1024;
 #else
 inline constexpr std::size_t yieldStackSize = 2 * 1024 * 1024;
 #endif
diff --git a/include/xrpl/core/Coro.ipp b/include/xrpl/core/Coro.ipp
index 6f472251cc..f85d9d2123 100644
--- a/include/xrpl/core/Coro.ipp
+++ b/include/xrpl/core/Coro.ipp
@@ -9,10 +9,10 @@ namespace xrpl {
 // Sanitizers significantly increase stack frame sizes
 // (TSAN ~3-5x, ASAN ~2-3x), requiring larger coroutine stacks.
 #if defined(__SANITIZE_THREAD__) || defined(__SANITIZE_ADDRESS__)
-inline constexpr std::size_t coroStackSize = megabytes(8);
+inline constexpr std::size_t coroStackSize = megabytes(4);
 #elif defined(__has_feature)
 #if __has_feature(thread_sanitizer) || __has_feature(address_sanitizer)
-inline constexpr std::size_t coroStackSize = megabytes(8);
+inline constexpr std::size_t coroStackSize = megabytes(4);
 #else
 inline constexpr std::size_t coroStackSize = megabytes(1);
 #endif