From c7c81ed95d3d23b37d78aad49dab6beddac200bc Mon Sep 17 00:00:00 2001
From: Eladash <elad3356p@gmail.com>
Date: Mon, 11 Sep 2023 15:03:39 +0300
Subject: [PATCH] PPU: Limit concurrent OVL files processing to 2

---
 rpcs3/Emu/Cell/PPUThread.cpp | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/rpcs3/Emu/Cell/PPUThread.cpp b/rpcs3/Emu/Cell/PPUThread.cpp
index fb54501c45..ee89bb4692 100644
--- a/rpcs3/Emu/Cell/PPUThread.cpp
+++ b/rpcs3/Emu/Cell/PPUThread.cpp
@@ -3802,6 +3802,8 @@ extern void ppu_precompile(std::vector<std::string>& dir_queue, std::vector<ppu_
 
 	lf_queue<file_info> possible_exec_file_paths;
 
+	::semaphore<2> ovl_sema;
+
 	named_thread_group workers("SPRX Worker ", std::min<u32>(utils::get_thread_count(), ::size32(file_queue)), [&]
 	{
 #ifdef __APPLE__
@@ -3868,6 +3870,15 @@ extern void ppu_precompile(std::vector<std::string>& dir_queue, std::vector<ppu_
 			{
 				while (ovl_err == elf_error::ok)
 				{
+					// Try not to process too many files at once because it seems to reduce performance
+					// Concurrently compiling more OVL files does not have much theoretical benefit
+					std::lock_guard lock(ovl_sema);
+
+					if (Emu.IsStopped())
+					{
+						break;
+					}
+
 					const auto [ovlm, error] = ppu_load_overlay(obj, true, path, offset);
 
 					if (error)