From 87bb72a47a1fc64b98e498120e332de76e6a9211 Mon Sep 17 00:00:00 2001
From: Dave Parks <davep@lindenlab.com>
Date: Wed, 30 Nov 2022 13:25:00 -0600
Subject: SL-18154 WIP -- CPU sampling (AMD uProf) profile guided optimizations
 to reduce CPU usage of background threads.

---
 indra/llcommon/llthread.cpp | 10 ++++++++++
 1 file changed, 10 insertions(+)

(limited to 'indra/llcommon/llthread.cpp')

diff --git a/indra/llcommon/llthread.cpp b/indra/llcommon/llthread.cpp
index a807acc56e..4eaa05c335 100644
--- a/indra/llcommon/llthread.cpp
+++ b/indra/llcommon/llthread.cpp
@@ -42,6 +42,7 @@
 
 
 #ifdef LL_WINDOWS
+
 const DWORD MS_VC_EXCEPTION=0x406D1388;
 
 #pragma pack(push,8)
@@ -133,6 +134,15 @@ void LLThread::threadRun()
 {
 #ifdef LL_WINDOWS
     set_thread_name(-1, mName.c_str());
+
+#if 0 // probably a bad idea, see usage of SetThreadIdealProcessor in LLWindowWin32)
+    HANDLE hThread = GetCurrentThread();
+    if (hThread)
+    {
+        SetThreadAffinityMask(hThread, (DWORD_PTR) 0xFFFFFFFFFFFFFFFE);
+    }
+#endif
+
 #endif
 
     LL_PROFILER_SET_THREAD_NAME( mName.c_str() );
-- 
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