From eb5096bfc7945cb30abb35ae2e1320e687966f89 Mon Sep 17 00:00:00 2001
From: Paul Davis <paul@linuxaudiosystems.com>
Date: Wed, 8 May 2013 10:47:23 -0400
Subject: use hw.physicalcpu to get a more accurate CPU count on OS X (hw.ncpu
 includes hyperthreading cpus)

---
 libs/pbd/cpus.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'libs')

diff --git a/libs/pbd/cpus.cc b/libs/pbd/cpus.cc
index 77b95a455d..48b919cd96 100644
--- a/libs/pbd/cpus.cc
+++ b/libs/pbd/cpus.cc
@@ -40,7 +40,7 @@ hardware_concurrency()
 #elif defined(__APPLE__) || defined(__FreeBSD__)
         int count;
         size_t size=sizeof(count);
-        return sysctlbyname("hw.ncpu",&count,&size,NULL,0)?0:count;
+        return sysctlbyname("hw.physicalcpu",&count,&size,NULL,0)?0:count;
 #elif defined(HAVE_UNISTD) && defined(_SC_NPROCESSORS_ONLN)
         int const count=sysconf(_SC_NPROCESSORS_ONLN);
         return (count>0)?count:0;
-- 
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