diff --git a/src/os/unix/pa_unix_util.c b/src/os/unix/pa_unix_util.c
index 459b2be..f234c64 100644
--- a/src/os/unix/pa_unix_util.c
+++ b/src/os/unix/pa_unix_util.c
@@ -160,7 +160,11 @@ PaTime PaUtil_GetTime( void )
     return mach_absolute_time() * machSecondsConversionScaler_;
 #elif defined(HAVE_CLOCK_GETTIME)
     struct timespec tp;
+#if defined(CLOCK_MONOTONIC)
+    clock_gettime(CLOCK_MONOTONIC, &tp);
+#else
     clock_gettime(CLOCK_REALTIME, &tp);
+#endif
     return (PaTime)(tp.tv_sec + tp.tv_nsec * 1e-9);
 #else
     struct timeval tv;
@@ -270,11 +274,16 @@ PaError PaUnixThread_New( PaUnixThread* self, void* (*threadFunc)( void* ), void
 {
     PaError result = paNoError;
     pthread_attr_t attr;
+    pthread_condattr_t cattr;
     int started = 0;
 
     memset( self, 0, sizeof (PaUnixThread) );
     PaUnixMutex_Initialize( &self->mtx );
-    PA_ASSERT_CALL( pthread_cond_init( &self->cond, NULL ), 0 );
+    PA_ASSERT_CALL( pthread_condattr_init( &cattr ), 0 );
+#if defined(CLOCK_MONOTONIC) && !defined(__APPLE__)
+    PA_ASSERT_CALL( pthread_condattr_setclock( &cattr, CLOCK_MONOTONIC ), 0 );
+#endif
+    PA_ASSERT_CALL( pthread_cond_init( &self->cond, &cattr), 0 );
 
     self->parentWaiting = 0 != waitForChild;