diff --git a/winsup/cygwin/ChangeLog b/winsup/cygwin/ChangeLog
index 4bffe2169..c6851787e 100644
--- a/winsup/cygwin/ChangeLog
+++ b/winsup/cygwin/ChangeLog
@@ -1,3 +1,9 @@
+2002-11-04  Christopher Faylor  <cgf@redhat.com>
+
+	* pinfo.cc (_pinfo::commune_send): Set priority low when sleeping,
+	waiting for commune completion so that we don't spin waiting for lower
+	priority processes.
+
 2002-11-04  Christopher Faylor  <cgf@redhat.com>
 
 	* sigproc.cc (WAIT_SIG_PRIORITY): Bump to THREAD_PRIORITY_TIME_CRITICAL.
diff --git a/winsup/cygwin/pinfo.cc b/winsup/cygwin/pinfo.cc
index 0f9510fda..f47e3bd2d 100644
--- a/winsup/cygwin/pinfo.cc
+++ b/winsup/cygwin/pinfo.cc
@@ -362,12 +362,17 @@ _pinfo::commune_send (DWORD code)
   if (sig_send (this, __SIGCOMMUNE))
     goto err;
 
+  /* FIXME: Need something better than an busy loop here */
   bool isalive;
   while ((isalive = alive ()))
     if (myself->hello_pid <= 0)
       break;
     else
-      Sleep (0);
+      {
+	DWORD prio = SetThreadPriority (GetCurrentThread (), THREAD_PRIORITY_IDLE);
+	Sleep (0);
+	SetThreadPriority (GetCurrentThread (), prio);
+      }
 
   CloseHandle (tome);
   tome = NULL;