--- qsampler/trunk/src/qsampler.cpp	2010/10/06 18:49:54	2144
+++ qsampler/trunk/src/qsampler.cpp	2011/06/05 10:21:53	2181
@@ -270,7 +270,8 @@
 	signal(signo, SIG_DFL);
 
 	static const char *shell  = "/bin/sh";
-	static const char *format = "gdb -q --batch --pid=%d --eval-command=bt";
+	static const char *format = "gdb -q --batch --pid=%d"
+		" --eval-command='thread apply all bt'";
 
 	snprintf(cmd, sizeof(cmd), format, (int) getpid());