Supervisord不会自动启动退出的流程

Question

我有一个PHP脚本，我使用supervisord产生（成功）：

2012-06-29 12:45:15,266 INFO spawned: 'tvm' with pid 4395
2012-06-29 12:45:16,455 INFO success: tvm entered RUNNING state, process has stayed up for > than 1 seconds (startsecs)
2012-06-29 12:45:18,218 INFO exited: tvm (exit status 0; expected)

但是，当脚本退出时，尽管在supervisord.conf中设置了autorestart = true，但它并没有重新生成

[program:tvm]
command=php /var/www/transcodedvideomonitor/index.php ;
autorestart=true ;

我错过了什么？