我最近在VPS上使用 Ubuntu 12.04 LTS，HHVM，Nginx （包括PageSpeed模块）和 MariaDB 建立了一个WordPress博客。一切都运行得非常快，但在过去的几天里，我注意到HHVM突然停止工作，从那一刻起， error.log 首先显示了这条消息：
2014/09/18 12:27:56 [error] 24442#0: *121276 recv() failed (104: Connection reset by peer) while reading response header from upstream, client: 150.146.136.21, server: xxxxx.com, request: "POST /wp-login.php?PageSpeed=noscript HTTP/1.0", upstream: "fastcgi://127.0.0.1:9000", host: "xxxxx.com"
然后是几条消息，其中的网址与人们正在尝试阅读的文章相对应，但总是出现111错误：
2014/09/18 14:03:28 [error] 24442#0: *133594 connect() failed (111: Connection refused) while connecting to upstream, client: 66.249.78.121, server: xxxxx.com, request: "GET /2008/11/27/thanksgiving-whatever/ HTTP/1.1", upstream: "fastcgi://127.0.0.1:9000", host: "www.xxxx.com"
我说它与PageSpeed模块有关，但为什么HHVM受影响而不是Nginx？你有一些提示吗？
感谢