Warning: require_once(/xxxxx/wp-includes/cache.php) [function.require-once]: failed to open stream: Too many open files in /xxxxx/wp-includes/load.php on line 466
Fatal error: require_once() [function.require]: Failed opening required '/xxxxx/wp-includes/cache.php' (include_path='.:') in /xxxxxx/wp-includes/load.php on line 466
466行的代码是 if ( ! wp_using_ext_object_cache() )
require_once ( ABSPATH . WPINC . '/cache.php' );
是不是插件冲突啊？

删了 wp super cache 再重启web 服务，暂时没出现报错。唉。。