- content {toc}
部署到服务器上Web应用－微信遥控器，在运行一段时间，访问出现如下情况：
504 Gateway Time-out
nginx/1.2.9
StackOverFlow上的找到的解答是, 重新设置ulimit ,查看本机：
[root@AY1404272234249537e7Z logs]# ulimit -n
1024
[root@AY1404272234249537e7Z logs]# ulimit -a
core file size (blocks, -c) 0
data seg size (kbytes, -d) unlimited
scheduling priority (-e) 0
file size (blocks, -f) unlimited
pending signals (-i) 14875
max locked memory (kbytes, -l) 64
max memory size (kbytes, -m) unlimited
open files (-n) 1024
pipe size (512 bytes, -p) 8
POSIX message queues (bytes, -q) 819200
real-time priority (-r) 0
stack size (kbytes, -s) 10240
cpu time (seconds, -t) unlimited
max user processes (-u) 14875
virtual memory (kbytes, -v) unlimited
file locks (-x) unlimited
不过有人设置的非常大的进程打开文件上限，还是会出现问题。
Tornado的网页连接过多：
Tornado “error: [Errno 24] Too many open files” error
解决是在HTTPServer实例化时添加关键字参数no_keep_alive=True。
class Application(tornado.web.Application):
def __init__(self):
...
http_server = tornado.httpserver.HTTPServer(Application(),no_keep_alive=True)
http_server.listen(port)
tornado.ioloop.IOLoop.instance().start()