[alert] 4418#0: *99024 pread() read only 0 of 32768 from

Hi,

I have a problem today with one of my servers that are handing a live streaming app.

The error log look like this :

2016/10/16 16:50:38 [alert] 4418#0: *98869 pread() read only 0 of 32768 from "/mnt/ID/720/7200.ts" while sending response to client, client: xxx.xxx.xxx.xxx, server: nginx04, request: "GET /ID/720/7200.ts HTTP/1.1", host: "nginx04", referrer: "https://xxxxx.xx"

I found that some people say that i have to disable open_file_cache, but if i read the manual of nginx this option is disable default.
But in my nginx.conf i dont have the line at all, so are the open_file_cache enable if there is just nothing in my nginx.conf file that are contains open_file_cache?

I using a own compile version of nginx version :
nginx/1.8.1

Kind regards