Hello,

We are running a Joomla website loading a google map in an iframe (under
NGINX) in the main (home) web page. This is the page mostly visited as
it contains almost real-time data to be viewed by clients.

The system info:

Linux myserver.example.com 2.6.32-358.18.1.el6.x86_64 #1 SMP Wed Aug 28
17:19:38 UTC 2013 x86_64
Database Version 5.5.34
Database Collation utf8_general_ci
PHP Version 5.3.3
Web Server nginx/1.4.2
WebServer to PHP Interface fpm-fcgi
Joomla! Version Joomla! 2.5.8 Stable [ Ember ] 8-November-2012 14:00 GMT
Joomla! Platform Version Joomla Platform 11.4.0 Stable [ Brian
Kernighan ] 03-Jan-2012 00:00 GMT

The problem is that there is a repeating error of the form (I have
changed real host name and web root path, as well as client IP address):

2013/11/17 12:39:14 [alert] 20709#0: *9059 pread() read only 38605 of
39107 from "/path/to/web/root/HTML/gmap/gmapv3_auto_el.html" while
sending response to client, client: ::ffff:xxx.xxx.241.42, server:
www.example.com, request: "GET /HTML/gmap/gmapv3_auto_el.html HTTP/1.1",
host: "www.example.com"

I found here:

http://translate.google.com/translate?sl=ru&tl=en&js=n&prev=_t&hl=pt-PT&ie=UTF-8&u=http%3A%2F%2Fforum.nginx.org%2Fread.php%3F21%2C9856&act=url

....that this is probably related to the "open_file_cache" directive, and
in fact I do use (based on advice found on the Internet):

open_file_cache max=5000 inactive=30s;
open_file_cache_valid 30s;
open_file_cache_min_uses 2;
open_file_cache_errors on;

Is there anything I could/should do to optimize system operation to
avoid errors?

Should I disable open_file_cache or not? (I do not entirely understand
its implications.)

How should we determine the directive benefits?

Note: The aim is to be able to serve a few thousand requests per sec at
peak, while normal traffic is < 20 reqs/sec.

I appreciate your suggestions.

Regards,
Nick

_______________________________________________
nginx mailing list
nginx@nginx.org
http://mailman.nginx.org/mailman/listinfo/nginx