writev() failed (104: Connection reset by peer)

[Zsu Frog]

every time, when I login in my site  ,they happened. I just can get a
error blank page.


---LOGS------------------------------------------------------------------------

2009/02/06 11:19:51 [info] 32745#0: *1 client 202.116.94.64 closed
keepalive connection (104: Connection reset by peer)
2009/02/06 11:20:01 [info] 32745#0: *3 client 202.116.94.64 closed
keepalive connection (104: Connection reset by peer)
2009/02/06 11:21:09 [info] 32745#0: *6 client 202.116.94.64 closed
keepalive connection (104: Connection reset by peer)
2009/02/06 11:23:03 [notice] 368#0: using the "epoll" event method
2009/02/06 11:23:03 [warn] 368#0: 2048 worker_connections are more than
open file resource limit: 1024
2009/02/06 11:23:03 [notice] 368#0: nginx/0.6.34
2009/02/06 11:23:03 [notice] 368#0: built by gcc 4.3.2 (Ubuntu
4.3.2-1ubuntu11)
2009/02/06 11:23:03 [notice] 368#0: OS: Linux 2.6.27-7-server
2009/02/06 11:23:03 [notice] 368#0: getrlimit(RLIMIT_NOFILE): 1024:1024
2009/02/06 11:23:03 [notice] 369#0: start worker processes
2009/02/06 11:23:03 [notice] 369#0: start worker process 370
2009/02/06 11:23:11 [info] 370#0: *1 client 202.116.94.64 closed
keepalive connection (104: Connection reset by peer)
2009/02/06 11:23:11 [info] 370#0: *4 client 202.116.94.64 closed
keepalive connection (104: Connection reset by peer)
2009/02/06 11:24:06 [info] 370#0: *9 client 202.116.94.64 closed
keepalive connection (104: Connection reset by peer)
2009/02/06 11:24:06 [info] 370#0: *11 writev() failed (104: Connection
reset by peer) while sending to client, client: 202.116.94.64, server:
202.116.94.254, request: "GET /zsuxg/image/skin/0/main_13.gif HTTP/1.1",
upstream: "http://202.116.64.11:9080/zsuxg/image/skin/0/main_13.gif",
host: "202.116.94.254", referrer: "http://202.116.94.254/zsuxg/"
2009/02/06 11:26:01 [info] 370#0: *15 client 202.116.94.64 closed
keepalive connection
2009/02/06 11:26:01 [info] 370#0: *17 client 202.116.94.64 closed
keepalive connection (104: Connection reset by peer)
2009/02/06 11:26:01 [info] 370#0: *19 writev() failed (104: Connection
reset by peer) while sending to client, client: 202.116.94.64, server:
202.116.94.254, request: "GET /zsuxg/image/skin/0/page_bg.gif HTTP/1.1",
upstream: "http://202.116.64.11:9080/zsuxg/image/skin/0/page_bg.gif",
host: "202.116.94.254", referrer: "http://202.116.94.254/zsuxg/"
2009/02/06 15:00:04 [notice] 3035#0: using the "epoll" event method
2009/02/06 15:00:04 [warn] 3035#0: 2048 worker_connections are more than
open file resource limit: 1024
2009/02/06 15:00:04 [notice] 3035#0: nginx/0.6.34
2009/02/06 15:00:04 [notice] 3035#0: built by gcc 4.3.2 (Ubuntu
4.3.2-1ubuntu11)
2009/02/06 15:00:04 [notice] 3035#0: OS: Linux 2.6.27-7-server
2009/02/06 15:00:04 [notice] 3035#0: getrlimit(RLIMIT_NOFILE): 1024:1024
2009/02/06 15:00:04 [notice] 3036#0: start worker processes
2009/02/06 15:00:04 [notice] 3036#0: start worker process 3037
2009/02/06 15:00:12 [info] 3037#0: *3 writev() failed (104: Connection
reset by peer) while sending to client, client: 202.116.94.64, server:
202.116.94.254, request: "GET /zsuxg/image/skin/0/page_bg.gif HTTP/1.1",
upstream: "http://202.116.64.11:9080/zsuxg/image/skin/0/page_bg.gif",
host: "202.116.94.254", referrer: "http://202.116.94.254/zsuxg/"
2009/02/06 15:01:00 [info] 3037#0: *8 client 202.116.94.64 closed
keepalive connection (104: Connection reset by peer)
~
----------------------------------------------------------------------------

my nginx.conf setting:

#user  nobody;
worker_processes  1;

#error_log  logs/error.log;
#error_log  logs/error.log  notice;
#error_log  logs/error.log  info;
error_log  logs/error.log  debug;


#pid        logs/nginx.pid;


events {
    worker_connections  2048;
}


http {
    include       mime.types;
    default_type  application/octet-stream;

    log_format up_head '$remote_addr - $remote_user [$time_local]
$request '
                       'upstream_http_content_type
$upstream_http_content_type';


    log_format  main  '$remote_addr - $remote_user [$time_local]
$request '
    #                  '"$status" $body_bytes_sent "$http_referer" '
    #                  '"$http_user_agent" "$http_x_forwarded_for"';

    access_log  logs/access.log  debug;

    sendfile        on;
    #tcp_nopush     on;

    #keepalive_timeout  0;

    #gzip  on;


    upstream mysvr {
                server 202.116.64.11:9080;
                server 202.116.64.11:9080;
                hash   $request_uri;
        }

    server {
        listen       80;
        server_name  202.116.94.254;

        keepalive_timeout  10000;
    proxy_connect_timeout 2400;
    proxy_read_timeout 2400;
    proxy_send_timeout 2400;
    client_max_body_size 10m;
    proxy_ignore_client_abort  on;


        client_header_buffer_size 4000k;

        #charset koi8-r;

        #access_log  logs/host.access.log  main;

        location / {
            root   html;
            index  index.html index.htm;
        }

        location /zsuxg/ {
            proxy_pass   http://mysvr/zsuxg/;
            proxy_redirect default;
            proxy_set_header Host $host;
            proxy_set_header X-Real-IP $remote_addr;
            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        }


        }




}

why writev() failed (104: Connection reset by peer) while sending to
client ??
~
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