On Wed, Oct 28, 2009 at 03:57:48PM +0300, proforg wrote:

> 2009/10/28 Igor Sysoev <is@rambler-co.ru>:
> >
> > Ищем в логе alert'ы вида "1111#0 open socket #3333 left in connection 2222",
> > запускаем gdb на нужную корку:
> >
> > gdb /path/to/nginx /path/to/core.1111
> > qq 2222
> >
>
> 2009/10/27 18:51:55 [alert] 14960#0: open socket #730 left in connection 651
> 2009/10/27 18:51:55 [alert] 14960#0: open socket #148 left in connection 655
> 2009/10/27 18:51:55 [alert] 14960#0: open socket #1062 left in connection 671
> 2009/10/27 18:51:55 [alert] 14960#0: aborting
> 2009/10/27 18:51:56 [notice] 14959#0: signal 17 (SIGCHLD) received
> 2009/10/27 18:51:56 [alert] 14959#0: worker process 14960 exited on
> signal 6 (core dumped)
>
>
> (gdb) qq 655
> $6 = {len = 16, data = 0x74fc004 "/room/095/01.wmv HTTP/1.1\r\nAccept"}
> $7 = {len = 29, data = 0x74fc000 "GET /room/095/01.wmv HTTP/1.1\r\nAccept"}
> discard_body 0
> lingering_close 0
> lingering_time 0
> keepalive 1
> $8 = (ngx_http_event_handler_pt) 0x44636d <ngx_http_test_reading>
> $9 = (ngx_http_event_handler_pt) 0x446254 <ngx_http_request_finalizer>
> $10 = 0x49bfca "sending response to client"
> status 200
> count 1
> blocked 1
> sent 3456999
> length -1
> Cannot access memory at address 0x0
>
> (gdb) qq 651
> $16 = {len = 16, data = 0x6df3004 "/beach/170/3.wmv HTTP/1.1\r\nHost"}
> $17 = {len = 29, data = 0x6df3000 "GET /beach/170/3.wmv HTTP/1.1\r\nHost"}
> discard_body 0
> lingering_close 0
> lingering_time 0
> keepalive 0
> $18 = (ngx_http_event_handler_pt) 0x44636d <ngx_http_test_reading>
> $19 = (ngx_http_event_handler_pt) 0x446254 <ngx_http_request_finalizer>
> $20 = 0x49bfca "sending response to client"
> status 200
> count 1
> blocked 1
> sent 1503060
> length -1
> Cannot access memory at address 0x0

p ngx_cycle->connections[655]->write->handler
p ((ngx_http_request_t *) ngx_cycle->connections[655]->data)->out->buf->file->aio.event

p ngx_cycle->connections[651]->write->handler
p ((ngx_http_request_t *) ngx_cycle->connections[651]->data)->out->buf->file->aio.event


--
Игорь Сысоев
http://sysoev.ru