# more nginx/error.log
2010/08/18 14:42:19 [error] 18256#0: *264534 readv() failed (104:
Connection reset by peer) while reading upstream, client:
6.217.2
36.22, server: wo.china.com, request: "GET /list/index/rcreated/
HTTP/1.0", upstream: "fastcgi://127.0.0.1:10080", host:
"www.hichi
na.com"
2010/08/18 14:46:55 [error] 18254#0: *272781 upstream prematurely
closed connection while reading response header from upstream,
cli
ent: 6.217.236.22, server: wo.china.com, request: "GET /top/
HTTP/1.0", upstream: "fastcgi://127.0.0.1:10080", host:
"www.hichina.
com"
2010/08/18 14:46:55 [error] 18254#0: *272781 open()
"/var/www/nginx-default/50x.html" failed (2: No such file or
directory), client:
6.217.236.22, server: wo.china.com, request: "GET /top/
HTTP/1.0", upstream: "fastcgi://127.0.0.1:10080", host:
"www.hichina.com"
# more kern.log
Aug 18 14:42:18 w23 kernel: [2524799.982979] php-cgi[30124]:
segfault at 45 ip 082da5bf sp bfd89c50 error 4 in
php5-cgi[8048000+4c
c000]
呈现这种问题的原因：# ab -c 1000 -n 10000
http://www.hichina.com/list/index/rcreated/
在用ab测试之前：
[email protected]:/var/log# netstat -anp
Active Internet connections (servers and established)
Proto Recv-Q Send-Q Local
Address
Foreign Address
State PID/Program name
tcp
0 0
127.0.0.1:10080
0.0.0.0:*
LISTEN
4145/php-cgi
在用ab测试之后：
[email protected]:/var/log# netstat -anp|more
Active Internet connections (servers and established)
Proto Recv-Q Send-Q Local
Address
Foreign Address
State PID/Program name
tcp
0 0
127.0.0.1:10080
0.0.0.0:*
LISTEN
4145/php-cgi
说明：在用ab测试后cgi的pid沟通，深圳论坛空间
香港主机，说明不是网上说的“由于php-cgi重启可能cgi历程死掉造成的”
$ ps aux|grep php-cgi|wc
514 5655 42144
# 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) 16382
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) 8192
cpu
time
(seconds, -t) unlimited
max user
processes
(-u) unlimited
virtual
memory
(kbytes, -v) unlimited
file
locks
(-x) unlimited
ab压力测试,问题及原因：
# ab -c 515 -n 1000 http://192.168.206.121/
2010/08/26 10:35:03 [alert] 13342#0: *8353 socket() failed (24: Too
many open files) while connecting to upstream, client:
192.168.206.120,
server: localhost, request: "GET / HTTP/1.0", upstream: "fastcgi://127.0.0.1:10080", host: "192.168.206.121"（高出了cgi历程的个数）
2010/08/26 10:53:16 [alert] 15016#0: *4644 1024 worker_connections are not enough while connecting to upstream, client: 192.168.206.120, server:
localhost, request: "GET / HTTP/1.0", upstream: "fastcgi://127.0.0.1:10080", host: "192.168.206.121"（增加worker_connections的数量）
2010/08/26 17:26:21 [error] 12936#0: *685388 connect() failed (111: Connection refused) while connecting to upstream, client: 192.168.206.121,
server: localhost, request: "GET /info.php HTTP/1.0", upstream: "fastcgi://127.0.0.1:10080", host: "192.168.206.121"
