php-cgi apache high load

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rndinit0

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Jan 15, 2005
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PHP: 
top - 12:51:47 up 14:31,  2 users,  load average: 1.64, 2.24, 1.40                                                                  
Tasks: 332 total,   7 running, 325 sleeping,   0 stopped,   0 zombie                                                                
Cpu(s):  22.4% user,   2.6% system,   0.0% nice,  75.0% idle                                                                        
Mem:    905392k total,   726548k used,   178844k free,    18724k buffers                                                            
Swap:  1951888k total,  1951888k used,        0k free,   101000k cached                                                             
                                                                                                                                    
  PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND                                                                
20640 chicintu  17   0 14784  14m 4624 R  7.2  1.6   0:00.22 php-cgi                  17082 root      12   0  1264 1264  852 R  1.3  0.1   0:10.59 top                      
17371 apache     9   0  6244 6244 5608 S  0.3  0.7   0:00.05 httpd                    17618 mysql      9   0 24416  23m 1528 S  0.3  2.7   0:00.01 mysqld

I've recently switched to Apache 2.0 Php5 suPHP .60 mysql 5

The problem is apache keeps crashing, if this happens, bind, exim, dovecot usually crash as well.

top shows that highest loads are apache 28% cpu and users php scripts taking up anywhere from .3% -> 8% cpu.

How can I control/resolve this?

The server has become extremely unstable.

Debian 2.4.27-2-386 #1 Wed Aug 17 09:33:35 UTC 2005 i686 GNU/Linux
 
update:

PHP: 
top - 13:39:27 up 15:19,  2 users,  load average: 1.74, 1.58, 1.20
Tasks: 309 total,   5 running, 304 sleeping,   0 stopped,   0 zombie
Cpu(s):   0.3% user,   1.3% system,   0.0% nice,  98.4% idle
Mem:    905392k total,   572628k used,   332764k free,    31892k buffers
Swap:  1951888k total,  1951884k used,        4k free,   149392k cached

  PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND                  
24825 root      15   0  1248 1248  848 R  1.3  0.1   0:19.74 top                      
24148 bind      11   0  8148 8148 1744 S  0.3  0.9   0:31.09 named                    
    1 root       8   0   536  480  456 S  0.0  0.1   0:05.83 init

I would assume having only 4k of swap free is really really bad.

free -m

PHP: 
               total       used       free     shared    buffers     cached
Mem:           884        562        321          0         32        146
-/+ buffers/cache:        383        500
Swap:         1906       1904          1
 
Last edited:
My first guess is, suPHP is the thing sucking up so much memory.
Your system has no memory left, so everything crashes ...
 
Driesp said:
My first guess is, suPHP is the thing sucking up so much memory.
Your system has no memory left, so everything crashes ...
Click to expand...
Thats what I was thinking, isnt there a way to control how much memory suphp uses. Or at least optimize it? I cant be the only one using suphp
 
I must admit, running PHP as CGI is a bit of a resource hog, i've reverted all my servers back to CLI.
You could try a memory upgrade aswell, atleast double what you have.
 
iceuk626 said:
I must admit, running PHP as CGI is a bit of a resource hog, i've reverted all my servers back to CLI.
You could try a memory upgrade aswell, atleast double what you have.
Click to expand...

Whats the average usage of suPHP per virtual entry in httpd?
 
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