Www.mavoix.info out of memory

Outils numeriques Site - Construction et amélioration
#1

C’est peut-être un peu ambitieux de permettre 150 serveurs, chacun occupant minimum 60MB :slight_smile:

$ ubuntu@website:~/Website$ sudo docker-compose exec php-apache bash
$ cat /etc/apache2/mods-enabled/mpm_prefork.conf
# prefork MPM
# StartServers: number of server processes to start
# MinSpareServers: minimum number of server processes which are kept spare
# MaxSpareServers: maximum number of server processes which are kept spare
# MaxRequestWorkers: maximum number of server processes allowed to start
# MaxConnectionsPerChild: maximum number of requests a server process serves

<IfModule mpm_prefork_module>
	StartServers			 5
	MinSpareServers		  5
	MaxSpareServers		 10
	MaxRequestWorkers	  150
	MaxConnectionsPerChild   0
</IfModule>

# vim: syntax=apache ts=4 sw=4 sts=4 sr noet
Site web surchargé par moments
Site web down ?
#2

Je tente de réduire à 15.

$ cat npm_prefork.conf
...
MaxRequestWorkers	  15
...
$ cat docker-compose.yml
...
      - ./mpm_prefork.conf:/etc/apache2/mods-enabled/mpm_prefork.conf
...
#3 
$ top
Tasks: 166 total,   1 running, 165 sleeping,   0 stopped,   0 zombie
%Cpu(s):  0.3 us,  0.7 sy,  0.0 ni, 99.0 id,  0.0 wa,  0.0 hi,  0.0 si,  0.0 st
KiB Mem :  3947984 total,  1167156 free,  1789732 used,   991096 buff/cache
KiB Swap:        0 total,        0 free,        0 used.  1800980 avail Mem 

  PID USER      PR  NI    VIRT    RES    SHR S %CPU %MEM     TIME+ COMMAND                                                    
 4696 999       20   0 1324628 496896  12892 S  0.0 12.6   1:23.82 mysqld                                                     
 5711 www-data  20   0  395512 158512  14080 S  0.0  4.0   4:25.18 apache2                                                    
 5714 www-data  20   0  395300 158300  14084 S  0.0  4.0   5:13.44 apache2                                                    
11412 www-data  20   0  395256 157996  13772 S  0.0  4.0   2:05.82 apache2                                                    
 5171 www-data  20   0  395624 157808  13772 S  0.0  4.0   4:39.52 apache2                                                    
 5167 www-data  20   0  385036 146820  13768 S  0.0  3.7   4:46.39 apache2                                                    
 5715 www-data  20   0  341236 104808  14392 S  0.0  2.7   4:47.88 apache2                                                    
 5170 www-data  20   0  330760  94016  14084 S  0.0  2.4   4:26.45 apache2                                                    
 5168 www-data  20   0  330504  93748  14084 S  0.0  2.4   4:54.54 apache2                                                    
 5169 www-data  20   0  327416  90668  14084 S  0.0  2.3   4:36.84 apache2                                                    
10716 www-data  20   0  327424  90360  13772 S  0.0  2.3   2:57.47 apache2                                                    
 3148 uuidd     20   0  158560  57060   4848 S  0.0  1.4   0:01.06 /usr/sbin/amavi                                            
 3150 uuidd     20   0  160088  56600   4388 S  0.0  1.4   0:00.00 /usr/sbin/amavi                                            
 3151 uuidd     20   0  160088  56600   4388 S  0.0  1.4   0:00.00 /usr/sbin/amavi

Pour l’instant tout va bien.

#4 
Tasks: 171 total,   2 running, 169 sleeping,   0 stopped,   0 zombie
%Cpu(s): 89.7 us, 10.3 sy,  0.0 ni,  0.0 id,  0.0 wa,  0.0 hi,  0.0 si,  0.0 st
KiB Mem :  3947984 total,   406128 free,  1958492 used,  1583364 buff/cache
KiB Swap:        0 total,        0 free,        0 used.  1616040 avail Mem 

  PID USER      PR  NI    VIRT    RES    SHR S %CPU %MEM     TIME+ COMMAND                                                    
 4696 999       20   0 1327228 499400  12596 S  1.8 12.6   4:13.90 mysqld                                                     
 5711 www-data  20   0  396032 159036  14080 S  0.0  4.0  15:01.51 apache2                                                    
11412 www-data  20   0  395856 158688  13772 S  0.0  4.0  12:02.27 apache2                                                    
 5714 www-data  20   0  395300 158416  14144 S  0.0  4.0  15:35.73 apache2                                                    
17626 www-data  20   0  395304 158064  13772 S  0.0  4.0   9:41.95 apache2                                                    
 5167 www-data  20   0  395224 157840  13772 S  0.0  4.0  15:29.77 apache2                                                    
 5168 www-data  20   0  390924 152396  14084 R 97.6  3.9  15:23.52 apache2                                                    
31265 www-data  20   0  376532 139468  13772 S  0.0  3.5   2:40.70 apache2                                                    
17668 www-data  20   0  371972 135052  13896 S  0.0  3.4   9:44.54 apache2                                                    
17628 www-data  20   0  341232 104500  14088 S  0.0  2.6  10:17.78 apache2                                                    
31267 www-data  20   0  328440  91388  13772 S  0.0  2.3   2:39.49 apache2                                                    
 5145 uuidd     20   0  158608  57212   5012 S  0.0  1.4   0:00.10 /usr/sbin/amavi

Pour l’instant tout va bien. Je met un rappel de vérifier que ça continue a aller bien dans une semaine. Je suis assez confiant sur ce coup: c’est pas la première fois que cette limite de 150 serveurs simultanés (!) crée de légers problèmes de mémoire (mais sur d’autres machines). J’aurais du penser a vérifier.

#5 
Tasks: 168 total,   2 running, 166 sleeping,   0 stopped,   0 zombie
%Cpu(s): 63.5 us,  4.7 sy,  0.0 ni, 31.2 id,  0.7 wa,  0.0 hi,  0.0 si,  0.0 st
KiB Mem :  3947984 total,   415136 free,  1965520 used,  1567328 buff/cache
KiB Swap:        0 total,        0 free,        0 used.  1609572 avail Mem 

  PID USER      PR  NI    VIRT    RES    SHR S %CPU %MEM     TIME+ COMMAND                                                    
 4696 999       20   0 1327228 495168   7392 S  1.0 12.5   9:51.27 mysqld                                                     
 5167 www-data  20   0  395992 158268  13304 S  0.0  4.0  44:21.34 apache2                                                    
11412 www-data  20   0  395856 157916  13000 R 22.9  4.0  41:11.04 apache2                                                    
 5711 www-data  20   0  395528 157712  13320 S  0.0  4.0  44:01.03 apache2                                                    
 5714 www-data  20   0  395556 157640  13164 S  0.0  4.0  44:36.82 apache2                                                    
31267 www-data  20   0  395316 157012  13024 S  7.3  4.0  32:25.13 apache2                                                    
 6443 www-data  20   0  384896 145916  13000 S  0.0  3.7  29:17.76 apache2                                                    
31265 www-data  20   0  377308 139796  13304 S  0.0  3.5  31:59.15 apache2                                                    
 6445 www-data  20   0  373996 136212  13036 S 35.9  3.5  28:49.73 apache2                                                    
 2412 www-data  20   0  339592 102436  13680 S  0.0  2.6  13:51.98 apache2                                                    
 2411 www-data  20   0  339328 102176  13688 S  0.0  2.6  13:43.45 apache2                                                    
32000 uuidd     20   0  158608  57060   4868 S  0.0  1.4   0:00.87 /usr/sbin/amavi                                            
32003 uuidd     20   0  160136  56484   4292 S  0.0  1.4   0:00.00 /usr/sbin/amavi

Toujours stable.