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mindicador.cl

Optmización de procesos Apache (PreFork)

Mejore el desempeño y/o utilización de recursos de su servicio Web

Introducción

Generalmente la configuración de los procesos utilizados por nuestro servidor httpd Apache se pasa por alto hasta encontrarnos con algún problema, el cual luego de muchas vueltas nos damos cuenta que debemos hacer ajustes en la cantidad de procesos utilizados por Apache.

Para CentOS, Apache viene pre-configurado para arrancar en la modalidad PreFork con 8 procesos, con capacidad para crecer hasta 256, lo que Apache administra según la carga que tenga. Cada uno de dichos proceso se encarga de atender una conexión, por ejemplo atendiendo un PHP, descargando una imagen, una hoja de estilo css o un archivo javascript.

Probablemente dicha configuración puede ser adecuada para muchas implementaciones, pero en ocaciones puede convertirse en un cuello de botella y afectar el rendimiento, ya sea por que no aprovecha los recursos del servidor dado el límite de 256 procesos o por que se crean demaciados procesos que consumen la RAM disponible

Configuración

La configuración de los procesos viene dada en el archivo /etc/httpd/httpd.conf como: 

...
# 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
# ServerLimit: maximum value for MaxClients for the lifetime of the server
# MaxClients: maximum number of server processes allowed to start
# MaxRequestsPerChild: maximum number of requests a server process serves
<IfModule prefork.c>
StartServers       8
MinSpareServers    5
MaxSpareServers   20
ServerLimit      256
MaxClients       256
MaxRequestsPerChild  4000
</IfModule>
...
StartServers
Indica el número de procesos que genera Apache al momento de iniciarse
MinSpareServers
Cantidad mínima de procesos a la espera de atender solicitudes
MaxSpareServers
Cantidad máxima de procesos a la espera de atender solicitudes
ServerLimit
Límite de procesos permitidos a generar
MaxClients
Límite de clientes a ser atentidos simultáneamente, debe ser igual a ServerLimit
MaxRequestsPerChild
Cantidad máxima de requerimientos a atender por procesos, al cumplir dicha cuota, el proceso se reinicia, lo que ayuda a liberar recursos de RAM que puede tener cautivos

Caso de servidor pequeño, bajas transacciones

Si consideramos un escenario de un servidor pequeño, por ejemplo de 512 MB de RAM y bajos niveles de carga (no sería prudente tener altos niveles en un sevidor de baja RAM), tomando en cuenta que cada proceso Apache toma en promedio uno 25 MB, será conveniente reducir la cantidad de procesos de manera que al subir la carga, las solicitudes eperen sin saturar nuestro servidor (Lentitud es mejor que caida) 

...
# 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
# ServerLimit: maximum value for MaxClients for the lifetime of the server
# MaxClients: maximum number of server processes allowed to start
# MaxRequestsPerChild: maximum number of requests a server process serves
<IfModule prefork.c>
StartServers       8
MinSpareServers    4
MaxSpareServers    4
ServerLimit       60
MaxClients        60
MaxRequestsPerChild  1000
</IfModule>
...

Reducimos la cantidad máxima de procesos y la de procesos Spare, que son los que están a la espera de la subida de carga. Se reduce la cantidad MaxRequestsPerChild de manera de poder liberar más rápidamente la memoria que puede dejar cautiva alguno de los requerimientos, sobre todo si se utiliza PHP.

Caso de servidor mayor, altas transacciones

En caso de un servidor con mayor número de transacciones, entre los que podemos ver servicios como:

...
# 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
# ServerLimit: maximum value for MaxClients for the lifetime of the server
# MaxClients: maximum number of server processes allowed to start
# MaxRequestsPerChild: maximum number of requests a server process serves
<IfModule prefork.c>
StartServers     256
MinSpareServers   32
MaxSpareServers   64
ServerLimit     2048
MaxClients      2048
MaxRequestsPerChild  4000
</IfModule>
...
StartServers
Se eleva al valor promedio de procesos utilizados, de menera que al reiniciar el servicio, pueda atender rápidamente los requerimientos entrantes
MinSpareServers
Se debe considerar el crecimiento de carga, en el caso de tener un crecimiento violento en ciertos horarios, hay que considera tener valores altos como 32 o más.
MaxSpareServers
Igual al caso anterior, considerando que tan rápido nos interesa liberar la RAM, En éste caso debemos configurar para mantener el servicio Web, por lo que es conveniente dejar algo elevado. Si el número es muy próximo al mínimo, estaremos generando y bajando procesos con alta frecuencia, lo que no es conveniente.
ServerLimit
Elevar a 2048 (4 GB RAM), 4096 (8 GB RAM) o 10000 (16 GB RAM) por ejemplo, todo dependerá de la RAM disponible y del tipo de requerimientos.
MaxClients
Dejar igual a ServerLimit
MaxRequestsPerChild
Puede ser adecuado los 4000 predefinido

Monitoreo de Procesos Apache

Apache nos provee un mecanismo para monitorear el uso de sus procesos, mediante el módulo mod_satatus, por defecno no viene configurado por motivos de seguridad. Al momento de habilitar, podemos restringir acceso por IP, cambiar URL de acceso: 

...
#
# ExtendedStatus controls whether Apache will generate "full" status
# information (ExtendedStatus On) or just basic information (ExtendedStatus
# Off) when the "server-status" handler is called. The default is Off.
#
ExtendedStatus On
...
#
# Allow server status reports generated by mod_status,
# with the URL of http://servername/server-status
# Change the ".example.com" to match your domain to enable.
#
<Location /server-status>
    SetHandler server-status
    Order deny,allow
    Deny from all
    Allow from 192.168.1.0/24
</Location>

...

Con ello, podremos observar el uso de los procesos Apache accediendo a la URL "mi-servidor.local/server-satus", lo que arroja un reporte como: 

Apache Server Status for 192.168.1.11

Server Version: Apache/2.2.15 (Unix) DAV/2 PHP/5.3.3
Server Built: Oct 16 2014 14:48:21

Current Time: Monday, 18-May-2015 12:28:54 CLT
Restart Time: Monday, 18-May-2015 00:00:02 CLT
Parent Server Generation: 0
Server uptime: 12 hours 28 minutes 52 seconds
Total accesses: 82397 - Total Traffic: 1003.2 MB
CPU Usage: u279.32 s74.93 cu0 cs0 - .788% CPU load
1.83 requests/sec - 22.9 kB/second - 12.5 kB/request
7 requests currently being processed, 53 idle workers

._.._..__.._._.____._..._..W_....__.__.._...W..._.W__...__...._.
.___....___........._..__W....._..__............W._...__.._._...
___._......W....____....W.._...._.._...._.......................
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Scoreboard Key:
"_" Waiting for Connection, "S" Starting up, "R" Reading Request,
"W" Sending Reply, "K" Keepalive (read), "D" DNS Lookup,
"C" Closing connection, "L" Logging, "G" Gracefully finishing,
"I" Idle cleanup of worker, "." Open slot with no current process

Srv	PID	Acc	M	CPU 	SS	Req	Conn	Child	Slot	Client	VHost	Request
0-0	-	0/0/1056	. 	0.13	911	0	0.0	0.00	7.48 	::1	mi-server.local	OPTIONS * HTTP/1.0
1-0	18550	0/137/708	_ 	0.75	30	12	0.0	0.14	6.69 	proxy.local	mi-server.local	POST /despacho/codigocompra.php HTTP/1.1
2-0	-	0/0/1013	. 	6.67	956	0	0.0	0.00	14.33 	::1	mi-server.local	OPTIONS * HTTP/1.0
3-0	-	0/0/929	. 	0.50	850	0	0.0	0.00	15.76 	::1	mi-server.local	OPTIONS * HTTP/1.0
4-0	48116	0/482/888	_ 	2.52	21	0	0.0	0.53	1.01 	172.17.154.140	siclabqa.vtr.cl	GET /siclab/images/imagenes/sidebar_shadow.png HTTP/1.1
5-0	-	0/0/1239	. 	4.43	854	0	0.0	0.00	6.62 	::1	mi-server.local	OPTIONS * HTTP/1.0
6-0	-	0/0/767	. 	3.83	846	0	0.0	0.00	10.07 	::1	mi-server.local	OPTIONS * HTTP/1.0
7-0	51872	0/585/1037	_ 	3.15	37	11	0.0	1.60	2.13 	proxy.local	mi-server.local	POST /despacho/codigocompra.php HTTP/1.1
8-0	54036	0/633/1135	_ 	6.77	37	11	0.0	22.00	33.45 	proxy.local	mi-server.local	POST /despacho/codigocompra.php HTTP/1.1
9-0	-	0/0/843	. 	4.97	427	0	0.0	0.00	8.36 	::1	mi-server.local	OPTIONS * HTTP/1.0
10-0	-	0/0/764	. 	0.19	897	0	0.0	0.00	8.90 	::1	mi-server.local	OPTIONS * HTTP/1.0
11-0	18558	0/128/875	_ 	0.69	76	63196	0.0	0.14	11.15 	proxy.local	mi-server.local	POST /ingreso/cliente.php HTTP/1.1
12-0	-	0/0/1143	. 	8.10	586	0	0.0	0.00	13.07 	::1	mi-server.local	OPTIONS * HTTP/1.0
13-0	41577	0/686/963	_ 	3.64	63	68	0.0	0.96	1.32 	proxy.local	mi-server.local	GET /despacho/despacho.php HTTP/1.1
14-0	-	0/0/460	. 	0.28	948	0	0.0	0.00	2.48 	::1	mi-server.local	OPTIONS * HTTP/1.0
15-0	43374	0/1163/1163	_ 	8.19	43	0	0.0	12.99	12.99 	proxy.local	mi-server.local	GET /jquery/images/ui-icons_222222_256x240.png HTTP/1.1
16-0	25910	0/939/1239	_ 	4.85	31	11	0.0	1.02	1.84 	proxy.local	mi-server.local	POST /despacho/codigocompra.php HTTP/1.1
17-0	18560	0/161/632	_ 	0.88	36	15	0.0	0.21	13.01 	proxy.local	mi-server.local	POST /despacho/codigocompra.php HTTP/1.1
18-0	18561	0/86/740	_ 	0.48	79	13	0.0	0.08	15.34 	proxy.local	mi-server.local	POST /diagnostico/select_fgen.php HTTP/1.1
19-0	-	0/0/1040	. 	7.21	853	0	0.0	0.00	11.39 	::1	mi-server.local	OPTIONS * HTTP/1.0
20-0	43379	0/1088/1088	_ 	7.99	74	12	0.0	15.41	15.41 	proxy.local	mi-server.local	POST /diagnostico/select_fgen.php HTTP/1.1
21-0	-	0/0/1177	. 	8.34	955	0	0.0	0.00	15.77 	::1	mi-server.local	OPTIONS * HTTP/1.0
22-0	-	0/0/1000	. 	2.33	1042	0	0.0	0.00	14.63 	::1	mi-server.local	OPTIONS * HTTP/1.0
23-0	-	0/0/1035	. 	6.72	1045	0	0.0	0.00	33.26 	::1	mi-server.local	OPTIONS * HTTP/1.0
24-0	27035	0/56/1020	_ 	1.41	33	12	0.0	5.58	25.60 	proxy.local	mi-server.local	POST /despacho/codigocompra.php HTTP/1.1
25-0	-	0/0/915	. 	4.60	540	0	0.0	0.00	8.25 	::1	mi-server.local	OPTIONS * HTTP/1.0
26-0	-	0/0/529	. 	0.29	725	0	0.0	0.00	4.01 	::1	mi-server.local	OPTIONS * HTTP/1.0
27-0	27036	0/68/749	W 	1.84	139	0	0.0	8.75	10.72 	proxy.local	mi-server.local	POST /ingreso/cliente.php HTTP/1.1
28-0	27037	0/33/905	_ 	0.20	35	12	0.0	0.03	2.29 	proxy.local	mi-server.local	POST /despacho/codigocompra.php HTTP/1.1
29-0	-	0/0/705	. 	0.20	472	0	0.0	0.00	5.18 	::1	mi-server.local	OPTIONS * HTTP/1.0
30-0	-	0/0/1082	. 	3.25	1043	0	0.0	0.00	5.40 	::1	mi-server.local	OPTIONS * HTTP/1.0
31-0	-	0/0/573	. 	0.13	851	0	0.0	0.00	0.83 	::1	mi-server.local	OPTIONS * HTTP/1.0
32-0	-	0/0/794	. 	4.24	922	0	0.0	0.00	15.31 	::1	mi-server.local	OPTIONS * HTTP/1.0
33-0	54664	0/552/1059	_ 	4.45	30	12	0.0	10.26	11.36 	proxy.local	mi-server.local	POST /despacho/codigocompra.php HTTP/1.1
34-0	43393	0/1161/1161	_ 	8.25	9	0	0.0	11.18	11.18 	172.17.154.140	siclabqa.vtr.cl	GET /fonts/SF%20Atarian%20System.ttf HTTP/1.1
35-0	-	0/0/844	. 	0.12	921	0	0.0	0.00	21.96 	::1	mi-server.local	OPTIONS * HTTP/1.0
36-0	54853	0/440/742	_ 	2.94	43	1	0.0	3.60	6.68 	proxy.local	mi-server.local	GET /jquery/images/ui-bg_highlight-soft_75_cccccc_1x100.png HTT
37-0	18566	0/62/679	_ 	0.41	43	0	0.0	0.06	10.22 	proxy.local	mi-server.local	GET /jquery/images/ui-bg_glass_55_fbf9ee_1x400.png HTTP/1.1
38-0	-	0/0/733	. 	1.03	780	0	0.0	0.00	5.09 	::1	mi-server.local	OPTIONS * HTTP/1.0
39-0	-	0/0/1153	. 	8.22	893	0	0.0	0.00	13.57 	::1	mi-server.local	OPTIONS * HTTP/1.0
40-0	54856	0/578/1175	_ 	4.19	32	12	0.0	8.08	8.78 	proxy.local	mi-server.local	POST /despacho/codigocompra.php HTTP/1.1
41-0	-	0/0/1021	. 	0.38	411	0	0.0	0.00	4.04 	::1	mi-server.local	OPTIONS * HTTP/1.0
42-0	-	0/0/667	. 	0.34	519	0	0.0	0.00	4.71 	::1	mi-server.local	OPTIONS * HTTP/1.0
43-0	-	0/0/778	. 	0.06	1030	0	0.0	0.00	4.11 	::1	mi-server.local	OPTIONS * HTTP/1.0
44-0	18569	0/73/668	W 	0.48	76	0	0.0	0.09	19.66 	proxy.local	mi-server.local	POST /ingreso/cliente.php HTTP/1.1
45-0	-	0/0/874	. 	2.45	728	0	0.0	0.00	12.58 	::1	mi-server.local	OPTIONS * HTTP/1.0
46-0	-	0/0/964	. 	3.92	458	0	0.0	0.00	7.33 	::1	mi-server.local	OPTIONS * HTTP/1.0
47-0	-	0/0/417	. 	0.19	520	0	0.0	0.00	12.61 	::1	mi-server.local	OPTIONS * HTTP/1.0
48-0	38060	0/727/790	_ 	4.21	4	57	0.0	3.61	4.08 	proxy.local	mi-server.local	GET /ingreso/ingreso_emta.php HTTP/1.1
49-0	-	0/0/549	. 	0.28	622	0	0.0	0.00	7.70 	::1	mi-server.local	OPTIONS * HTTP/1.0
50-0	18632	0/81/279	W 	0.46	139	0	0.0	0.12	11.13 	proxy.local	mi-server.local	POST /ingreso/cliente.php HTTP/1.1
51-0	11588	0/1170/1170	_ 	6.17	13	68	0.0	1.29	1.29 	172.17.154.140	siclabqa.vtr.cl	POST / HTTP/1.1
52-0	18634	0/101/511	_ 	0.62	5	63	0.0	0.10	0.53 	172.17.45.15	mi-server.local	GET /admin/moduser.php HTTP/1.1
53-0	-	0/0/261	. 	0.12	919	0	0.0	0.00	0.28 	::1	mi-server.local	OPTIONS * HTTP/1.0
54-0	-	0/0/824	. 	4.88	439	0	0.0	0.00	8.99 	::1	mi-server.local	OPTIONS * HTTP/1.0
55-0	-	0/0/743	. 	5.02	943	0	0.0	0.00	22.51 	::1	mi-server.local	OPTIONS * HTTP/1.0
56-0	18636	0/110/420	_ 	0.62	43	0	0.0	0.11	0.51 	proxy.local	mi-server.local	GET /jquery/images/ui-bg_glass_75_dadada_1x400.png HTTP/1.1
57-0	27063	0/79/363	_ 	0.42	43	0	0.0	0.09	11.17 	proxy.local	mi-server.local	GET /jquery/images/ui-bg_glass_75_e6e6e6_1x400.png HTTP/1.1
58-0	-	0/0/391	. 	0.14	729	0	0.0	0.00	0.41 	::1	mi-server.local	OPTIONS * HTTP/1.0
59-0	-	0/0/872	. 	8.94	949	0	0.0	0.00	25.97 	::1	mi-server.local	OPTIONS * HTTP/1.0
60-0	-	0/0/632	. 	0.28	1349	0	0.0	0.00	0.69 	::1	mi-server.local	OPTIONS * HTTP/1.0
61-0	-	0/0/346	. 	0.00	2143	0	0.0	0.00	0.41 	::1	mi-server.local	OPTIONS * HTTP/1.0
62-0	38066	0/662/820	_ 	5.09	33	12	0.0	10.27	10.52 	proxy.local	mi-server.local	POST /despacho/codigocompra.php HTTP/1.1
63-0	-	0/0/977	. 	6.61	1618	0	0.0	0.00	11.06 	::1	mi-server.local	OPTIONS * HTTP/1.0
64-0	-	0/0/844	. 	7.63	457	0	0.0	0.00	18.99 	::1	mi-server.local	OPTIONS * HTTP/1.0
65-0	18644	0/59/215	_ 	0.37	31	12	0.0	0.05	0.23 	proxy.local	mi-server.local	POST /despacho/codigocompra.php HTTP/1.1
66-0	18645	0/73/174	_ 	0.53	62	0	0.0	0.50	0.58 	proxy.local	mi-server.local	GET /jquery/images/ui-bg_flat_75_ffffff_40x100.png HTTP/1.1
67-0	18646	0/51/358	_ 	0.33	79	13	0.0	0.05	0.37 	proxy.local	mi-server.local	GET /barcodegen/test_1D.php?text=001C11FD5CFC HTTP/1.1
68-0	-	0/0/278	. 	0.34	1350	0	0.0	0.00	0.26 	::1	mi-server.local	OPTIONS * HTTP/1.0
69-0	-	0/0/369	. 	0.23	946	0	0.0	0.00	0.38 	::1	mi-server.local	OPTIONS * HTTP/1.0
70-0	-	0/0/393	. 	0.21	1701	0	0.0	0.00	20.13 	::1	mi-server.local	OPTIONS * HTTP/1.0
71-0	-	0/0/871	. 	6.17	1708	0	0.0	0.00	9.24 	::1	mi-server.local	OPTIONS * HTTP/1.0
72-0	17098	0/1190/1190	_ 	7.40	2	0	0.0	8.71	8.71 	proxy.local	mi-server.local	GET /jquery/images/ui-bg_flat_75_ffffff_40x100.png HTTP/1.1
73-0	18654	0/119/324	_ 	0.63	9	0	0.0	0.12	0.32 	172.17.154.140	siclabqa.vtr.cl	GET /siclab/images/secondary_bar.png HTTP/1.1
74-0	25922	0/885/906	_ 	9.44	13	0	0.0	28.07	28.10 	172.17.154.140	siclabqa.vtr.cl	GET /fonts/SF%20Atarian%20System.ttf HTTP/1.1
75-0	-	0/0/648	. 	3.04	583	0	0.0	0.00	0.71 	::1	mi-server.local	OPTIONS * HTTP/1.0
76-0	-	0/0/405	. 	0.31	419	0	0.0	0.00	1.72 	::1	mi-server.local	OPTIONS * HTTP/1.0
77-0	-	0/0/293	. 	0.34	1270	0	0.0	0.00	0.38 	::1	mi-server.local	OPTIONS * HTTP/1.0
78-0	-	0/0/535	. 	0.30	1244	0	0.0	0.00	6.84 	::1	mi-server.local	OPTIONS * HTTP/1.0
79-0	-	0/0/272	. 	0.07	1699	0	0.0	0.00	1.42 	::1	mi-server.local	OPTIONS * HTTP/1.0
80-0	-	0/0/95	. 	0.65	1491	0	0.0	0.00	1.26 	::1	mi-server.local	OPTIONS * HTTP/1.0
81-0	-	0/0/253	. 	0.31	503	0	0.0	0.00	15.97 	::1	mi-server.local	OPTIONS * HTTP/1.0
82-0	-	0/0/247	. 	0.09	1493	0	0.0	0.00	0.26 	::1	mi-server.local	OPTIONS * HTTP/1.0
83-0	-	0/0/255	. 	0.33	736	0	0.0	0.00	7.39 	::1	mi-server.local	OPTIONS * HTTP/1.0
84-0	18663	0/105/387	_ 	0.63	31	12	0.0	0.16	0.48 	proxy.local	mi-server.local	POST /despacho/codigocompra.php HTTP/1.1
85-0	-	0/0/347	. 	0.33	1433	0	0.0	0.00	0.35 	::1	mi-server.local	OPTIONS * HTTP/1.0
86-0	-	0/0/562	. 	4.97	836	0	0.0	0.00	11.20 	::1	mi-server.local	OPTIONS * HTTP/1.0
87-0	18665	0/118/390	_ 	0.61	2	21	0.0	0.13	4.33 	proxy.local	mi-server.local	POST /van/inscripcion_frm.php HTTP/1.1
88-0	38074	0/703/713	_ 	5.16	2	0	0.0	7.99	7.99 	proxy.local	mi-server.local	GET /siclab/images/secondary_bar.png HTTP/1.1
89-0	18666	0/100/306	W 	0.58	13	0	0.0	0.13	0.37 	proxy.local	mi-server.local	POST /ingreso/cliente.php HTTP/1.1
90-0	-	0/0/307	. 	0.59	489	0	0.0	0.00	0.32 	::1	mi-server.local	OPTIONS * HTTP/1.0
91-0	-	0/0/846	. 	6.62	1245	0	0.0	0.00	12.25 	::1	mi-server.local	OPTIONS * HTTP/1.0
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94-0	-	0/0/724	. 	0.46	1247	0	0.0	0.00	7.10 	::1	mi-server.local	OPTIONS * HTTP/1.0
95-0	18716	0/73/108	_ 	0.55	13	0	0.0	0.14	0.23 	172.17.154.140	siclabqa.vtr.cl	GET /siclab/images/secondary_bar.png HTTP/1.1
96-0	-	0/0/672	. 	4.61	1347	0	0.0	0.00	7.51 	::1	mi-server.local	OPTIONS * HTTP/1.0
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98-0	18718	0/71/96	_ 	0.51	13	0	0.0	0.78	3.04 	172.17.154.140	siclabqa.vtr.cl	GET /siclab/images/imagenes/sidebar_shadow.png HTTP/1.1
99-0	38126	0/699/699	_ 	9.83	13	126364	0.0	37.82	37.82 	proxy.local	mi-server.local	POST /ingreso/cliente.php HTTP/1.1
100-0	-	0/0/41	. 	0.09	577	0	0.0	0.00	0.04 	::1	mi-server.local	OPTIONS * HTTP/1.0
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103-0	-	0/0/689	. 	4.15	1351	0	0.0	0.00	3.87 	::1	mi-server.local	OPTIONS * HTTP/1.0
104-0	-	0/0/88	. 	0.21	1700	0	0.0	0.00	0.08 	::1	mi-server.local	OPTIONS * HTTP/1.0
105-0	-	0/0/769	. 	3.95	567	0	0.0	0.00	0.92 	::1	mi-server.local	OPTIONS * HTTP/1.0
106-0	-	0/0/669	. 	4.52	947	0	0.0	0.00	7.46 	::1	mi-server.local	OPTIONS * HTTP/1.0
107-0	-	0/0/399	. 	2.88	1721	0	0.0	0.00	4.76 	::1	mi-server.local	OPTIONS * HTTP/1.0
108-0	-	0/0/586	. 	3.15	1696	0	0.0	0.00	0.74 	::1	mi-server.local	OPTIONS * HTTP/1.0
109-0	-	0/0/41	. 	0.18	1041	0	0.0	0.00	0.03 	::1	mi-server.local	OPTIONS * HTTP/1.0
110-0	-	0/0/732	. 	5.06	1044	0	0.0	0.00	7.95 	::1	mi-server.local	OPTIONS * HTTP/1.0
111-0	-	0/0/65	. 	0.05	2125	0	0.0	0.00	0.06 	::1	mi-server.local	OPTIONS * HTTP/1.0
112-0	38141	0/755/755	W 	5.81	0	0	0.0	12.05	12.05 	172.17.45.15	mi-server.local	GET /server-status HTTP/1.1
113-0	-	0/0/134	. 	0.04	1046	0	0.0	0.00	0.86 	::1	mi-server.local	OPTIONS * HTTP/1.0
114-0	18726	0/118/168	_ 	0.69	79	18	0.0	0.11	0.16 	proxy.local	mi-server.local	POST /diagnostico/select_fgen.php HTTP/1.1
115-0	-	0/0/324	. 	0.04	1475	0	0.0	0.00	14.03 	::1	mi-server.local	OPTIONS * HTTP/1.0
116-0	-	0/0/102	. 	0.38	1488	0	0.0	0.00	0.10 	::1	mi-server.local	OPTIONS * HTTP/1.0
117-0	-	0/0/573	. 	4.93	734	0	0.0	0.00	10.82 	::1	mi-server.local	OPTIONS * HTTP/1.0
118-0	38147	0/760/760	_ 	5.02	21	0	0.0	7.24	7.24 	172.17.154.140	siclabqa.vtr.cl	GET /siclab/images/imagenes/btn_submit.png HTTP/1.1
119-0	38148	0/753/753	_ 	7.38	9	0	0.0	19.27	19.27 	172.17.154.140	siclabqa.vtr.cl	GET /siclab/images/imagenes/btn_submit.png HTTP/1.1
120-0	-	0/0/41	. 	0.00	2141	0	0.0	0.00	0.03 	::1	mi-server.local	OPTIONS * HTTP/1.0
121-0	-	0/0/37	. 	0.00	2140	0	0.0	0.00	0.03 	::1	mi-server.local	OPTIONS * HTTP/1.0
122-0	18742	0/97/144	_ 	0.71	9	0	0.0	0.96	1.67 	172.17.154.140	siclabqa.vtr.cl	GET /siclab/images/imagenes/sidebar_shadow.png HTTP/1.1
123-0	-	0/0/157	. 	0.39	731	0	0.0	0.00	0.17 	::1	mi-server.local	OPTIONS * HTTP/1.0
124-0	18744	0/190/487	_ 	1.76	5	4	0.0	3.91	8.08 	172.17.45.15	mi-server.local	GET /admin/moduser.php?file=favicon.ico&version=4.2.0 HTTP/1.1
125-0	-	0/0/672	. 	5.45	1248	0	0.0	0.00	11.93 	::1	mi-server.local	OPTIONS * HTTP/1.0
126-0	-	0/0/74	. 	0.20	795	0	0.0	0.00	0.07 	::1	mi-server.local	OPTIONS * HTTP/1.0
127-0	-	0/0/124	. 	0.55	898	0	0.0	0.00	0.15 	::1	mi-server.local	OPTIONS * HTTP/1.0
128-0	18747	0/88/140	_ 	0.57	31	10	0.0	0.11	0.19 	proxy.local	mi-server.local	POST /despacho/codigocompra.php HTTP/1.1
129-0	18748	0/183/183	_ 	0.99	2	0	0.0	0.22	0.22 	proxy.local	mi-server.local	GET /siclab/images/imagenes/sidebar_shadow.png HTTP/1.1
130-0	18749	0/197/197	_ 	1.06	5	15	0.0	0.22	0.22 	172.17.45.15	mi-server.local	GET /admin/moduser.php?file=default.css&version=4.2.0 HTTP/1.1
131-0	-	0/0/43	. 	0.25	837	0	0.0	0.00	0.05 	::1	mi-server.local	OPTIONS * HTTP/1.0
132-0	18751	0/125/125	_ 	1.08	2	0	0.0	1.47	1.47 	proxy.local	mi-server.local	GET /siclab/images/imagenes/btn_submit.png HTTP/1.1
133-0	-	0/0/41	. 	0.21	1671	0	0.0	0.00	0.04 	::1	mi-server.local	OPTIONS * HTTP/1.0
134-0	-	0/0/88	. 	0.39	1411	0	0.0	0.00	0.09 	::1	mi-server.local	OPTIONS * HTTP/1.0
135-0	-	0/0/146	. 	0.74	535	0	0.0	0.00	0.22 	::1	mi-server.local	OPTIONS * HTTP/1.0
136-0	-	0/0/109	. 	0.63	782	0	0.0	0.00	0.14 	::1	mi-server.local	OPTIONS * HTTP/1.0
137-0	-	0/0/66	. 	1.67	1479	0	0.0	0.00	9.49 	::1	mi-server.local	OPTIONS * HTTP/1.0
138-0	-	0/0/66	. 	0.32	1489	0	0.0	0.00	0.07 	::1	mi-server.local	OPTIONS * HTTP/1.0
139-0	18789	0/146/146	W 	1.06	139	0	0.0	1.43	1.43 	proxy.local	mi-server.local	POST /ingreso/cliente.php HTTP/1.1
140-0	-	0/0/40	. 	0.21	1685	0	0.0	0.00	0.04 	::1	mi-server.local	OPTIONS * HTTP/1.0
141-0	-	0/0/40	. 	0.22	1490	0	0.0	0.00	0.04 	::1	mi-server.local	OPTIONS * HTTP/1.0
142-0	-	0/0/90	. 	0.53	607	0	0.0	0.00	0.10 	::1	mi-server.local	OPTIONS * HTTP/1.0
143-0	-	0/0/66	. 	0.30	1426	0	0.0	0.00	0.07 	::1	mi-server.local	OPTIONS * HTTP/1.0
144-0	18794	0/110/110	_ 	0.70	9	625	0.0	0.18	0.18 	172.17.154.140	siclabqa.vtr.cl	GET /ingreso/ingreso_stb.php HTTP/1.1
145-0	18795	0/97/97	_ 	0.59	40	13	0.0	0.08	0.08 	proxy.local	mi-server.local	POST /despacho/modelos.php HTTP/1.1
146-0	18796	0/135/135	_ 	0.73	21	15	0.0	0.16	0.16 	172.17.154.140	siclabqa.vtr.cl	GET / HTTP/1.1
147-0	18797	0/138/138	_ 	0.72	5	27	0.0	0.17	0.17 	172.17.45.15	mi-server.local	GET /admin/moduser.php?file=functions.js&version=4.2.0 HTTP/1.
148-0	-	0/0/175	. 	1.35	347	0	0.0	0.00	1.55 	::1	mi-server.local	OPTIONS * HTTP/1.0
149-0	-	0/0/1	. 	0.00	2138	0	0.0	0.00	0.00 	::1	mi-server.local	OPTIONS * HTTP/1.0
150-0	-	0/0/1	. 	0.00	2137	0	0.0	0.00	0.00 	::1	mi-server.local	OPTIONS * HTTP/1.0
151-0	-	0/0/55	. 	0.31	1485	0	0.0	0.00	0.06 	::1	mi-server.local	OPTIONS * HTTP/1.0
152-0	18802	0/106/106	W 	1.64	139	0	0.0	4.38	4.38 	proxy.local	mi-server.local	POST /ingreso/cliente.php HTTP/1.1
153-0	-	0/0/98	. 	0.54	591	0	0.0	0.00	0.11 	::1	mi-server.local	OPTIONS * HTTP/1.0
154-0	-	0/0/83	. 	0.44	549	0	0.0	0.00	0.09 	::1	mi-server.local	OPTIONS * HTTP/1.0
155-0	18805	0/164/164	_ 	0.88	21	0	0.0	0.21	0.21 	172.17.154.140	siclabqa.vtr.cl	GET /fonts/SF%20Atarian%20System.ttf HTTP/1.1
156-0	-	0/0/113	. 	1.71	1342	0	0.0	0.00	5.79 	::1	mi-server.local	OPTIONS * HTTP/1.0
157-0	-	0/0/36	. 	0.83	1709	0	0.0	0.00	2.37 	::1	mi-server.local	OPTIONS * HTTP/1.0
158-0	-	0/0/76	. 	0.40	939	0	0.0	0.00	0.07 	::1	mi-server.local	OPTIONS * HTTP/1.0
159-0	-	0/0/94	. 	0.45	1410	0	0.0	0.00	0.10 	::1	mi-server.local	OPTIONS * HTTP/1.0
160-0	18810	0/104/104	_ 	0.61	38	12	0.0	0.11	0.11 	proxy.local	mi-server.local	POST /despacho/codigocompra.php HTTP/1.1
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162-0	-	0/0/28	. 	0.20	920	0	0.0	0.00	0.03 	::1	mi-server.local	OPTIONS * HTTP/1.0
163-0	18813	0/171/171	_ 	0.98	79	13	0.0	0.17	0.17 	proxy.local	mi-server.local	POST /diagnostico/select_eoracle.php HTTP/1.1
164-0	-	0/0/147	. 	0.76	497	0	0.0	0.00	0.16 	::1	mi-server.local	OPTIONS * HTTP/1.0
165-0	-	0/0/66	. 	0.35	1494	0	0.0	0.00	0.07 	::1	mi-server.local	OPTIONS * HTTP/1.0
166-0	-	0/0/93	. 	1.10	479	0	0.0	0.00	3.74 	::1	mi-server.local	OPTIONS * HTTP/1.0
167-0	-	0/0/152	. 	2.13	548	0	0.0	0.00	9.59 	::1	mi-server.local	OPTIONS * HTTP/1.0
168-0	18818	0/157/157	_ 	0.84	74	13	0.0	0.16	0.16 	proxy.local	mi-server.local	POST /diagnostico/select_fgen.php HTTP/1.1
Srv	Child Server number - generation
PID	OS process ID
Acc	Number of accesses this connection / this child / this slot
M	Mode of operation
CPU	CPU usage, number of seconds
SS	Seconds since beginning of most recent request
Req	Milliseconds required to process most recent request
Conn	Kilobytes transferred this connection
Child	Megabytes transferred this child
Slot	Total megabytes transferred this slot
Apache/2.2.15 (CentOS) Server at 192.168.1.11 Port 80
Escrito por: Luis Hernán de la Barra, 18/05/2015
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Wyzer
Luis Hernán de la Barra
Teléfono:   +56995451689
WhatsApp:   +56995451689
E-Mail:info@wyzer.cl
Web:www.wyzer.cl