Перестали "убиваться" запросы apache (Sending Reply)

Есть сервак i7-920, 8Gb RAM.

Стоит Ubuntu, Apache/2.2.12, PHP/5.2.10+XCache и MySQL.

Общая посещаемость сайтов на серваке около 50к уник. Из них половина - крупный форум на IPB

Для отдачи картинок стоит nginx.

В последнее время сервак стал виснуть, то nginx ошибку выдает (кажется 504), то вообще не откликается по http, приходится по SSH заходить и ребутить. Раньше такого не наблюдал, с серваком в последнее время ничего не делал, разве что XCache изменил немнго настройки

Заметил, что в server-status "висит" много запросов к одному скрипту search.php:

В общем то сам скрипт представляет из себя поиск по сайту через сервис xml.yandex

Строка кода:

@ $fp = fsockopen("xmlsearch.yandex.ru", 80, $err, $err, 10);

	if ($fp){

		$n = "\r\n";

		$request_header = 'POST /xmlsearch?user=******************* HTTP/1.0'.$n.

		     'Host: xmlsearch.yandex.ru'.$n.

		     'Content-Type: text/plain'.$n.

		     'Content-Length: '.strlen($request).$n.$n;

		     

		$request = $request_header.$request;

		

		fputs($fp, $request);

		

		while(!feof($fp)) $xml_respose .= fgets($fp, 128);

		fclose($fp);

	}

..................

Дальше идет разбор ответа

Таймаут 10 сек есть в скрипте.

В терминале команда htop:

Видно также, что процессы висят длительное время и не уничтожаются.

Фрагмент apache2.conf:

Timeout 300

KeepAlive On

MaxKeepAliveRequests 150

KeepAliveTimeout 30



##

## Server-Pool Size Regulation (MPM specific)

## 



ServerLimit 100



# 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

# MaxClients: maximum number of server processes allowed to start

# MaxRequestsPerChild: maximum number of requests a server process serves

<IfModule mpm_prefork_module>

    StartServers          5

    MinSpareServers       5

    MaxSpareServers      10

    MaxClients          100

    MaxRequestsPerChild   0

</IfModule>



# worker MPM

# StartServers: initial number of server processes to start

# MaxClients: maximum number of simultaneous client connections

# MinSpareThreads: minimum number of worker threads which are kept spare

# MaxSpareThreads: maximum number of worker threads which are kept spare

# ThreadsPerChild: constant number of worker threads in each server process

# MaxRequestsPerChild: maximum number of requests a server process serves

<IfModule mpm_worker_module>

    StartServers          2

    MinSpareThreads      25

    MaxSpareThreads      75 

    ThreadLimit          64

    ThreadsPerChild      25

    MaxClients          100

    MaxRequestsPerChild   0

</IfModule>



# event MPM

# StartServers: initial number of server processes to start

# MaxClients: maximum number of simultaneous client connections

# MinSpareThreads: minimum number of worker threads which are kept spare

# MaxSpareThreads: maximum number of worker threads which are kept spare

# ThreadsPerChild: constant number of worker threads in each server process

# MaxRequestsPerChild: maximum number of requests a server process serves

<IfModule mpm_event_module>

    StartServers          2

    MaxClients          100

    MinSpareThreads      25

    MaxSpareThreads      75 

    ThreadLimit          64

    ThreadsPerChild      25

    MaxRequestsPerChild   0

</IfModule>

 

В php.ini директива max_execution_time = 30;

tolik777 добавил 10.12.2011 в 09:53

Конфиг XCache на всякий случай:

# configuration for php Xcache module



[xcache-common]

;; install as zend extension (recommended), normally "$extension_dir/xcache.so"

zend_extension = /usr/lib/php5/20060613+lfs/xcache.so



[xcache.admin]

xcache.admin.enable_auth = On

# Configure this to use admin pages

 xcache.admin.user = "****"

; xcache.admin.pass = md5($your_password)

 xcache.admin.pass = "****"



[xcache]

; ini only settings, all the values here is default unless explained



; select low level shm/allocator scheme implemenation

xcache.shm_scheme =        "mmap"

; to disable: xcache.size=0

; to enable : xcache.size=64M etc (any size > 0) and your system mmap allows

xcache.size  =                128M

; set to cpu count (cat /proc/cpuinfo |grep -c processor)

xcache.count =                 8

; just a hash hints, you can always store count(items) > slots

xcache.slots =                8K

; ttl of the cache item, 0=forever

xcache.ttl   =                 0

; interval of gc scanning expired items, 0=no scan, other values is in seconds

xcache.gc_interval =           0



; same as aboves but for variable cache

xcache.var_size  =            32M

xcache.var_count =             8

xcache.var_slots =            8K

; default ttl

xcache.var_ttl   =             0

xcache.var_maxttl   =          0

xcache.var_gc_interval =     300



xcache.test =                Off

; N/A for /dev/zero

xcache.readonly_protection = Off

; for *nix, xcache.mmap_path is a file path, not directory.

; Use something like "/tmp/xcache" if you want to turn on ReadonlyProtection

; 2 group of php won't share the same /tmp/xcache

; for win32, xcache.mmap_path=anonymous map name, not file path

xcache.mmap_path =    "/dev/zero"





; leave it blank(disabled) or "/tmp/phpcore/"

; make sure it's writable by php (without checking open_basedir)

xcache.coredump_directory =   ""



; per request settings

xcache.cacher =               On

xcache.stat   =               On

xcache.optimizer =           Off



[xcache.coverager]

; per request settings

; enable coverage data collecting for xcache.coveragedump_directory and xcache_coverager_start/stop/get/clean() functions (will hurt executing performance)

xcache.coverager =          Off



; ini only settings

; make sure it's readable (care open_basedir) by coverage viewer script

; requires xcache.coverager=On

xcache.coveragedump_directory = ""