我已经努力解决以下问题一段时间了,非常感谢您的帮助。
由于 php 线程过多,我的网络服务器经常会完全崩溃。php 进程数稳定在正常范围内(例如 35 个进程)。每个进程的线程数会随着时间的推移不断增加。几个小时后,所有 php 进程中所有线程的总和会超过 900 - 此时正常的服务器操作开始关闭。
以下是我计算进程和线程数量的方法:
ps axo pid,nlwp,cmd | grep "pool www"
15674 11 php-fpm: pool www
15675 13 php-fpm: pool www
15676 8 php-fpm: pool www
15677 7 php-fpm: pool www
15678 12 php-fpm: pool www
...还有 30 多行类似的内容
我在跑步
- 虚拟服务器
- 8 GB 内存
- 4 个 vCore
- Ubuntu 16.04
- nginx 1.10.3
- php-fpm 7.0.3
我的.../fpm/pool.d/www.conf 看起来像这样(按字母顺序排列):
user = www-data
request_terminate_timeout = 600s
pm.start_servers = 20
pm.min_spare_servers = 20
pm.max_spare_servers = 35
pm.max_requests = 500
pm.max_children = 72
pm = dynamic
listen.owner = www-data
listen.group = www-data
listen = /run/php/php7.0-fpm.sock
group = www-data
env[TMP] = /tmp
env[TMPDIR] = /tmp
env[TEMP] = /tmp
env[PATH] = /usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games
env[HOSTNAME] = $HOSTNAME
我的 nginx 配置如下:
user www-data;
worker_processes auto;
pid /run/nginx.pid;
events {
worker_connections 1024;
# multi_accept on;
}
http {
client_max_body_size 501m;
sendfile on;
tcp_nopush on;
tcp_nodelay on;
keepalive_timeout 3;
types_hash_max_size 2048;
server_names_hash_max_size 8192;
include /etc/nginx/mime.types;
default_type application/octet-stream;
log_format main '$remote_addr - $host $remote_user [$time_local] "$request" '
'$status $body_bytes_sent "$http_referer" '
'"$http_user_agent" "$http_x_forwarded_for"';
ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
ssl_prefer_server_ciphers on;
map $status $loggable {
~^404 0;
default 1;
}
access_log /var/log/nginx/access.log;
error_log /var/log/nginx/error.log ;
gzip on;
gzip_disable "msie6";
application/xml+rss text/javascript;
gzip_min_length 1100;
gzip_vary on;
gzip_comp_level 2;
gzip_proxied any;
gzip_types text/plain text/css application/x-javascript text/xml application/xml application/xml+rss text/javascript;
include /etc/nginx/conf.d/*.conf;
include /etc/nginx/sites-enabled/*;
limit_conn_zone $binary_remote_addr zone=addr:10m;
limit_conn addr 50;
fastcgi_cache_path /etc/nginx/cache levels=1:2 keys_zone=YOURAPP:100m inactive=60m;
fastcgi_cache_key "$scheme$request_method$host$request_uri";
upstream php {
server unix:/run/php/php7.0-fpm.sock;
}
map $http_upgrade $connection_upgrade {
default upgrade;
'' close;
}
}
server {
listen 443 ssl;
server_name www.mydomain.com;
root /var/www/path/to/webfiles;
# ssl specs here
# some general location stuff here
location ~ \.php$ {
regex to split $uri to $fastcgi_script_name and $fastcgi_path
fastcgi_split_path_info ^(.+\.php)(/.+)$;
try_files $fastcgi_script_name =404;
set $path_info $fastcgi_path_info;
fastcgi_param PATH_INFO $path_info;
fastcgi_index index.php;
include fastcgi.conf;
fastcgi_cache_bypass 1;
fastcgi_no_cache 1;
fastcgi_pass unix:/run/php/php7.0-fpm.sock;
fastcgi_buffer_size 128k;
fastcgi_buffers 256 4k;
fastcgi_busy_buffers_size 256k;
fastcgi_temp_file_write_size 256k;
fastcgi_cache YOURAPP;
fastcgi_cache_valid 200 60m;
fastcgi_read_timeout 600s;
}
}
似乎存在与服务器上正在运行的 z-push 服务的连接。它用于将服务器数据(联系人、日历、邮件)与移动设备同步。关闭该特定服务后,线程数停止增加。到目前为止,我找不到 z-push/nginx/php 的配置,它允许我在不淹没服务器的情况下使用同步。我尝试使用“静态”和“按需”配置来生成 php 进程 - 但这没有任何显著的区别。
如果您有任何提示或说明,我将不胜感激。
提前谢谢您,
史蒂夫
答案1
这个问题与 Kopano Core 有关。当我一个月前将其更新到 8.6.82 版本时,所有与线程相关的问题都立即消失了。迟做总比不做好。感谢大家的建议!