Problem in settings php-fpm

hi
I've used apache and php-fpm Handlers on my web server
Web pages open at very low speeds
And some pages give 503 errors
I get the following warnings in php-fpm

Alerts in php-fpm

[03-Mar-2018 17:58:17] NOTICE: [pool i] child 17630 started
[03-Mar-2018 17:58:17] WARNING: [pool i] child 16165 exited on signal 15 (SIGTERM) after 666.682314 seconds from start
[03-Mar-2018 17:58:17] NOTICE: [pool i] child 17632 started
[03-Mar-2018 17:58:17] WARNING: [pool i] child 10093 exited on signal 15 (SIGTERM) after 3366.770932 seconds from start
[03-Mar-2018 17:58:17] NOTICE: [pool i] child 17633 started
[03-Mar-2018 17:59:24] WARNING: [pool i] child 16246, script '/home/i/public_html//index.php' (request: "GET /index.php") execution timed out (122.887458 sec), terminating
[03-Mar-2018 17:59:24] WARNING: [pool i] child 10094, script '/home/i/public_html//index.php' (request: "GET /index.php") execution timed out (121.696227 sec), terminating
[03-Mar-2018 17:59:24] WARNING: [pool i] child 10094 exited on signal 15 (SIGTERM) after 3433.427482 seconds from start
[03-Mar-2018 17:59:24] NOTICE: [pool i] child 17759 started
[03-Mar-2018 17:59:24] WARNING: [pool i] child 16246 exited on signal 15 (SIGTERM) after 666.642643 seconds from start
[03-Mar-2018 17:59:24] NOTICE: [pool i] child 17760 started
[03-Mar-2018 17:59:57] WARNING: [pool i] child 10099, script '/home/i/public_html//wp-admin/admin-ajax.php' (request: "POST /wp-admin/admin-ajax.php") execution timed out (104.887523 sec), terminating
[03-Mar-2018 17:59:57] WARNING: [pool i] child 10099 exited on signal 15 (SIGTERM) after 3466.757274 seconds from start
[03-Mar-2018 17:59:57] NOTICE: [pool i] child 17782 started


The settings for the Web site are as follows

<VirtualHost 192.168.20.202:80>
    ServerName wwww.i
    DocumentRoot /home/i/public_html
ServerAlias i
   ErrorLog /var/log/httpd/i.log
    CustomLog /var/log/httpd/i.log combined
<Directory /home/i/public_html>
Options -Indexes -ExecCGI +SymLinksIfOwnerMatch -Includes
#AllowOverride All
 #   Require all granted
</Directory>
DirectoryIndex index.php
<FilesMatch \.php$>
        SetHandler "proxy:fcgi://127.0.0.1:9000"
    </FilesMatch>
ProxyPassMatch ^/(.+\.php.*)$ fcgi://127.0.0.1:9000/home/i/public_html/ timeout=1800
<IfModule mod_fastcgi.c>
fastcgi_read_timeout 150
</IfModule>
</VirtualHost>


How can I fix this problem?
thanks

I saw this thread created yesterday and thought that you would get responses from people who know far more about web servers than me. However, one day later and no response so here goes.

I've installed and manipulated the parameters of Apache and PHP many times and found the parameters set can make a whole load of difference to performance and other buggy issues. I would suggest that you start to launch your own investigation by adjusting some of the parameters.

A quick search found these two discussions which may be of interest:

nginx - pool www exited on signal 15 (SIGTERM): execution timed out - Server Fault

php5-fpm lockup daily - serious system problem * Issue #562 * warmshowers/Warmshowers.org * GitHub

Good luck.