cURL error 6: Could not resolve host: example.com: Name or service not known
PHP-FPM restart fails: An another FPM instance seems to already listen on php-fpm.sock
A website is not accessible with "Nginx 504 Gateway Time-out"
Website hosted in Plesk is not accessible or working slowly on PHP-FPM: server reached max_children setting or Bad file descriptor (9)
Initial requests to website on Plesk with cache HIT are not logged if nginx caching is enabled
The phpinfo() page shows wrong PHP version
Is there any debug logging for ModSecurity module in Plesk?
Website is not accessible: Could not load type 'System.ServiceModel.Activation.HttpModule' from assembly
Command httpd -t shows warning: [pagespeed:warn] ModPagespeedInheritVHostConfig is deprecated. Please remove it from your configuration.
Website does not process *.php files: Error 404.2 The page you are requesting cannot be served because of the ISAPI and CGI Restriction list settings on the Web server.

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How to check which domain PHP process consumes CPU resources?

Updated August 10, 2018 13:16

Applicable to:

Plesk for Linux

Question

How to identify the domain PHP process that consumes CPU resources?

Answer

Server load can be monitored with the command top -c.

If the website is using FastCGI handler, the whole path will be shown to the file php.ini in the utility output. In this path the domain will be:

# top -c
12479 john_doe 20 0 362156 39324 29044 S 13.6 1.9 0:00.41 /usr/bin/php5-cgi -c /var/www/vhosts/system/example.com/etc/php.ini
....

If the website is using FPM handler, the utility output will be the following:

# top -c
16397 john_doe 20 0 370640 31544 21292 S 12.6 1.5 0:00.38 php-fpm: pool example.om
....

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