Article ID: 119314, created on Dec 25, 2013, last review on Nov 22, 2015

  • Applies to:
  • Plesk for Linux/Unix
  • Virtuozzo 6.0


Loading the website takes too much time.

The following error appears in the /var/log/httpd/error_log:

 [error] server reached MaxClients setting, consider raising the MaxClients setting
 [warn] mod_fcgid: process 2968 graceful kill fail, sending SIGKILL


The connections limit defined by MaxClients is reached.


1) By default, Apache in Plesk is not configured for high-loaded sites. It is recommended to tune the Apache server. To resolve this particular issue with the MaxClients limit, adjust the /etc/httpd/conf/httpd.conf file, increasing the MaxClients value (e.g., to 100):

<IfModule prefork.c>
StartServers       1
MaxClients        100
MinSpareThreads    1
MaxSpareThreads    4
ThreadsPerChild     25
MaxRequestsPerChild  0

Note: If the error persists, consider increasing the MaxClients limit again until the issue is fixed.

2) If you still see the same message in the Apache log, please check all files where MaxClients settings exist:

    # find /etc -type f -exec grep -l 'MaxClients' {} +

NOTE: If you are using Debian/Ubuntu Linux distributions, replace all occurrences of /etc/httpd to /etc/apache2 and /var/log/httpd to /var/log/apache2 in the above instructions.

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