server reached MaxClients setting, consider raising the MaxClients setting.
Please raise MaxClients and ServerLimit and restart Apache.
Edit /etc/apache2/apache2.conf and edit the follow!
or /etc/httpd/httpd.conf
MaxClients
On start up, Apache will create a number of processes (Servers), and will handle a maximum of simultaneous requests (MaxClients). Any connection attempts over MaxClients will be queued. The MaxClients maximum value is capped by Here is a default setting for a Debian/Ubuntu box:
<IfModule prefork.c>
StartServers 5
MinSpareServers 5
MaxSpareServers 10
MaxClients 20
MaxRequestsPerChild 0
</IfModule>
StartServers 5
MinSpareServers 5
MaxSpareServers 10
MaxClients 20
MaxRequestsPerChild 0
</IfModule>
In order to handle more request at the same time, someone could use settings like:
<IfModule prefork.c>
StartServers 15
MinSpareServers 10
MaxSpareServers 20
ServerLimit 512
MaxClients 512
MaxRequestsPerChild 0
</IfModule>
StartServers 15
MinSpareServers 10
MaxSpareServers 20
ServerLimit 512
MaxClients 512
MaxRequestsPerChild 0
</IfModule>
http://www.howtoforge.com/forums/showthread.php?t=34231
http://serverfault.com/questions/61843/100-apache-cpu-usage-after-upgrade
http://ubuntuforums.org/showthread.php?t=389233
http://www.debuntu.org/simple-apache-optimization-tips