ASIADATA
November 15th, 2010, 22:43
>:)=D>
Apache Timeout setting
The timeout setting is the number of seconds before data "sends" or "receives" (to or from the client) time out. Having this set to a high number forces site visitors to "wait in line" which adds extra load to the server.
First backup the file with the following command:
cp /etc/httpd/conf/httpd.conf /etc/httpd/conf/httpd.bkup.kb-246.1
The following command opens httpd.conf and searches for the term Timeout:
vi +/Timeout /etc/httpd/conf/httpd.conf You should see the following lines:
# Timeout: The number of seconds before receives and sends time out.
Timeout 120
Edit the section that reads:
Timeout 120 to a more reasonable value like the following:
Timeout 20
Save this file by pressing the escape key followed by :wq! which will save the file and exit vi.
Restart Apache to apply the changes:
/etc/init.d/httpd restart
Max Client Settings
On (dv) Dedicated-Virtual v2.0 Servers:
First backup the file with the following command:
cp /etc/httpd/conf/httpd.conf /etc/httpd/conf/httpd.bkup.kb-246.2
The following command opens httpd.conf and searches for MaxClients:
vi +/MaxClients /etc/httpd/conf/httpd.conf You should see the following section marked prefork MPM.
Edit the section that reads:
<IfModule prefork.c>
StartServers 2
MinSpareServers 1
MaxSpareServers 5
MaxClients 10
MaxRequestsPerChild 1000
</IfModule>
to something more like this:
For Base servers:
<IfModule prefork.c>
StartServers 1
MinSpareServers 1
MaxSpareServers 3
MaxClients 50
MaxRequestsPerChild 1000
</IfModule>
For Rage servers:
<IfModule prefork.c>
StartServers 2
MinSpareServers 2
MaxSpareServers 5
MaxClients 100
MaxRequestsPerChild 1000
</IfModule>
For Extreme servers:
<IfModule prefork.c>
StartServers 2
MinSpareServers 2
MaxSpareServers 5
MaxClients 200
MaxRequestsPerChild 1000
</IfModule>
Save this file and restart Apache to apply the changes:
/etc/init.d/httpd restart
On (dv) Dedicated-Virtual v3.x Servers:
First backup the file with the following command:
cp /etc/httpd/conf/httpd.conf /etc/httpd/conf/httpd.bkup.kb-246.2
The following command opens httpd.conf and searches for MaxClients:
vi +/MaxClients /etc/httpd/conf/httpd.conf You should see the following section marked prefork MPM.
Edit the section that reads:
<IfModule prefork.c>
StartServers 1
MinSpareServers 1
MaxSpareServers 20
ServerLimit 20
MaxClients 150
MaxRequestsPerChild 4000
</IfModule>
to something more like this:
For Base servers:
<IfModule prefork.c>
StartServers 1
MinSpareServers 1
MaxSpareServers 3
ServerLimit 50
MaxClients 50
MaxRequestsPerChild 4000
</IfModule>
For Rage servers:
<IfModule prefork.c>
StartServers 2
MinSpareServers 2
MaxSpareServers 5
ServerLimit 100
MaxClients 100
MaxRequestsPerChild 4000
</IfModule>
For Extreme servers:
<IfModule prefork.c>
StartServers 2
MinSpareServers 2
MaxSpareServers 5
ServerLimit 200
MaxClients 200
MaxRequestsPerChild 4000
</IfModule>
For Nitro servers:
<IfModule prefork.c>
StartServers 20
MinSpareServers 20
MaxSpareServers 50
ServerLimit 500
MaxClients 500
MaxRequestsPerChild 4000
</IfModule>
Save this file and restart Apache to apply the changes:
/etc/init.d/httpd restart
NOTE:
If you are running into frequent Apache crashes you can check the error_log for MaxClients-related problems.
To check your error logs to see if you have MaxClient issues you can run the following command as root:
grep -i maxclient /var/log/httpd/error_log* If this command returns any results after making the above changes you may need to fine-tune the MaxClients variables further.
Apache Timeout setting
The timeout setting is the number of seconds before data "sends" or "receives" (to or from the client) time out. Having this set to a high number forces site visitors to "wait in line" which adds extra load to the server.
First backup the file with the following command:
cp /etc/httpd/conf/httpd.conf /etc/httpd/conf/httpd.bkup.kb-246.1
The following command opens httpd.conf and searches for the term Timeout:
vi +/Timeout /etc/httpd/conf/httpd.conf You should see the following lines:
# Timeout: The number of seconds before receives and sends time out.
Timeout 120
Edit the section that reads:
Timeout 120 to a more reasonable value like the following:
Timeout 20
Save this file by pressing the escape key followed by :wq! which will save the file and exit vi.
Restart Apache to apply the changes:
/etc/init.d/httpd restart
Max Client Settings
On (dv) Dedicated-Virtual v2.0 Servers:
First backup the file with the following command:
cp /etc/httpd/conf/httpd.conf /etc/httpd/conf/httpd.bkup.kb-246.2
The following command opens httpd.conf and searches for MaxClients:
vi +/MaxClients /etc/httpd/conf/httpd.conf You should see the following section marked prefork MPM.
Edit the section that reads:
<IfModule prefork.c>
StartServers 2
MinSpareServers 1
MaxSpareServers 5
MaxClients 10
MaxRequestsPerChild 1000
</IfModule>
to something more like this:
For Base servers:
<IfModule prefork.c>
StartServers 1
MinSpareServers 1
MaxSpareServers 3
MaxClients 50
MaxRequestsPerChild 1000
</IfModule>
For Rage servers:
<IfModule prefork.c>
StartServers 2
MinSpareServers 2
MaxSpareServers 5
MaxClients 100
MaxRequestsPerChild 1000
</IfModule>
For Extreme servers:
<IfModule prefork.c>
StartServers 2
MinSpareServers 2
MaxSpareServers 5
MaxClients 200
MaxRequestsPerChild 1000
</IfModule>
Save this file and restart Apache to apply the changes:
/etc/init.d/httpd restart
On (dv) Dedicated-Virtual v3.x Servers:
First backup the file with the following command:
cp /etc/httpd/conf/httpd.conf /etc/httpd/conf/httpd.bkup.kb-246.2
The following command opens httpd.conf and searches for MaxClients:
vi +/MaxClients /etc/httpd/conf/httpd.conf You should see the following section marked prefork MPM.
Edit the section that reads:
<IfModule prefork.c>
StartServers 1
MinSpareServers 1
MaxSpareServers 20
ServerLimit 20
MaxClients 150
MaxRequestsPerChild 4000
</IfModule>
to something more like this:
For Base servers:
<IfModule prefork.c>
StartServers 1
MinSpareServers 1
MaxSpareServers 3
ServerLimit 50
MaxClients 50
MaxRequestsPerChild 4000
</IfModule>
For Rage servers:
<IfModule prefork.c>
StartServers 2
MinSpareServers 2
MaxSpareServers 5
ServerLimit 100
MaxClients 100
MaxRequestsPerChild 4000
</IfModule>
For Extreme servers:
<IfModule prefork.c>
StartServers 2
MinSpareServers 2
MaxSpareServers 5
ServerLimit 200
MaxClients 200
MaxRequestsPerChild 4000
</IfModule>
For Nitro servers:
<IfModule prefork.c>
StartServers 20
MinSpareServers 20
MaxSpareServers 50
ServerLimit 500
MaxClients 500
MaxRequestsPerChild 4000
</IfModule>
Save this file and restart Apache to apply the changes:
/etc/init.d/httpd restart
NOTE:
If you are running into frequent Apache crashes you can check the error_log for MaxClients-related problems.
To check your error logs to see if you have MaxClient issues you can run the following command as root:
grep -i maxclient /var/log/httpd/error_log* If this command returns any results after making the above changes you may need to fine-tune the MaxClients variables further.