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server reached MaxClients setting, consider raising the MaxClients setting

I am running RedHat version 2
running on Linux veriosn : Linux otppweb-lin-15 2.4.21-20.ELsmp #1 SMP Wed Aug 18 20:46:40 EDT 2004 i686 i686 i386 GNU/Linux

My Apache server goes up and down very frequently. When i checked the Logs it says :

[Wed Apr 20 23:24:14 2005] [error] server reached MaxClients setting, consider raising the MaxClients setting
[Wed Apr 20 23:26:05 2005] [error] server reached MaxClients setting, consider raising the MaxClients setting


So Restart Apache by increasing the MaxClient then it works Fine. After the restart whenever a new request comes it again reaches the
Maxclient to the limit and gives similar Message in the error_log and Apache Goes down.

I rebuild apache again but the samething is happening again and again. I know Kernel and Apache concerns no where but just to inform the list abt it.

Any Help would be appreciated.

Regards
Om
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osingh
Asked:
osingh
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1 Solution
 
ramazanyichCommented:
First of all you should try to understand what is the load of your server by using mod_status.
Second you should check access.log file to see that you are not attacked by some one and try to disable access to that IP address (or address range)
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osinghAuthor Commented:
Hi,

Thanks for your response.

We have confirmed that there was no attack on our website during that time.

We are expecting a maximum of 3000 concurrent user on our website, and we have 3 web server , each running 3 pairs of ssl and non ssl instances of apache.The server has only 4 GB of RAM. What value of MaxClient user will be good enough to handle this load?

All help will be appretiated.

Regards
Om

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ramazanyichCommented:
check http://modperlbook.org/html/ch11_01.html . on that URL you will find some calculations for maxclients based on amount of memory which do you have.
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