Bug 862839

Description of problem:
In 64-bit platforms (e.g., x86_64), Python needs more memory than on 32-bit (e.g., i386) platforms.  In the context of RHN, the memory mod_python consumes in turn affects Apache (httpd), whose child processes may grow too big resulting in termination when they're over the SizeLimit.  This causes no functionality loss, but will have a performance impact.  Hence it's better to not limit httpd processes by size, instead, limit the number of requests. 

Version-Release number of selected component (if applicable):
N/A

How reproducible:
Everytime

Steps to Reproduce:
N/A
  
Actual results:
HTTP requests occupy most of the physical ram, causing a decrease in performance

Expected results:
Performance increase

Additional info:
The description of the problem for a RHN Satellite was taken from, https://access.redhat.com/knowledge/solutions/16546

The resolution for this problem for a RHN Satellite is to (should be relatively the same for RHN): 

Comment out the following lines in /etc/rhn/satellite-httpd/conf/startup.pl:

use Apache2::SizeLimit;
$Apache2::SizeLimit::MAX_PROCESS_SIZE = 400_000;  # 400,000 kbytes, ie, 400 meg
$Apache2::SizeLimit::CHECK_EVERY_N_REQUESTS = 1;

Then, set the following line in  /etc/rhn/satellite-httpd/conf/httpd.conf to:

<IfModule prefork.c>
...
MaxRequestsPerChild  200
...
</ifmodule>

After saving both files, restart the Satellite httpd service:

service satellite-httpd restart



This problem was reported in Remedy ticket INC000000574384