Bug ID 760475: Apache spawns more processes than the configured limit, causing system low memory condition

Last Modified: Jul 12, 2023

Affected Product(s):
BIG-IP All(all modules)

Known Affected Versions:
14.1.0,,,,,, 14.1.2

Fixed In:

Opened: Mar 05, 2019

Severity: 2-Critical


Apache (httpd) process count MaxClients on BIG-IP systems is set to '10' in the configuration. When more requests are received, Apache spawns more processes than 10, consuming more memory.


System low memory condition can severely impact application/system performance, and sometimes triggers Out-Of-Memory (OOM) Killer, so critical applications might be terminated.


Numerous clients trying to connect simultaneously to the BIG-IP GUI.


Complete the following procedure: 1. Modify /etc/httpd/conf/httpd.conf to have the following configuration outside of the prefork module (global): MaxClients 10 2. Run the following command: bigstart restart httpd

Fix Information


Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips