Bug ID 421570: Memory stats now adjusted for internal buffers and caches consistently

Last Modified: Oct 06, 2020

Bug Tracker

Affected Product:  See more info
BIG-IP All(all modules)

Fixed In:

Opened: May 21, 2013
Severity: 3-Major


The internal memory used for OS buffers and caches was not properly factored into memory use statistics. Further, memory use statistics were not consistent across TMSH, TMUI and the Dashboard.


This caused the estimate of remaining available resources on the BIG-IP to be off, leading to inefficient provisioning or overall utilization.




The memory adjusted for buffers and cache is available using the Linux "free" command.

Fix Information

Buffers and caches are now properly reflected as free memory since they are generally available for use by other processes. The memory stats across BIG-IP management interfaces are now consistent.

Behavior Change

changed how memory is reported in the dashboard, performance graphs, gui, tmsh, snmp