Mar 27, 2026 - For details about updated CVE-2025-53521 (BIG-IP APM vulnerability), refer to K000156741.

Forum Discussion

Aditya_Mehra's avatar
Aditya_Mehra
Icon for Cirrus rankCirrus
Jul 11, 2017

Relation between CPU , core and TMM

I have a doubt between CPU , core and TMM. I read that CMP feature allows platforms that contain multiple CPUs to run a single TMM process for every CPU, and multiple TMM threads per processing core....
application delivery
big-ip
core
cpu
security
tmm
TMOS
JRahm's avatar
JRahm
Icon for Admin rankAdmin
Jul 11, 2017

For your blade, the single deca-core processor has 10 cores, 1 TMM process, and 10 TMM instances by default.

ps T | grep tmm | grep T
will show you the TMM processes

tmsh show sys tmm-info | grep Sys::TMM
will show you the TMM instances

So by default in a single guest configuration, your BIG-IP will have 10 TMM instances to manage your traffic, and the disaggregator uses a CMP hash to distribute traffic to them.

I filmed a lightboard lesson on this topic, I hope you enjoy it!