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Forum Discussion

AICadmin_2415's avatar
AICadmin_2415
Icon for Nimbostratus rankNimbostratus
Nov 18, 2016
Solved

My LTM VE is running 2 TMM's but why? How do I determine what each TMM is for?

We have a 200 Mbps license for our LTM VE appliance. Occasionally we are exceeding our bandwidth limit and after some research I found the total bandwidth available is divided by the number of TMM's ...
application delivery
LTM
TMOS
  • M_Quevedo_64392's avatar
    M_Quevedo_64392
    Nov 19, 2016

    Each TMM (Traffic Management Microkernel) instance uses one vCPU so the BIG-IP can do more work by running two vCPU's in parallel. By default half of the connections are "disaggregated" to each TMM. This is a statistical multiplexing process. When there are many connections, system utilization will be balanced. If you have just one very busy connection then it may dominate the activity of the TMM handling it.

     

Kishore_Kumar_2's avatar
Kishore_Kumar_2
Icon for Cirrus rankCirrus
Nov 19, 2016

First of all, the LTM Or any other resources mentioned in the Resource provisioning tab are the modules or functional types that the BigIP can work as.

 

TMM is the traffic management (microkernel?), it is the brains of the BigIP. It takes up the traffic and manipulates it according to our configuration.

 

The multiple TMMs is because the box has multiple cluster processing that helps traffic processing

 

https://support.f5.com/kb/en-us/solutions/public/14000/300/sol14358.html