F5 BIG IP memory issues

Hi Friends,

I am facing some memory related issues in my vCMP guest. It looks like BIG IP is dropping some connections and i believe it is because of tm.tcpmemorypressure db keys.

[root@F5_Prod:/S1-green-P:Active:In Sync] log  tmctl -d blade tmm/tcp4 -s mem_packets_dropped
mem_packets_dropped
-------------------
           20853196
           20703315

[root@F5_Prod:/S1-green-P:Active:In Sync] log  tmsh list sys db tm.tcpmemorypressure*
sys db tm.tcpmemorypressure {
    value "enable"
}
sys db tm.tcpmemorypressure.hiwater {
    value "90"
}
sys db tm.tcpmemorypressure.lowater {
    value "80"
}


[root@F5_Prod:/S1-green-P:Active:In Sync] log  tmctl -d blade tmm/pagemem
name       used   avail
------- ------- -------
pagemem 1069034 1347584

As per the above command, we are using 79% of the memory allocated to tmm.

But as per the below command, we are using just above 50%. Which one is right?

[root@F5_Prod:/S1-green-P:Active:In Sync] log  tmsh show sys memory

Sys::System Memory Information
------------------------------------------------------------------
Memory Used(bytes)  Current  Average  Max(since 04/18/16 08:51:57)
------------------------------------------------------------------
Total Phys Memory     11.1G    11.1G                         11.1G
OS Used Memory        11.0G    11.0G                         11.0G
TMM Alloc Memory       5.1G     5.1G                          5.1G
TMM Used Memory        2.4G     2.4G                          2.4G
OS Used Swap          44.0K    44.0K                         44.0K

------------------------
Sys::Host Memory (bytes)
------------------------
Host: 1
  Available  11.1G
  Used       11.0G

• Jinshu