Forum Discussion
NimbostratusNo memory allocated to TMM processes other than TMM0.0
I'm running 11.6.3 HF-Engineering hotfix and I'm wondering if I'm running into a bug. The output below is for a 4000 with LTM and ASM provisioned.
I only see memory allocated to TMM0.0. I see no memory allocated to TMM0.2, TMM0.4 or TMM0.6. Shouldn't I see memory allocated to all of the TMM processes?
show /sys tmm-info
Sys::TMM: 0.0
Global TMM Process Id 16639 Running TMM Id 0 TMM Count 1 CPU Id 0
Memory (bytes)
Available 6.1G Used 521.4M
CPU Usage Ratio (%) Last 5 Seconds 2.55 Last 1 Minute 2.46 Last 5 Minutes 2.76
Sys::TMM: 0.2
Global TMM Process Id 16639 Running TMM Id 1 TMM Count 1 CPU Id 2
Memory (bytes)
Available 0 Used 0
CPU Usage Ratio (%) Last 5 Seconds 2.31 Last 1 Minute 2.31 Last 5 Minutes 2.63
Sys::TMM: 0.4
Global TMM Process Id 16639 Running TMM Id 2 TMM Count 1 CPU Id 4
Memory (bytes)
Available 0 Used 0
CPU Usage Ratio (%) Last 5 Seconds 2.64 Last 1 Minute 2.48 Last 5 Minutes 2.78
Sys::TMM: 0.6
Global TMM Process Id 16639 Running TMM Id 3 TMM Count 1 CPU Id 6
Memory (bytes)
Available 0 Used 0
CPU Usage Ratio (%) Last 5 Seconds 2.54 Last 1 Minute 2.93 Last 5 Minutes 2.82
4 Replies
amolariCirrostratus
I see the same on my Viprion running 11.6 HF4. I would say it's a bad behaviour but apparently (still) not seen by F5 as a bug (cannot find anything related on AskF5)- Hannes_Rapp
Either a bug, or perhaps someone intentionally configured the system to use a single TMM processor? Some severe system issues can be resolved by configuring the system to use a single TMM instance...
Could you please paste the output for command
, as well as fortmsh list sys db provision.tmmcount
?tmsh list sys db provision.tmmcountactual 
Krypto50_190970The answer I received from F5 support is that this is expected behavior. With CMP, TMM is now a single process with multiple threads. All memory is allocated to the TMM process which manages the memory for the different threads. I'm still unclear on why the memory shows up under TMM0.0. I don't have access to the system right now but here is what I can get from the qkview file.
list /sys db all-properties
sys db provision.tmmcount { default-value "0" scf-config "false" value "0" value-range "integer min:0 max:1024" } sys db provision.tmmcountactual { default-value "0" scf-config "false" value "4" value-range "integer min:0 max:1024" }
- Hannes_RappIn case of vCMP, it makes sense, but do you have any vCMP Guests configured? For example, I have an F5 appliance (5250v) that has 8 vCMP Guests. When issuing the 'tmsh show sys tmm-info' command on any of the Guests systems, or the vCMP Host itself, I only see one TMM instance, even on the guests that are configured to use up 2 cores instead of 1. In case you have vCMP configuration in place, seeing the provisions only on TMM0.x is as expected - nothing to worry about. If you don't have any vCMP configuration in place, you do have something to be concerned about. Perhaps this arcticle will help you: https://support.f5.com/kb/en-us/products/big-ip_ltm/manuals/product/vcmp-administration-appliances-11-5-0/1.html. Cheers!
